This is a partial fix for issue #3737. It only addresses the SIGHUP
aspect of the problem. Fixing SIGTERM is TBD.
(cherry picked from commit 31adc221d9)
* Added new function for the default prompt mode
Now fish mode prompt will call fish_default_mode_prompt, this will solve #3641
* Added function description
* Change wording for documentation about default mode prompt
* Finish changes requested in code review
If the tty has been closed (i.e., become invalid) the `ttyname()`
function will return NULL. Passing that NULL to `strstr()` can crash
fish which means it won't kill its child processes and exit cleanly.
Another fix for #3644
mkostemp is not available on some older versions of macOS. In order
for our built binaries to run on them, mkostemp must be weak-linked.
On other systems, we use the autoconf check.
Introduce a function fish_mkstemp_cloexec which uses mkostemp if
it was detected and is available at runtime, else falls back to
mkstemp. This isolates some logic that is currently duplicated in
two places.
See #3138 for more on weak linking.
In order to use C++11 with the standard macOS Xcode toolset,
we must use libc++. This in turn requires using 10.7 as our
MIN_REQUIRED in the availability macros, which in turn marks
certain wide-character functions as strong symbols (since they
were introduced in 10.7).
Redeclare them as weak, so that we can run on 10.6 without link
errors. See #3138 for more.
GNU systems don't allow mixing narrow and wide IO, so some of these
messages were lost since 1621fa43d8.
stderr is also the more logical place for error output to end up.
Fixes#3704.
Emitting warnings about EPIPE errors when writing to stdout or stderr is
more annoying than helpful. So suppress that specific warning message.
Fixes#2516
A third-party plugin noticed that using `$CMD_DURATION` in the prompt
causes problems when combined with the recent changes to tighten up
parsing of strings meant to be integer values. This fixes the problem by
ensuring the var is defined before the first interactive command is run.
See https://github.com/fisherman/dartfish/issues/7
It was pointed out that the previous change to alert people to the fact
their completion scripts were using flags that are no longer valid
resulted in way too many warnings. This limits the warning to one per
session.
Fixes#3640
On some platforms, notably GNU libc, you cannot mix narrow and wide
stdio functions on a stream like stdout or stderr. Doing so will drop
the output of one or the other. This change makes all output to the
stderr stream consistently use the wide forms.
This change also converts some fprintf(stderr,...) calls to debug()
calls where appropriate.
Fixes#3692
Another dev pointed out my previous attempt to resolve issue #3612 did
not do a good job of clarifying the matter. Hopefully this change is
better at explaining why autoloading is not applicable to aliases.
* Add italics and dim modifier to set_color
* update documentation for set_color
* add reverse mode to set_color
* Use standout mode as fallback for reverse mode
* Apply patch from @Darkshadow2 adding additional modes
This would fail on very long numbers, e.g.
`math "1 + 1233242342353453463458972349873489273984873289472914712894791824712941"`
would now return "42", where it previously returned the correct "1233242342353453463458972349873489273984873289472914712894791824712942".
This reverts commit 26e781ef5a.
It's not the case that macOS and old BC doesn't respect this environment
variable, just that they don't have special behavior when it's set to 0.
However, there is rather universal favorable behavior with a value of 2.
Output is of the form:
\
999999999999999999999999999999999...
with the second line being arbitrarily long. So just grab that line
instead of stitching with `string`.
This can yield a 25-30% speedup.
This commit adds a feature that after typing "git add" and pressing
"alt+h", the manpage for "git-add" instead of "git" would be displayed.
The new logic takes the first argument which doesn't start with a dash
and tries to display manpage for "command-argument"; it falls back to
"man command" it the first try doesn't succeed.
Fixes#3618.
* Only append paths if `MANPATH` is already set, to match behavior of macOS
`path_helper` utility.
* Use the same technique as is used above to set PATH from /etc/paths and
/etc/paths.d/*.
I noticed that universal variable tests were failing on Cygwin and
Dragonfly BSD. The failures were because we are attempting to verify the
correct behavior of mechanisms that are known to be broken on those
platforms. There are still uvar test failures on those platforms with
this change but they are due to actual problems rather than bugs in the
tests.
Fixes#3587
Trailing whitespace on a `\fish` command was causing this build failure:
/private/var/folders/T/fish_doc_build_3RT8yS/random.doxygen:44:
warning: found </pre> tag without matching <pre>
Using `\e` is clearer and shorter than `\x1b`. It's also consistent with how
we write related control chars; e.g., we don't write `\x0a` we write '\n'.
Update our implementation of the PROMPT_SP heuristic to match current
zsh behavior. This makes it behave better on terminals like ConEmu and
the native MS Windows console which automatically insert a newline when
writing to the last column of the line.
Fixes#789
There are several places that use writestr() which should instead be
using fwprintf() or equivalent. Also, clarify the documentation for why
writestr() and writechr() exist so they aren't used inappropriately
again.
Fixes#3657
- Support completing dynamic make targets.
- Support completing make targets when using -C/--directory.
- Support `-Cdir/path`, `-C dir/path`
- Support `--directory=dir/path`, `--directory dir/path`
This detects if the make command have the `-p` switch otherwise it
assumes it is BSD make and will run a different command to try to figure
out the available targets.
Commits 48aa92900 and 77d4d21ca each added two files with the same name
differing only in letter case. That causes problems on systems like
macOS and MS Windows. Remove the lowercase file names. Anyone needing
those completions can do (same for VBoxHeadless):
function vboxsdl --wraps VBoxSDL
VBoxSDL $argv
end
The previous implementation didn't take into account that a lexer could
have multiple names and gave `cpp, c++` instead of `cpp` and `c++` when
completing `pygmentize -l c`.
--authoritative and --unauthoritative 'complete' builtin switches have no effect anymore.
This commit removes usage of --unautoritative/-u in completions.
--authoritative and --unauthoritative 'complete' builtin switches have no effect anymore.
This commit removes usage of --autoritative/-A in completions.
The complete builtin had once -A / --authoritative and -u /
--unauthoritative switches which indicated whether all possibilities for
completion are specified and would cause an error if the completion was
authoritative and an unknown option was encountered.
This feature was functionally removed during one of the past parser
rewritings, but -A and -u still remained in parts of the code and
command completions, although having no effect.
This commit removes the leftovers and prints an warning whenever user
tries to run the complete command with -A / -u / --authoritative /
--unauthoritative switches.
Fixes#3640.
Commit 8d27f81a to change how background jobs are handled (killed rather
than left running) when the shell is exited did not correctly handle
the nested interactive context created by the `breakpoint` command. This
fixes that mistake. Now any background jobs that already existed, or were
created within the `breakpoint` context, are left running when exiting
that context.
Fish is not consistent with other shells like bash and zsh when exiting
an interactive shell with background jobs. While it is true that fish
explicitly claims no compatibility with POSIX 1003.1 this is an area
where deviation from the established practice adds negative value.
The reason for the current behavior seems to be due to two users who did
not understand why interactive shells managed background jobs as they
did and were not aware of tools like `nohup` or `disown`. See issue
There is also a fairly significant bug present due to a misunderstanding of
what a true value from `reader_exit_forced()` means. This change corrects
that misunderstanding.
Fixes#3497
The recent discussion around allowing the user to change various termios
(i.e., stty) settings reminded me that there are places in our code
where we assume the interrupt key is [ctrl-C]. That's a bad assumption.
Instead use the actual value reported to us by the kernel.
This also makes the fkr program friendlier by always reporting when a
signal was received, not just when run with -d2, and prompting the user
to press the INTR or EOF key a second time to exit.
The recent refactoring to separate default (emacs) from vi key bindings
overlooked adding `\cH` bindings to vi mode. This also fixes the
behavior of the [del] key bindings (\x7F).
Fixes#3653
If acquiring a lock on the history or uvar file takes more than 250 ms
disable locking of the file. On systems with broken remote file system
locking it can cause tens of seconds delay after running each command
which can make the shell borderline unusable.
This also changes history file locking to use flock() rather than
fcntl() to be consistent with uvar file locking. It also implements the
250 ms time limit before giving up on locking.
Fixes#685
If an interactive shell has its tty invalidated attempts to write to
stdout or stderr can trigger this bug:
https://sourceware.org/bugzilla/show_bug.cgi?id=20632
Avoid that by reopening the stdio streams on /dev/null if we're getting
an ENOTTY error when trying to do things like give or take ownership of
the tty.
This includes some unrelated style cleanups but including them seems
reasonable.
Fixes#3644
This implements a standard function and bindings for editing the command
line in an external editor. This feature has been requested multiple
times in the past year with various solutions cut and pasted into those
issues. This change combines the best aspects of those solutions.
Fixes#1215
There were two places in the code that used the anti-pattern of
returning True on success else an error message. In python you should
always be able to replace `if x == True:` with just `if x:`. Which is
what the lint tool recommended. Unfortunately I didn't notice how the
return value was being used. This fixes that by changing the two
affected functions to return an error message or None on success.
This also adds `from __future__ import print_function` since the code
uses the `print(msg)` function form rather than the `print msg`
statement form. The former works by accident on python2 because the
parens are interpreted as creating parenthesized expression that
devolves to the single string inside the parens. So while the future
import isn't strictly speaking necessary it will help avoid mistakes in
the future if more complex `print()` calls are added.
Partial fix for #3620
`abbr` used to take a single argument and split in on the first space,
but 309e10e7 and predecessors altered this behaviour. Update the web
config use of abbr to the newer format.
Fixes#3620.
I had disabled having `make style-all` restyling fish scripts because a
majority of them did not conform to the style enforced by `fish_indent`.
I recently restyled most of the fish scripts with the exception of the
completion scripts. So this re-enables restyling all scripts with the
exception of completion scripts.
When I refactored the code to reduce redundancy and improve the error
messages when the config or data directories could not be used I botched
the customization of the $HOME based data path.
min_width dates back to the original full-screen pager.
After some careful inspection, the code path that uses min_width
is never executed and so the min_width machinery is useless.
Let's remove it!
Tests that exercise error paths may result in output to
stderr. This may make it look like the test failed when it did
not. Introduce should_suppress_stderr_for_tests() to suppress
this output so the test output looks clean.
This commit fixes a bug which causes that
fish -c ')'; echo $status
("Illegal command name" error) returns 0. This is inconsistent with
e.g. when trying to run non-existent command:
fish -c 'invalid-command'; echo $status
("Unknown command" error) which correctly returns 127.
A new status code,
STATUS_ILLEGAL_CMD = 123
is introduced - which is returned whenever the 'Illegal command name *'
message is printed.
This commit also adds a test which checks if valid commands return 0,
while commands with illegal name return status code 123.
Fixes#3606.
This fixes a problem with non-threadsafe errno.
Ideally, this would be the use of the AX_PTHREAD macro, but it is GPL 3+
only, which is incompatible with the GPL 2 license of fish. It also
would need extending to cover C++.
For now, fish doesn't build on anything except GCC under Solaris anyway,
so `-pthread` is the right thing to use.
Work on #3340.
Without `-pthread` specified to the compiler, errno is not threadsafe on
Solaris (as _REENTRANT is undefined, and _POSIX_C_SOURCE may not be set
until after the inclusion of <errno.h>).
Work on #3340.
On Solaris, some standard wide character functions are only contained in
the std:: namespace. The configure script now checks for these, enabling
the appropriate `uses` statements in src/common.h.
The checks are handwritten, because Autoconf's AC_CHECK_FUNC macro
always uses C linkage, but the problem only appears under C++ linkage.
Work on #3340.
This is normally handled by the build_documentation.sh script, but if
the tarball includes the documentation then that script is never run.
We should do it in both places as the Xcode build uses only the
build_documentation.sh script!
Fixes#2561.
The autoreconf step requires a newer version of automake than is
available on older versions of Debian and Ubuntu; avoid the autoreconf
step on these platforms for now.
This change increases the amount of useful information when fish is
unable to create or use its config or data directory. We now make it
clear when neither var is set or one is set to an unusable location.
Fixes#3545
After 'x' is used to delete a character at the end of a line the cursor
should be repositioned at the last character, i.e. repeatedly pressing
'x' in normal mode should delete the entire string.
The abbr function doesn't have the possiblity to rename abbreviations.
You have to delete the old one and create a new one. This commit adds
this functionality and uses the syntax:
abbr -r OLD_KEY NEW_KEY
Fixes#2155.
A couple things went wrong with `env -u HOME USER=x ./fish -c ''`
We failed to check that `pw` isn't NULL leading to a crash when USER is
bogus. After fixing that we were not left with both variables in a
correct state still.
We now go back and force fish to dig up a working USER when we notice
this and then get both set successfully. Fixes#3599
I hate doing this but I am tired of touching a fish script as part of
some change and having `make style` radically change it. Which makes
editing fish scripts more painful than it needs to be. It is time to do
a wholesale reformatting of these scripts to conform to the documented
style as implemented by the `fish_indent` program.
This augments the previous change for issue #3346 by adding an error
message when an invalid integer is seen. This change is likely to be
controversial so I'm not going to squash it into the previous change.
The `test` builtin currently has unexpected behavior with respect to
expressions such as `'' -eq 0`. That currently evaluates to true with a
return status of zero. This change addresses that oddity while also
ensuring that other unusual strings (e.g., numbers with leading and
trailing whitespace) are handled consistently.
Fixes#3346
Only in one instance would test as `[` have the the errors formatted
as "[: foo". This fixes that. When trying to track down the source of
an error this could lead someone astray.
make clean was outputting misleading messages due to our
recursive invocation of make in the pcre directory, even if
that directory has no Makefile. This can easily come about if
the ./configure script determines we have a system installed PCRE.
This change simply checks for the presence of the Makefile in
the PCRE directory before invoking recursive make, for the clean
and distclean targets.
Fixes#3586
This might be a bit over the top, but getting the information that a default priority threshold is used without knowing what that value is or how to find out might not be so useful after all. Thus, change the completion to include this information dynamically.
Currently, the ./configure script generated by autotools will
test if the configure.ac script is newer than its output configure
script, and if so, run autoconf to rebuild it. However autoconf
is no longer sufficient because we have some m4 macros. So now
run autoreconf --no-recursive (per #3572)
This commit does a few things:
- Switches to C++11 as the language dialect
- Eliminates the Release_C++11 configuration (now C++11 is default)
- Switches to libc++ from libstdc++, since the libstdc++ that ships
with Xcode does not support C++11
The existing code is inconsistent, and in a couple of cases wrong, about
dealing with strings that are not valid ints. For example, there are
locations that call wcstol() and check errno without first setting errno
to zero. Normalize the code to a consistent pattern. This is mostly to
deal with inconsistencies between BSD, GNU, and other UNIXes.
This does make some syntax more liberal. For example `echo $PATH[1 .. 3]`
is now valid due to uniformly allowing leading and trailing whitespace
around numbers. Whereas prior to this change you would get a "Invalid
index value" error. Contrast this with `echo $PATH[ 1.. 3 ]` which was
valid and still is.
Some key bindings were updated in fish 2.4.0 but in some cases the
documentation does not correctly reflect the actual behavior. This
commit attempts to fix that.
Builtin commands that validate var names should use a consistent
mechanism. I noticed that builtin_read() had it's own custom code that
differed slightly from wcsvarname().
Fixes#3569
My previous change removed one place where is_wchar_ucs2() was used and
replaced it with compile time tests. This change does the same for the
other uses.
On Cygwin there are two narrowing conversions at line 931 in
src/fish_tests.cpp due to the code assuming a wchar_t is four bytes.
Obviously that's wrong but only became an issue with the pending change to
switch to C++11. The problematic values aren't actually used on Windows
because the tests that would use them are bypassed if is_wchar_ucs2()
returns true. This change predicates that code on a compile time rather
than a run time test.
The last commit to this auto completion changed it to use `string replace` instead of `tr`. Unfortunately they do not behave the same. `tr " = " "\t"` replaces " = " with a tabulator character, while `string replace -a " = " "\t"` replaces it with \t. Either `string` is misbehaving or this auto completion was broken.
We cannot just use TERM = xterm and defined Ss sequence, as some old
vte-based terminals are still in the wild that don't support the
sequence and don't have $VTE_VERSION set.
I have tested this on
- konsole - supported and works ($KONSOLE_PROFILE_NAME)
- new xterm - supported and works ($XTERM_VERSION)
- lxterminal-gtk3 - supported and works ($VTE_VERSION)
- new gnome-terminal - supported and works ($VTE_VERSION)
- lxterminal-gtk2 - not supported and deactivated (no $VTE_VERSION)
- tmux in konsole - works
- tmux in lxterminal-gtk2 - deactivated
and for all supported ones with the respective variable erased, to see
that it is deactivated.
Fixes#3499.
* add completions for mkvextract
* fix edge cases with option placement in mkvextract.fish
* improve resiliency to errors in mkvextract.fish
* minor fixes in mkvextract.fish
There isn't a good reason to disallow an explicitly empty completion
description. Since I'm touching the code also modify the argument
parsing the match the style of most of the builtins.
Fixes#3557.
The changes related to issue #3068 removed most of the emacs bindings
from vi mode. However, since fish 2.4.0 was released several people have
pointed out that the directions for reinstating the legacy hybrid key
bindings don't work. This change fixes that and makes it easier to use
the legacy hybrid bindings.
Fixes#3556
This fixes some of the IWYU and cppcheck lint warnings. And only on
macOS (formerly OS X). Fixing these types of warnings on a broader set
of platforms should be done but this is a baby step to making `make
lint-all` have few, if any, warnings. This reduces the number of lines
in the `make lint-all` output on macOS by over 500 lines.
I found that after fixing the args to `cppcheck` it started reporting
lots of varFuncNullUB warnings. Suppress them as they should be safe to
ignore. Also, improve the readability of the script.
There was a discussion recently on Gitter about `set_color reset`. The
result was @floam creating commit bd03c3fbc to change it to `set_color
normal` in share/functions/vared.fish. This does the same for
tests/test_util.fish.
Switch from a linear to a binary search when looking for a matching
string in an enum map. Testing shows this is a little more than twice as
fast when searching for keywords in the sixteen entry keyword_map array.
This speedup doesn't matter much when searching for subbcommands but any
slow down in the parser is unacceptable.
I'm going to use the same mechanism elsewhere such as token_type_map
in src/parse_tree.cpp. But this change only affects the recently
introduce subcommand handling for the history and status commands.
Verified on Cygwin on MS Windows 7 when invoked as
`env LANG=zh_CN.GBK@cjknarrow fish`. No regression seen
when run on other systems with UTF-8 locales.
Fixes#3503
The `status` command currently silently allows incompatible flags (i.e.,
subcommands). Too, using flags to specify subcommands misleads the user
into thinking they can specify multiple subcommands.
We recently modified the `history` command to deprecate using flags for
subcommands. This change does the same for the `status` command.
Fixes#3509
Earlier lint cleanups overlooked a couple of modules because on macOS at
the moment oclint ignores them. I noticed this when I ran `make lint-all`
on Ubuntu.
SysBench is a modular, cross-platform and multi-threaded benchmark tool for
evaluating OS parameters that are important for a system running a database
under intensive load
The dpkg-reconfigure command is used on Debian and Ubuntu based systems to reconfigure packages.
According to the relevant manpage's the commited completion file should be complete.
Use $USER, prompt_hostname, string
Update to use correct color names such as magenta over purple.
Use bright color variants instead of bold in some cases.
Use $USER, prompt_hostname, string
Update to use correct color names such as magenta over purple.
Use bright color variants instead of bold in some cases.
Fixes display of version in documentation header. A shell-style variable
instead of a Makefile-style variable left it displayed as
ISH_BUILD_VERSION.
(cherry picked from commit 1e234f492c)
My earlier attempt with commit 851e449 to eliminate all the compiler
warnings about mixing signed and unsigned ints in an expression
introduced a subtle bug. This fixes that mistake.
Fixes#3488
(cherry picked from commit 075be74cc4)
My earlier attempt with commit 851e449 to eliminate all the compiler
warnings about mixing signed and unsigned ints in an expression
introduced a subtle bug. This fixes that mistake.
Fixes#3488
There was one block of code modified by commit 42458ff7 that had
convoluted, inverted, logic. In the process of collapsing nested
"if" blocks the logic was modified to avoid using "!" everywhere the
bool was tested. Unfortunately I neglected to modify two of the
conditions used to set that var to reflect the changed polarity.
This reverts commit dcb39af8c0.
It breaks building the documentation because splitting the sed invocation
in the `lexicon_filter` target from the preceding `if` block means the
`WORDBL` and `WORDBR` shell vars aren't available.
(cherry picked from commit 100a0ea549)
The fish_key_reader program was the only user of the
`set_wait_on_escape_ms()` function and that use was removed with commit
0461743. So remove it from the main fish code. This was found by `make
lint`.
This reverts commit dcb39af8c0.
It breaks building the documentation because splitting the sed invocation
in the `lexicon_filter` target from the preceding `if` block means the
`WORDBL` and `WORDBR` shell vars aren't available.
Regenerated with current autoconf tests for OS X El Capitan.
This avoids portability problems introduced with
8b9102d9fe and partially reverts that
commit.
Update the CHANGELOG to more accurately reflect what will be included in
the 2.4.0 release vis-a-vis the `history` command behavior.
I noticed that the compiler was emitting some harmless warnings related
to the history changes so deal with those as well.
This modifies the code path for `set PATH` and `set CDPATH` to emit an
easier to understand warning when an entry in those vars is invalid. For
example
$ set PATH $PATH /tmp/arglebargle
set: Warning: $PATH entry "/tmp/arglebargle": No such file or directory
$ mkdir /tmp/d
$ chmod 0 /tmp/d
$ set PATH $PATH /tmp/d
set: Warning: $PATH entry "/tmp/d": Permission denied
$ touch /tmp/x
$ set PATH $PATH /tmp/x
set: Warning: $PATH entry "/tmp/x": Not a directory
Fixes#3450
* Fix building on Android by avoiding getpwent() if missing with autoconf check
The getpwent() function does not link when building for Android,
and user names on that platform are not interesting anyway.
People regularly ask how to make abbreviations global (i.e., private to
a fish session) rather than universal. So explain how to do so in the
`abbr` man page.
Fixes#3446
While working on making the history command support case-sensitive and
insensitive searches I noticed that entering "all" when interactively
deleting history entries resulted in an error. That's because the
history builtin currently only supports `--exact` so we need to loop
over the matching entries and delete them one at a time.
Fixes#3448
Using a configure check for stat.st_ctime_nsec fixes building on
Android which has that field but does not define STAT_HAVE_NSEC.
Before this change the Android build failed on the st_ctim.tv_nsec
fallback #else clause.
Taking a different approach here. I can't see why we'd only want to
recognize certain colors. Now, we'll just try all the colors fish might
use.
This could probably be optimized now that there are more
than 8 (or 16) colors fish can do.
My previous change to avoid creating a *.pyc file when running
create_manpage_completions.py was wrong because I put the
`sys.dont_write_bytecode = True` on the wrong line. Rather than simply
move that statement make the simpler, cleaner, fix that removes the need
for `eval` where that program is invoked.
The Linux kernel only splits on the first whitespace in the shebang line
(unlike BSD which splits on all whitespace). Which means there can be
only one argument after the path to the program.
Producing man pages is done infrequently (basically just at `make test`
and `make install`) so there isn't any point in writing compiled
byte-code versions of the python modules.
This change causes our configure script to just use the default behavior
of autoconf: in practice it will try g++ instead of clang++ first.
There are good reasons to use the behavior this reverts, namely g++
might be a symlink to clang++ and clang++ is never a symlink to g++ -
when `configure` says using "g++" that doens't tell us much.
On more systems than not, as far as I can tell, clang++ will often be a
newer compiler than g++ from what I can see as well.
However, it appears we have some bad things happening with Cygwin on
clang.
Fixes#3435
It is believed there are no longer any platforms we support that do not
support passing NULL as the second argument to realpath(). So rather
than duplicating the logic to get reasonable behavior from our
wrealpath() wrapper simply remove the redundant implementation.
After implementing `builtin fish_realpath` it was noticed that it did
not behave like GNU `realpath` without options. Which is super annoying
since that was the whole point of implementing the command. Major
failure on my part since I wrote the unit tests to match the behavior of
the existing `wrealpath()` function that I simply exposed as a builtin
command. Rather than actually verifying it behaved in a manner
compatible with GNU realpath.
Also, while the decision to call the builtin `fish_realpath` seemed to
make sense at the time of the original commit further reflection has
shown that to be a silly, idiosyncratic, thing to have done. So rename
it to simply `realpath`.
Fixes 3400
For now don't restyle all the fish scripts. That's because there
are still problems with the `fish_indent` output that require manual
intervention. Not to mention that very few of the fish scripts even
conform to `fish_indent` output at this time.
It's the ninth color - on virtual consoles this was likely to
try a color that doesn't work because we checked if max_colors >= 8.
Add another way to reach that color on terminals with only 8 colors
by using bold mode to get a bright.
This has potential to fail by simply rendering as black which can cause
it to be invisible on a white-on-black terminal. Not bad as it's just
making this bell/whistle invisible:
We *really* want to set the omitted newline character apart by having
it appear grey. On (FreeBSD consoles, at least) VCs it's not uncommon
for it to render as a "?". It's particularly confusing if it doesn't
render in a darker color as it cannot be discerned from actual program
output.
When performing fuzzy completion, if a directory segment is
valid, then don't consider it for a fuzzy match even if
the literal match produces no results.
Fixes#3211
The use of wcstoimax causes certain out-of-range values
to be silently truncated (e.g. when converted to a pid),
and is incompatible with FreeBSD (see #626)
This reverts commit 6faa2f9866.
The template has different behavior around interpreting
non-decimal sequences. This doesn't seem to have been intended.
This reverts commit f843eb3d31.
Both GNU and BSD have bugs regarding the classification of
non-characters and private use area characters. Provide wrappers around
iswalnum(), iswalpha(), and isgraph() to provide a consistent
experience. We don't bother to autoconf the use of these wrappers for
several reasons. Including the fact that a binary built for one distro
release should behave correctly on another release (e.g., FreeBSD 10
does the right thing while FreeBSD 11 and 12 do not with respect to
iswalnum() of code points in the range 0xFDD0..0xFDFF).
Also move a few functions from common.* to wutil.* because they are wide
char specific and really belong in the latter module.
Fixes#3050
* Adds a template to parse integers easily.
It's not enough to use intmax_t and check for empty strings: there are
limits. Adds a template to make it easy to parse an integer of any type.
Adds a compiler flag to flag existing dangers.
* nix warning, include <limits>, fix namespace error.
on MacOS `xcodebuild -quiet` will flag these intmax_t -> * conversions,
just use that if you want to find them.
This adds a flag to the `history search` command to limit the number of
matching entries to the first "n". The default is unlimited. This is
mostly useful in conjunction with aliases (i.e., functions) that are
intended to report the "n" most recent matching history entries without
piping the result through the user's pager.
Fixes#3244
If one does a make fish; ./fish - don't use the make-installed paths.
Also, remove huge chunk of nearly duplicated code #ifdef'd __APPLE__
for relocatable dirs in fish.app: the directories under Resources
in the bundle followed by the changes I made around here a few months
ago now are not different enough that they require a special case.
This works fine for fish.app.
I was surprised fish_indent was running from /usr/local/bin
instead of the git checkout when I ran ./fish
after building fish there. This was more easily noticable after my last
commit. I added some debug lines which probably fish could have been
doing already when looking into that.
This is a pretty major thing during fish initialization, commit it for
everyone.
Don't wrap fish_indent at all if the version in $PATH matches
$FISH_VERSION.
When we do wrap it, resolve the path once, and use that via alias
machinery instead of doing an eval each time.
In both cases, `type fish_indent` can tell us what it's actually going
to do now.
clarity aside, it's faster if we only eval the one time.
eval is not only evil, but slow.
> for h in $history[1..100]; echo $h | fish_indent --no-indent; end
before: CMD_DURATION = 1005
if fish_indent is kosher in PATH: 549
if not, using alias: 687
these modern terminals both compose a nicer title if we don't try to provide a custom one (no path in title twice, "fish" in title twice) - and the user can configure which components they'd like in their terminal inside the terminal preferences.
Also make test "$VTE_VERSION" -ge .. work once I commit `test` strtoi
fix - the trick is to add a zero before it so the numeric comparison
works even if it's empty.
Fixes#107
This deprecates the use of long options for history sub-commands (e.g.,
`history --delete`) in favor of proper sub-commands (e.g., `history
delete`). It also eliminates the short options for those sub-commands.
Also change option processing to allow options anywhere on the command
line to match how the vast majority of fish builtins handle flags.
Replace --with-time with --show-time.
Fixes#3367
* Use 'grealpath' if installed for realpath fallback
See discussion in #3370
* fish_realpath: filter out dangerous options
Per feedback do not use aliases to declare wrapped functions.
Not sure why I crammed $(v) up like that with the parens. This is
a little sed job after regretting the Makefile seeming harder to read.
Certainly better.
We want clang or gcc picked for both C++/C
Few final cleanups - time to feed it to Travis.
chown completion chown currently uses cat /etc/group to fetch the list of group names. In Cygwin there's no /etc/group file any more (user and group names are fetched directly from the OS), so when a user tries to tab-complete the group name they get an error message:
ASchulma@LZ77E1AASCHULMA ~/d/fish> chown ASchulma🐱 /etc/group: No such file or directory
This change fixes that by using getent group (via __fish_complete_groups) by preference to get the group names, and falling back to /etc/group. This is more portable.
Teach autotools about clang++.
- Use AC macros for these utilities in Makefile:
LN_S, MKDIR_P, AWK, GREP, FGREP.
This has the effect on OS X with prefixed coreutils installed
from macports: > make show-LN_S show-MKDIR_P show-AWK show-GREP
LN_S = 'ln -s'
MKDIR_P = '/opt/local/bin/gmkdir -p'
AWK = 'awk'
GREP = '/opt/local/bin/grep'
FGREP = '/opt/local/bin/grep -F'
- Use GNU Make findstrings, wildcard,notdir,
- SHELL = @SHELL@ per reccomended practice and in line with
actual behavior.
- Add output for string wrangling steps
This has the same name and path as ubuntu's, but takes less arguments.
So we need to actually find if the distro thinks it is suse, and then
use it.
Fixes#3366.
Adds a color reset thing, to ensure fish tries to use hard colors during
testing.
Also, work on a discrepancy (not introduced by my changes, afaik) when
with some combinations of color settings, and usage of --bold, caused super
flakey color paninting in the pager. Downwards movements that trigger
scrolling vs. upwards movement in the pager would only apply bold to
selections when moving upwards. The bold state of the command completions in
the pager was flipping flops on and off, depending on if there is a description
on the preceding line.
Implement a lame fix by reseting the color to normal and applying a
different style on the rightmost ')' which seems to be what was influencing it.
Makes fish use terminfo for coloring the newline glich char.
Fixes various spots throughout fish where broken strtoi checks
were converting empty strings to zero. Zero is not a valid pid and
this was causing breakage as well when input.
Nix fish_wcstoi - wcstoimax does the same thing.
Improve comments and some general cleanup.
If an interactive job is started, and it is reaped within fish's
exit handler, we may attempt to print its status message after
cur_term has been set to NULL. This results in a crash.
This change makes fish only print the status message if cur_term is
not NULL.
Fixes#3222
Show the gist of what is going on during uninstall.
I had overlooked the uninstall target, with it mislabled as having
to do translations. Give make uninstall the full treatment here.
In addition to showing what is going on, give the user a 5^H7 second
warning before we blast away /usr/local/share/fish/ - it's not
unthinkable they might have a script or two in there.
Copied in manually - this won't be done automatically by autotools.
(we only use autoconf)
From automake NEWS:
New in 1.15:
* Improvements and refactorings in the install-sh script:
- It has been modernized, and now makes the following assumptions
*unconditionally*:
(1) a working 'dirname' program is available;
(2) the ${var:-value} shell parameters substitution works;
(3) the "set -f" and "set +f" shell commands work, and, respectively,
disable and enable shell globbing.
- The script implements stricter error checking, and now it complains
and bails out if any of the following expectations is not met:
(1) the options -d and -t are never used together;
(2) the argument passed to option -t is a directory;
(3) if there are two or more SOURCEFILE arguments, the
DESTINATION argument must be a directory.
This has gotten very out of sync with the project - autoupdate it and
integrate what autoscan found.
I checked with @zanchey - it looks like even our oldest RHEL 5 machines
have a new enough M4 to be able to handle what will be produced by
autoconf 2.68; also use a closer-to-modern version of that (2.69 was
released 2012!)
Neither m4 nor autoconf are required to build a fish release.
Update history docs.
Note - the omission of a mention of timezone was intentional. These were recorded as naive timestamps lacking timezone information in the first place.
Improves the grouping of multiline history entries
by sepearating the timestamps and history entires onto seperate lines.
Use wcsftime() Saves us a conversion, might as well.
- Comment out asciinema - people too often leave a link there.
- "Launch fish" is probably a stupid thing to have a first step.
- Combine the expected/actual result sections, maybe that was too tedious.
Another dev noticed that tests/printf.in was failing because they didn't have
the fr_FR.UTF-8 locale installed. Make that test more resilient by trying
other locales and if no suitable locale is found skipping the test.
The previous solution would not erase the previous bindings if
fish_vi_key_bindings was called with a mode argument. So if the user
switched to vi with a different initial mode, they'd keep their previous
bindings also.
Supersedes e89057b.
Some of these were defined in the shared bindings, some (like \cy yank)
were just literally duplicate in the same files.
This should _not_ change anything. In particular this does not remove
hardcoding of sequences (because terminfo might be wrong or the term
might need smkx).
Found with
```
function bind
set -l binds (builtin bind)
builtin bind $argv
set -l newbinds (builtin bind)
if set -q argv[1]; and not test "$argv[1]" = "--erase"
if test "$binds" = "$newbinds"
echo "Duplicate: " (string escape -- $argv)
end
end
end
```
The vi-bindings function would unconditionally erase all bindings,
making it impossible to call it last. This would disable the
mode-indicator (and in future also the cursor).
Make it so any argument to fish_vi_key_bindings stops it from erasing
bindings.
It would also be possible to demand an argument to erase (or to erase as
a separate step). but the usual case seems to be _switching_ to a set of bindings.
This didn't work on platforms where tput exists but can never accept
terminfo names. This includes the current versions of FreeBSD - it
used to do both, now it doesn't. So, fall back to the old termcap names
by (tput smso; or tput so). Add check for the tput program before we
even try.
Fix problem with Makefile not escaping 'echo' correctly
Support systems where 'tput' only works with termcap names
Adjust output. Shade out most run-of-the-mill output so you can't
miss warnigns and our status signposts amonst the .o files created.
The extra things `eval` does are all for code that runs
interactively. Because we just define a function, we don't need it.
This improves alias' performance by about 20-25% (0.783608s to 0.585585s
on about 500 aliases) and avoids triggering #3345.
This can be prohibitively slow on large repositories (minutes!).
While regrettable, no user is going to like waiting that long.
Work towards #3342, rerun of #3230.
Many thanks to @gladhorn for the idea!
Offering auto completion for existing commits is great, but on big
repositories, it suddenly becomes really slow, even with fast hard
disks, since each commit is read and then a line processed for it.
Instead limit to the last 500 commits (arbitrary number) which still
feels fast. Going back further in history can easily and more reasonably
done with git log etc.
* completions/p4.fish
* Updated per comments + added p4 clients
* p4 completions: integ, opened, reopen. "default" CL support.
* Perforce RCS -> SCM
* p4 reopen: list opened files
* Fixed per review, added -d for all functions
Fixed per comments in review by @faho,
Added -d for all functions,
Renamed ”subcommand" term to “command” (so there’s probably diff noise)
* p4 completions with submit list of files
* p4 completions for submit: lists open files
Implementing the --shadow-builtin flag has proven to be highly controversial.
Revert the introduction of that flag to the `function` command. If someone
shoots themselves in the foot by redefining a builtin as a function that's
their problem and not our responsibility to protect them from doing so.
Fixes#3319
It's not ideal since we can't get the real result so we just assume it's
"0". That triggers the easier path, which still might display the wrong
thing, but we have to pick something.
Possible fix for #3321.
* fixes broken completion of screen on osx, test on ubuntu and mac with fish 2.3.1
* replaces sed, __fish_sgrep with fish builtin string
* add completion for `screen -x`
* adjust format (e.g. 12345.socket\t01/01/16 09:55:00 Detached)
* Fix brew completion for `brew install`
* Using `brew search` rather than `brew --repository`
- Homebrew migrated the directory holding their Formulas into Taps, breaking fish's completions.
- New method to find all Homebrew-core Formulas
- Compatible with old versions of Homebrew and more future proof
* Replace fixed path to search formula with `brew --repository`
* Replace `sed` with builtin `string replace`
Fixes fish-shell/fish-site/issues/34.
These make the inline commands illegible on Android Chrome:
respectively, overlapped with other text, and smaller than the body
text.
In the C/POSIX locale EOF on the tty wasn't handled correctly due to a change
a few months ago to fix an unrelated problem with that locale. What is
surprising is that the core fish code doesn't explicitly depend on
input_common_readch returning WEOF if a character isn't seen within
`wait_on_escape_ms` after an escape.
Fixes#3214
The `fish_key_reader` program emits an example `bind` command for the sequence
of keystrokes it sees. However, if that sequence includes a space or del
character the example `bind` command includes extraneous commentary that makes
the command invalid.
Fixes#3262
The recent change to reconcile the history builtin command and function
broke an undocumented behavior of `history --delete`. This change
reinstates that behavior. It also adds an explicit `--exact` search mode
for the `--search` and `--delete` subcommands.
Fixes#3270
The last commit to .gitignore caused git to ignore the whole xcode
project. Also, the addition of `/` to too many paths means missing things in
the pcre2 subdir.
Add a bunch of files I found evidence had existed in my checkout at one
time or another - and a few things I decided to add after looking over
other projects' .gitignores..
* Use the Makefile mechanism to also detect old key_reader binaries
Don't tell them to delete it - just that they might want fkr.
You'd have to of installed it manually. Not unhelpful to point
that out here.
* Remind folks to start a new fish session after install
* Add output for installation during silent builds
* Suppress "Fish has been built, use make install..." if fish was
actually built with a goal of `make install' from the command-line
already and it's already working on that. It can be confusing.
* Get rid of the $(call) stuff for color usage
Fixes problem with gucked up output when doing parallel builds
* Brighten up output with more colors and fancy attributes.
Works fine with TERM=dumb
* Introduce show-VAR targets - with VAR being a variable name,
adding this to the target list wherever you like will cause
the pretty-printed VAR='VAR' output. Can also use MAKE show-FOO
to quickly diagnose problems.
* Put the -D macros in CPPFLAGS (C preprocessor flags) as God
intended instead of MACROS. CPPFLAGS was already defined but
empty - and MACROS was getting added to CXXFLAGS and used on
every CXX invocation.
* Addresss a handful of missed bits from the initial silent make
merge. Like msgfmt output.
* Fix config.status output being completely silenced even when
it's re-running ./configure.
* Work around annoyance with PCRE being perfectly quiet except a
minority of the rm's during make clean.
I recently made a change to remove some no longer needed .gitignore rules
and generally improve the readability of that config file. Contributor
@floam noted that this config file was still too permissive and
ambiguous. This change adds additional refinements that should
a) make it easier for someone to understand why a file/directory is being
excluded, and
b) make it less likely that a mistake results in a file being inadvertently
excluded.
I noticed while doing a build that `git status` was reporting the `obj/`
directory had been modified. Add that to the list of ignored directories.
Remove a couple of build artifacts (`seq` and `set_color`) which aren't
created anymore. Break the ignored files into well defined groups with the
entries sorted in each group.
Only on the OS X travis build.
I can't reproduce it but I figure it's something to do
with test -e vs test -x or the echo -n in command substitution.
Oops.
This was erroneously omitted from the previous commit.
Now backspace in insert mode does backward-delete-char, in default mode
backward-char (i.e. no deleting, just moving). This is consistent with vim.
This undoes the inheritance since it shared too much.
The idea here is to share bindings that aren't something the editors we're inspired by do - there's no "execute" in vi.
The basic editing and moving bindings are now vi-style in vi-mode and emacs-style in default mode.
In particular, Screen and emacs' "ansi-term" behave like neovim in that
they just ignore the sequences, which leads to the terminal rendering
default color (most of the time white) instead.
Only one file belonging to fish-shell had DOS/bogus line endings,
with `git add' picking up changes after updating .gitattributes:
hostname.fish.
Unsurprisingly, it has code to support cygwin and was likely
worked on by a user on a Windows machine. This will help
such cases in the future.
Also, in pcre2-10.21/, there was RunTest.bat which was (correctly)
CRLF formatted. We don't use this batch script at all, so rather
than LF it or add an exception, blast it away like the other pcre2
files omitted from the repo.
There was a lot of very noisy output for things
we do not care about, particularly the echoing of clang commands,
installs, and doxygen output.
We now show output like " CXX src/fish.o" and not much else
unless there is a problem.
Add mechanism to show e.g. CXXFLAGS variables at top of build.
Improve make docs output
Highlight FISH_BUILD_VERSION
FISH_BUILD_VERSION is yellow.
Run ./configure with -q
Commit acfd3801 included a legitimate bug fix and a second change that
didn't correct an actual bug but made the code more fragile. Revert the
second part of that commit (while also suppressing the uninitialized
variable compiler warning that caused the ill-advised change).
Just use static_cast directly instead of inscrutible "shortcut"
macro.
It was not always used and doesn't seem to do much besides scramble
things up; encountering CAST_INIT() in the code seems likely to lead
to head scratching due to the transformation taking place.
It was added to save folks typing the type twice, now with 100
columns available, let's roll that convenience macro back.
sockaddr_dl:
Perform reinterpret_cast<sockaddr_dl> conversion. The cast affected
alignment and looks fishy to a compiler (but it's fine). Ditch
C-style cast and communicate we're doing that on purpose.
Where we already manage to cover an enum entirely in a switch
statement such that default: cannot be reached, help ensure
it stays that way by condemning that route.
Also adjust a 'const' I came across that is ignored.
A common problem for users is that fish doesn't get a locale. This often
happens if systemd is used with getty and fish as login shell.
Fixes#277
Note that I (@krader) made editorial changes before merging this. For
example, running `make style` and otherwise changing long statements to a
series of shorter statements. So if there are any problems it is possible
I introduced them.
A user reported that fish was dying from a SIGSEGV when launched by the
sjterm terminal app. This was traced to a bug in sjterm passing an empty
argv array to the shell. Which, while technically legal, is very unusual
and a bad practice.
Fixes#3269
This change made clang-format apply to our JavaScript sources,
but we haven't yet agreed upon a JavaScript style guide. Once we
agree on one, we can include the JS files in the formatting pass too.
This reverts commit 799d8ddfc4.
Update docs for "brblack", "brwhite" existing.
We no longer mention colors like grey, brown and purple, which are aliases
for yellow, magenta, white/black. The color names still work but there
isn't a good argument for there being two ways to do that: especially in
the age of 24-bit terminals where one might expect yellow and brown or
magenta and purple to actually be different colors.
Copyedit rest of document for inaccuracies, strange advice, brevity (a lot
of "you" pronouns, for example.)
Document the color fallback feature (set_color 313554 blue) that's been
present quite a while.
The `set_color normal` text had a comment that caused
the example to wrap to the next line in an 80 column window.
Shorten the comment so the example fits on one line.
Fish assumed that it could use tparm to emit escapes to set colors
as long as the color was under 16 or max_colors from terminfo was 256::
if (idx < 16 || term256_support_is_native()) {
// Use tparm to emit color escape
writembs(tparm(todo, idx);
If a terminal has max_colors = 8, here is what happenened, except
inside fish:
> env TERM=xterm tput setaf 7 | xxd
00000000: 1b5b 3337 6d .[37m
> env TERM=xterm tput setaf 9 | xxd
00000000: 1b5b 3338 6d .[39m
The first escape is good, that second escape is not valid.
Bright colors should start at \e[90m:
> env TERM=xterm-16color tput setaf 9 | xxd
00000000: 1b5b 3931 6d .[91m
This is what caused "white" not to work in #3176 in Terminal.app, and
obviously isn't good for real low-color terminals either.
So we replace the term256_support_is_native(), which just checked if
max_colors is 256 or not, with a function that takes an argument and
checks terminfo for that to see if tparm can handle it. We only use this
test, because otherwise, tparm should be expected to output garbage:
/// Returns true if we think tparm can handle outputting a color index
static bool term_supports_color_natively(unsigned int c) { return max_colors >= c; }
...
if (term_supports_color_natively(idx) {
And if terminfo can't do it, the "forced" escapes no longer use the fancy
format when handling colors under 16, as this is not going to be compatible with
low color terminals. The code before used:
else {
char buff[16] = "";
snprintf(buff, sizeof buff, "\x1b[%d;5;%dm", is_fg ? 38 : 48, idx);
I added an intermediate format for colors 0-15:
else {
// We are attempting to bypass the term here. Generate the ANSI escape sequence ourself.
char buff[16] = "";
if (idx < 16) {
snprintf(buff, sizeof buff, "\x1b[%dm", ((idx > 7) ? 82 : 30) + idx + !is_fg * 10);
} else {
snprintf(buff, sizeof buff, "\x1b[%d;5;%dm", is_fg ? 38 : 48, idx);
}
Restores harmony to white, brwhite, brblack, black color names.
We don't want "white" to refer to color color #16, but to the
standard color #8. #16 is "brwhite".
Move comments from output.h to output.cpp
Nuke the config.fish set_color hack for linux VTs.
Sync up our various incomplete color lists and fix all color values.
Colors 0-8 are assumed to be brights - e.g. red was FF0000. Perplexing!
Using this table:
<http://www.calmar.ws/vim/256-xterm-24bit-rgb-color-chart.html>
Fixes#3176
This is a regression introduced by 834ebef53c
Bolster with a check for only login sessions too -- hopefully makes it
less annooying on subshells in general.
Fixes#3261
clang-format supports javascript and our 1 obj-c file. Also,
let it pick up a handful of missed files of types we already inteded it
to fix up.
Improve formatting and output.
Add some debug output like there is for 24bit mode.
I see now there is no need to setup terminal here - we get called early
sometimes for colors to work in config.fish to work but that is not so fatal.
Just check cur_term and trust get called again soon.
This fixes several problems with how the builtin `history` command handles
arguments. It now complains and refuses to do anything if the user specifies
incompatible actions (e.g., `--search` and `--clear`). It also fixes a
regression introduced by previous changes with regard to invocations that
don't explicitly specify `--search` or a search term.
Enhances the history man page to clarify the behavior of various options.
This change is already far larger than I like so unit tests will be added
in a separate commit.
Fixes#3224.
Note: This fixes only a couple problems with the interactive `history
--delete` command in the `history` function. The main problem will be
dealt with via issue #31.
We were effectively inferring 256 color support **only**.
If terminfo reports 256 max_colors for this $TERM but
that is not named xterm or does not contain "256color" in name,
term256_support_is_native()'s result did not affect the recorded
support.
Noticed with Terminal.app set to nsterm, and a newer ncurses
with good terminfo for the terminal on modern OS X:
http://invisible-island.net/ncurses/terminfo.src.html#toc-_Apple__Terminal_app
Restores erroneous changes to lexicon_filter and changes to doc_src/ pages. Done by hand to ensure version history.
Fixes display of % when misinterpreted by Doxygen.
* git completion: add mergetool
The list of tools is stole from the bash completion file that comes with
git.
* git completion: complete files with merget conflict for mergetool
We don't seem to mention in the documentation that we were forcing
-t for all interactive uses. If we want to do that we should apply
that in the builtin.
history.fish reimplementing every option and doing things kind of
differently is a real pain and it's not clear if the docs are
referring to the or the wrapper script or both.
Attempting to execute something like `exec "$test"` results in a fish internal
token (a Unicode private use char) being printed in the resulting error
message. That's obviously not desirable as well as confusing.
Fixes#3187
Prior to this fix, when performing completions, we would prepend
the wildcard to the resulting files. When doing fuzzy completions,
we would take some wildcard segment, attempt to locate it in the
final completion, and then replace it with our fuzzy-matched directory.
With this fix, we pass along the "resolved so far" path, and prepend
that instead of doing "surgery" on the completion. This simplifies the
logic.
Fixes#3185
GitHub apparently classifies `fish-shell` as a C project because we just
barely have more C than C++ due to vendoring pcre2. Update
.gitattributes for this. Also tell it about our documentation.
see https://github.com/github/linguist
Problem with Type2ManParser
before:
complete -c xcode-select -s h -l help --description 'Prints the usage
message. UNINDENT NDENT 0. 0.'
after:
complete -c xcode-select -s h -l help --description 'Prints the
usage message.'
Don't truncate long lines with " [See Man Page]" suffix - use the
reclaimed 15 characters for more-useful usage info.
Improve the --verbose output with:
- spacing fixes
- diagnostics related to input print repr()/quoted as %r to be less
confusing.
- get rid of stupid name() and use type()/__class__.__name__,
- Always use new-style (new as in post python 2.2) classes so this
behaves the same whether we run in python 2 or 3.
- Properly convert left-quotes and right-quotes to that character in
deroff.py
Added instructions to try without their configuration/plugins in place on issues template.
Make it clear to future humans which fish version a user is confirming was affected (the current "latest fish")
The extra {completions,functions,conf}.d directories may be placed
outside the writeable prefix. Attempt to create them, but don't abort
the installation if it is not possible.
(There is an argument for not creating these folders at all, but that
reduces their discoverability.)
As discussed in https://github.com/Homebrew/homebrew-core/pull/2813
Someone running fish in an unusual locale reported that an `assert()` was
firing when they typed `pkill c`. I traced it to two bugs. First, the
__fish_make_completion_signals command was producing a weird result. Second,
the builtin `complete` command wasn't adequately verifying its arguments.
Fixes#3129
The tests/*.status files aren't useful so eliminate them. Just verify whether
a given test module exited with a success status. There isn't any point in
having a "status" file that indicates the test module should exit with a
success (zero) status.
Closes#3208Closes#3209
Make `fish_indent`, `fish_key_reader` and `fish` recognize and assign
the same meaning to the `-d` and `-D` flags. Also, fix some errors and
stylistic issues in the associated man pages.
Fixes#3191
Remove isatty() check for stdout - this was added for both stdout
and stdin because "there is no reason to do that", but there is one:
Leaves only the bind command printed ot stdout, this allows
for one to do `fish_key_reader > bind_command.fish` to capture the bind
command while seeing the rest of the output.
* if (result == ULLONG_MAX) is always false, likely a typo as
result is unsigned long, and the comment says ULONG_MAX.
* use off_t instead of size_t for file size where it can mismatch
st_size's type in stat.h
Instead of just using Courier New across the board, have the
browser try several likely available fonts before defaulting
to the system's "monospace".
Thanks @MarkGriffiths
Fixes#2924
After the colorized syntax output in type -a foo, "foo is /usr/..."
would also be colored. (or 'test' in fish_indent foo.fish; echo test).
Make fish_indent reset the color when it's done.
Doesn't colorize if output is redirected.
This is "fun" and indenting happens to make most of the included
functions display more narrow and fit better into a terminal window.
After the colorized syntax output in type -a foo, "foo is /usr/..."
would also be colored. (or 'test' in fish_indent foo.fish; echo test).
Make fish_indent reset the color when it's done.
Doesn't colorize if output is redirected.
This is "fun" and indenting happens to make most of the included
functions display more narrow and fit better into a terminal window.
The previous commit to add a `--with-timestamp` flag to the `history` command
caused me to notice the history function didn't recognize the new long option.
Neither did it recognize the short options for the builtin command. This
change fixes both of those issues.
I did some research and experiments. For good or bad the `bind` command
requires the use of wide char codepoints (e.g., \u1234) for non-ASCII
chars. So don't force the use of the POSIX locale, but do provide it as
an option for people who want to see the individual bytes rather than a
decoded wide char.
Simplify the format of the information displayed for each character. There
really isn't much point in providing decimal, octal, and hexadecimal. Just
print hex and symbolic representations.
Add an example `bind` command that a user can copy/paste.
Closes#3183
Another developer noticed that redirecting stdin of `fish_key_reader`
results in weird behavior. Which is not at all surprising. So add checks
to ensure stdin and stdout are attached to a tty.
Add some rudimentary unit tests for this program.
A discussion on Gitter proposed allowing the user to signal their desire to
exit fish_key_reader by pressing \cC or \cD twice in a row. This implements
that.
I also decided to refactor how signals are handled. Most notably receiving a
signal will no longer print a diagnostic message unless you've enabled
debugging with `-d2` (or higher level).
Improves experience during upgrades, accidentally running
an old fish with a new environment. No errors just from
printing a prompt. Fixes#3057.
Print helpful notice also when launching mismatched fish.
Autoloadable string.fish -- only create function if not builtin.
In addition to fixing the setting of the locale to C/POSIX this also
corrects several problems introduced by the commits made in the past
couple of days. As a consequence of dealing with all of this I decided
to refactor the code to simplify one of the overly long functions I
introduced in my previous change.
Fixes#3168
There is no conceivable way in which timef()'s invocation of gettimeofday()
can fail where it makes sense to continue running. Yes, one such,
legitimate, failure mode is a 32-bit kernel and the date is greater than
2038-01-19 03:14:07. If you're running a fish binary on such a system
it's time to upgrade. Otherwise, either the hardware or OS is broken.
Fixes#3167.
* Correct notice about ^C
* Move time deltas to end of the line away from the important info on
left.
* Use timef() instead of gettimteofday() ourselves
* Show time in ms (is this even useful in any unit? Maybe testing escape
delays...)
* Make init more similar to other apps.
```
~ $ set -e TERM; fish
Assertion failed: (!is_missing), function c_str, file src/env.cpp, line 690.
fish: 'fish' terminated by signal SIGABRT (Abort)
```
We need to actually export the curses/terminfo env vars in order for
`setupterm()` to be able to use them. While fixing this I reworked the
fallback logic implemented by @zanchey in response to issue #1060 in
order to simplify the logic and clarify the error messages.
This does not allow someone to change the curses/terminfo env vars after
the first prompt is displayed (you can but it won't affect the current
fish process). It only makes it possible to set `TERM`, `TERMINFO`, and
`TERMINFO_DIRS` in *config.fish* or similar config file and have them be
honored by fish.
```
~ $ set -e TERM; fish
Assertion failed: (!is_missing), function c_str, file src/env.cpp, line 690.
fish: 'fish' terminated by signal SIGABRT (Abort)
```
Completion throws and error about the command `__fish_contains_opts` beings unknown. It seems to be a simple typo, as all other completions use `__fish_contains_opt`
https://www.freebsd.org/cgi/man.cgi?query=ssh_config&sektion=5
1. It is possible to add multiple whitespace characters between the keyword (i.e. Host) and the argument(s).
2. It is allowed to have a single = and whitespace between the keyword and the argument(s).
3. It is possible to add multiple host names under a single Host directive by spacing the names apart.
1. and 3. are actual conventions that we use in our team, and I couldn't get auto-complete working for fish without this modification.
Modification explained:
a. The space between Host(?:name)? and the \w.* was replaced by (?:\s+|\s*=\s*) to match any sequence of whitespace characters, or optional whitespaces with a single =, per spec.
b. Result of first replacement is piped through another string replace to switch duplicate whitespace characters to a single space, and then piped to be split by that space. This allows specifying several aliases or host names in a single Host/Hostname definition, also per spec.
Fix test setup bogosities. Specifically, they weren't hermetic with respect to
locale env vars.
Rewrite the handling of locale vars to simplify the code and make it more like
the pattern most programs employ.
Fixes#3110
Configure the tty driver to ignore the lnext (\cV) and werase (\cW) characters
so they can be bound to fish functions.
Correct the `fish_key_bindings` program to initialize the tty in the same
manner as the `fish` program.
Fixes#3064
Upgraded to using Tavis trusty dist (from precise)
Ubuntu's clang is only 3.4 though.
For fancy address, thread-sanitizer stuff, easier to do on OS X.
We can use the clang that comes with xcode 8 beta.
The tty device timestamps on MS Windows aren't usable because they're always
the current time. So fish can't use them to decide if the entire prompt needs
to be repainted.
Fixes#2859
The original `key_reader` program was useful but didn't do much that `xxd`
or `od -tx1z` didn't do. Furthermore, it wasn't built and installed by
default. This change adds features that make it superior to those programs
for decoding interactive key presses and makes it a first-class citizen
like the `fish_indent` program that is always available.
Fixes#2991
The tty device timestamps on MS Windows aren't usable because they're always
the current time. So fish can't use them to decide if the entire prompt needs
to be repainted.
Fixes#2859
I recently noticed there were several invocations of `wcwidth()` that should
have been `fish_wcwidth()`. This adds custom cppcheck rules to detect that
mistake.
https://www.freebsd.org/cgi/man.cgi?query=ssh_config&sektion=5
1. It is possible to add multiple whitespace characters between the keyword (i.e. Host) and the argument(s).
2. It is allowed to have a single = and whitespace between the keyword and the argument(s).
3. It is possible to add multiple host names under a single Host directive by spacing the names apart.
1. and 3. are actual conventions that we use in our team, and I couldn't get auto-complete working for fish without this modification.
Modification explained:
a. The space between Host(?:name)? and the \w.* was replaced by (?:\s+|\s*=\s*) to match any sequence of whitespace characters, or optional whitespaces with a single =, per spec.
b. Result of first replacement is piped through another string replace to switch duplicate whitespace characters to a single space, and then piped to be split by that space. This allows specifying several aliases or host names in a single Host/Hostname definition, also per spec.
Upgraded to using Tavis trusty dist (from precise)
Ubuntu's clang is only 3.4 though.
For fancy address, thread-sanitizer stuff, easier to do on OS X.
We can use the clang that comes with xcode 8 beta.
This was causing issues launching fish_config on OS X if fish.app is
renamed to contain a space (noted, but likely not the actual problem,
in issue #3140)
check-uninstall detects incompatible old installations of fish pre-2006;
it seems unlikely that there are still from-source installations that
will be incompatible in only this way.
install-sh works around a limitation in darcs, the previous VCS, and is
no longer required.
install-force should be refactored at some point.
* if (result == ULLONG_MAX) is always false, likely a typo as
result is unsigned long, and the comment says ULONG_MAX.
* use off_t instead of size_t for file size where it can mismatch
st_size's type in stat.h
For example, an argument 12345^ is a real argument, not a redirection
There's no reason to use ^ here instead of >, and it's annoying to git
users.
Fixes#1873
When given no path, the logic was happy to try to use
an unitialized output_location.
$ fish_indent -w < test.fish
Opening "(null)" failed: Bad address
Initialize the string, and repair the logic to catch this case
and report the problem correctly.
I mixed things up with `netctl` somehow. Since the two are quite
different they do not have the same function, they should not have
the same completions.
I also find that I would be smarter to only display the relevent
profiles given what we want to do. If we want to disable a profile
we should only complete with enabled profile for completion for
instance. I don't know if the implemention is nice enough however.
This makes fish_mode_prompt rely on $fish_key_bindings instead.
fish_bind_mode is also set in default mode (only always "default"), so
it can't be used as the indicator.
Closes#3067.
(cherry picked from commit 8ab980b793)
Update Xcode project, HeaderDoc comments.
Fix various invalid HeaderDoc comments. Normalize autoload.cpp/autoload.h as an example of something closer to "proper" HeaderDoc formatting.
Have clang/Xcode validate HeaderDoc comments. Remove key_reader.cpp from Xcode project.
Fix test setup bogosities. Specifically, they weren't hermetic with respect to
locale env vars.
Rewrite the handling of locale vars to simplify the code and make it more like
the pattern most programs employ.
Fixes#3110
We need to actually export the curses/terminfo env vars in order for
`setupterm()` to be able to use them. While fixing this I reworked the
fallback logic implemented by @zanchey in response to issue #1060 in
order to simplify the logic and clarify the error messages.
This does not allow someone to change the curses/terminfo env vars after
the first prompt is displayed (you can but it won't affect the current
fish process). It only makes it possible to set `TERM`, `TERMINFO`, and
`TERMINFO_DIRS` in *config.fish* or similar config file and have them be
honored by fish.
The issue here is that when inserting a common prefix for e.g. a
substring match, we increase the amount of available candidates again to
things the user didn't want.
An example is in share/functions - a completion for "inter" would
previously expand to "__fish_" because it matched:
- __fish_config_interactive.fish
- __fish_print_interfaces.fish
- __fish_print_lpr_printers.fish
The completion afterwards would then show 189 possible matches, only
three of which (the above) actually matched the original "inter".
Fixes#3089.
Cppcheck was complaining about the `return val.c_str()` at the end of the
`wgettext()` function. That would normally a bug since the lifetime of
`val` ends when the function returns. In this particular case that's not
true because the string is interned in a cache. Nonetheless, rather than
suppress the lint warning I decided to modify the API to be more idiomatic.
In the process of fixing the aforementioned lint warning I fixed several other
lint errors in that module.
This required making our copy of `wgetopt()` compatible with the rest of
the fish code. Specifically, by removing its local definitions of the
"_" macro so it uses the same macro used everywhere else in the fish
code. The sooner we kill the use of wide chars the better.
Completion throws and error about the command `__fish_contains_opts` beings unknown. It seems to be a simple typo, as all other completions use `__fish_contains_opt`
This only eliminates errors reported by `make lint`. It shouldn't cause any
functional changes.
This change does remove several functions that are unused. It also removes the
`desc_arr` variable which is both unused and out of date with reality.
This speeds up the common case when IO is slow, e.g. when used with
sshfs.
We only use the short sha for figuring out whether the state is
valid (for which a long sha should also work) and for display when HEAD
is detached (I think that's the correct git-ism).
Working towards #3083.
This makes the wide char tests run by `./fish_tests` pass on systems where
sizeof wchar_t is two (e.g., Cygwin). In doing so it corrects several
problems with the underlying code in module *utf8.cpp* such as allowing
five and six byte UTF-8 sequences. They were allowed by the original
Unicode proposal but are not allowed by the adopted standard.
Configure the tty driver to ignore the lnext (\cV) and werase (\cW) characters
so they can be bound to fish functions.
Correct the `fish_key_bindings` program to initialize the tty in the same
manner as the `fish` program.
Fixes#3064
Overwriting the user's clipboard by default is annoying and contributors
don't use it.
This is better served via an explicit binding that calls e.g. `xsel`.
Move to `string match` syntax from `grep` caused test to see if the Atom Package Manager is installed to always fail. This appears to fix the issue (tested on fish 2.3.0 with apm 1.6.0).
Previously, `--erase` would not accept any options and wouldn't read
"--" as option-separator. Now it does like every other "command", and it
could conceivably gain e.g. a "--prefix" option.
This change allows the user to specify the script name on the CLI in addition
to being redirected from stdin. It also adds a `-w` flag to write the modified
script to the original file.
This potentially leads to an unusable session (when fish_key_bindings is
set in config.fish to a value without corresponding function), so we
should take care.
I noticed that the `test_convert()` function was randomly failing when
run on OS X Snow Leopard. I tracked it down to the `mbrtowc()` function on
that OS being broken. Explicitly testing for UTF-8 prefixes that identify
a sequence longer than four bytes (which the Unicode standard made illegal
long ago) keeps us from having encoding errors on those OS's.
This also makes the errors reported by the `test_convert()` function actually
useful and readable.
Lastly, it makes it possible to build fish on OS X Snow Leopard.
This is quite ugly because the syntax is ugly, the documentation both
under- and overspecified at the same time (a BNF that isn't...) and it
has a lot of functionality.
But the completion works half-decent for `ip address`, so let's ship it.
Drops configure check for wcsdup, wcslen, wcscasecmp, wcsncasecmp,
wcwidth, wcswidth, wcstok, fputwc, fgetwc, and wcstol. Drop the fallback
implementations of these on non-Snow Leopard platforms.
Work on #2999.
fwprintf would segfault on DragonFly BSD 1.4.0, released in January
2006. This was fixed by DragonFly BSD 1.4.4, released in April 2006. It
seems unlikely that anyone is still running a ten-year-old, unsupported
version, and hoping that fish will continue to build.
I've checked this in virtual machines.
Work on #2999.
The autoconf-generated config.h contains a number of directives which
may alter the behaviour of system headers on certain platforms. Always
include it in every C++ file as the first include.
Closes#2993.
Instead of just using Courier New across the board, have the
browser try several likely available fonts before defaulting
to the system's "monospace".
Thanks @MarkGriffiths
Fixes#2924
This change does several things. First, and most important, it allows
dumping the "n" most recent stack frames on each debug() call. Second,
it demangles the C++ symbols. Third, it prepends each debug() message
with the debug level.
Unrelated to the above I've replaced all `assert(!is_forked_child());`
statements with `ASSERT_IS_NOT_FORKED_CHILD()` for consistency.
Fix a minor bogosity I noticed while building fish on OS X Snow
Leopard. It's technically not a bug because only old compilers complain
about the original statement but this change makes the one line this
changes consistent with the rest of the fish code.
It's currently too easy for someone to bork their shell by doing something
like `function test; return 0; end`. That's obviously a silly, contrived,
example but the point is that novice users who learn about functions are
prone to do something like that without realizing it will bork the shell. Even
expert users who know about the `test` builtin might forget that, say, `pwd`
is a builtin.
This change adds a `--shadow-builtin` flag that must be specified to
indicate you know what you're doing.
Fixes#3000
I'm doing this as part of fixing issue #2980. The code for managing tty modes
and job control is a horrible mess. This is a very tiny step towards improving
the situation.
The original `key_reader` program was useful but didn't do much that `xxd`
or `od -tx1z` didn't do. Furthermore, it wasn't built and installed by
default. This change adds features that make it superior to those programs
for decoding interactive key presses and makes it a first-class citizen
like the `fish_indent` program that is always available.
Fixes#2991
I'm going to modify these functions as part of dealing with issue #3000
and don't want those changes to be masked by running the files through
`make style`.
The fork (create new process) related debugging messages rely on an
undocumented env var and use `printf()` rather than `debug()`. There are
also errors in how the fork count is tracked that this fixes.
Fixes#2995
Some `oclint` errors regarding "useless parentheses" are meaningfull. But
the vast majority are bogus in as much as removing the parentheses reduces
readability. So fix a few of the egregious uses and otherwise suppress
that error.
I noticed that if I've previous done `make test` that a subsequent `make
style-all` attempts to restyle all the fish scripts in the *test* directory.
Those files are transient and not part of the git repository. Limit restyling
all fish scripts just to those in the *share* directory tree. There are a
couple elsewhere in the repo (e.g., *build_tools*) but they can be handled on
an individual basis.
This makes it easy for the user to request floating point output with the
desired number of digits after the decimal point (not to be confused with
significant digits).
Note that this is just a thin wrapper so someone can say `math -s3 10 / 3`
rather than `math "scale=3; 10 /3"`.
Resolves#1643
I missed restyling a few "switch" blocks to make them consistent with the rest
of the code base. This fixes that oversight. This should be the final step in
restyling the C++ code to have a consistent style. This also includes a few
trivial cleanups elsewhere.
I also missed restyling the "complete" module when working my way from a to z
so this final change includes restyling that module.
Total lint errors decreased 36%. Cppcheck errors went from 47 to 24. Oclint P2
errors went from 819 to 778. Oclint P3 errors went from 3252 to 1842.
Resolves#2902.
For this change I decided to bundle the remaining modules that need to be
resytyled because only two were large enough to warrant doing on their own.
Reduces lint errors from 225 to 162 (-28%). Line count from 3073 to 2465 (-20%).
Another step in resolving issue #2902.
* Add missing color definitions to __fish_init_1_50_0 reset.
The values where determined by inspecting the values of:
* fish_color_end
* fish_color_user
* fish_color_host
after resetting the color theme via fish_config.
* Add documentation for fish_color_user and fish_color_host.
Reduces lint errors from 36 to 33 (-8%). Line count from 1910 to 1476 (-23%).
Another step in resolving issue #2902.
This also fixes a stupid mistake from an earlier commit where I didn't realize
that osx/config.h was meant to be included as a semi-static file in the
repository.
There was an extended discussion in https://github.com/fish-shell/fish-shell/issues/2904 about using a bright yellow background to make the cancelled command indicator, ^C, standout. The upshot was that standout (i.e., reversing fg/bg colors) mode should be used until themes are agumented with proper support for background colors and special characters.
A few commands (fetch, pull and push at least) take a "repository" (aka
"remote") and then a "refspec" (we currently do branches here).
Fixes#2525 (seems that man is still alive)
fish_title currently outputs some escaped text, which can confuse
the line driver (#2453). Issue a carriage return so the line driver
knows we are at the beginning of the line, unless we are writing
the title as part of the prompt. In that case, we may have text from
the previous command still on the line and we don't want to move the
cursor.
Fixes#2453
In my rush to get the fix for the wrong default Vi mode escape delay merged
(commit 3e24ae80b3) I neglected to update the
unit test. This change corrects that oversight.
Also, correct the Vi mode default escape timeout. I intended it to be 100 ms
in my previous change but it ended up 10 ms which is far too short. A 10 ms
delay will continue to cause problems for people running fish inside `screen`,
`tmux`, or over high latency connections.
Don't `#include "*.cpp"` modules in other cpp modules. I already took care
of all the builtin_*.cpp modules in my previous change where I restyled
the builtin code. This change fixes the two remaining instances of this
anti-pattern.
Now that the IWYU cleanup has been merged compile all, not just a couple, of
the builtin modules independent of builtin.cpp. That is, no longer `#include
builtin_NAME.cpp` in builtin.cpp. This is more consistent, more in line with
what developers expect, and is likely to reduce mistakes.
Reduces lint errors from 384 to 336 (-13%). Line count from 6307 to 4988 (-21%).
Another step in resolving issue #2902.
- Set PCRE2_SUBSTITUTE_OVERFLOW_LENGTH to get the required buffer length
from pcre2 instead of guessing
- Set PCRE2_SUBSTITUTE_EXTENDED to enable extra goodies in the
replacement string
Remove the "make iwyu" build target. Move the functionality into the
recently introduced lint.fish script. Fix a lot, but not all, of the
include-what-you-use errors. Specifically, it fixes all of the IWYU errors
on my OS X server but only removes some of them on my Ubuntu 14.04 server.
Fixes#2957
This ensures they can just be called and "the right thing" will happen -
fish_user_key_bindings will be executed, the variable will reflect the bindings.
This makes fish_mode_prompt rely on $fish_key_bindings instead.
fish_bind_mode is also set in default mode (only always "default"), so
it can't be used as the indicator.
I noticed that Doxygen was also complaining about the "<asis>" and "<bs>"
tags. So convert those to the backslash form like we did for "<outp>" in the
previous commit.
Doxygen has been warning that `<outp>` and `</outp>` are not valid XML/HTML commands since commit cb6d5d76 on 20016-04-04. That's primarily because there is at present no way to tell Doxygen to recognize new XML/HTML tags. The actual errors look like this:
```
.../string.doxygen:187: warning: Unsupported xml/html tag </outp> found
```
I hate build errors since they a) cause needless concern, and b) make it harder to notice when I've introduced a new error. So switch from XML/C## style markup to Doxygen style markup for the "outp" annotation.
The OS X Xcode IDE has a weird requirement that block comments preceding a
function or class definition must begin with three slashes rather than two if
you want the comment displayed in the "Quick Help" window.
Make the history code conform to the new style guide. Every change was
produced by clang-format (e.g., `make style`) with the exception of
comments which were manually reformatted. That has to be done by hand
since clang-format leaves comments alone other than to reflow comment
lines to get them below the allowed line length.
The total number of lines is reduced by 313 lines (13%) in the two
affected files. Line count is generally a poor metric but in this
case it reflects an increase in information density without a loss in
readability. Furthermore, the standardization of braces, whitespace,
and comment style will make it easier for people to read the code.
This reduces the number of warnings by `make lint` from 168 to 87 (a 48%
decrease). Making it much easier to focus on the substantive lint issues.
Further improvements are possible. For example, many comments are not
very helpful (e.g., they point out the obvious) or provide insufficient
detail. But those are beyond the scope of this change.
This is the first step in resolving issue #2902.
If there are uncommitted changes use `git-clang-format` to limit the style
fixups to the lines being modified.
Refuse to do a `make style-all` if there are uncommitted changes.
Include a fix for the parsing of `git status` output that was recently
incorporated into the lint.fish script.
The readlink() function does not null terminate the path it returns.
Remove the OS X code that deals with a path buffer that is too short. For
one thing a loop isn't needed since we're told how big of a buffer
is required if the first _NSGetExecutablePath() call fails. But more
important it is so unlikely that the path will be longer than PATH_MAX
that if it is we should just give up.
Fixes 2931.
I just noticed that depending on the state of your working tree there can be
one or more spaces after the modification token and the file name. If there is
more than one space that causes the `string split` to produce unexpected
output.
In keeping with the change made by @ridiculousfish earlier today modify
the `keyword_description()` function to return a const wchar_t pointer.
Also, simplify the `token_type_description()` function to use the recently
introduced mapping array. This changes the wording of many of the token
type descriptions. However, I can't see this as being a problem since
the original descriptions (e.g., "token_redirection") are no clearer to
someone not acquainted with the implementation.
Fish keywords can be quoted and split across lines. Prior to this change
`fish_indent` would retain such odd, obfuscated, formatting. This change
results in all keywords being converted to their canonical form.
This required fixing a bug: the keyword member of parse_node_t wasn't being
populated. This hadn't been noticed prior to now because it wasn't used.
Fixes#2921
<!-- Sadly we can't enable the following two rules since doing so causes false
positives in standard header files rather than just project specific
source files. If we can find a way to enable these rules by also
excluding system include files we should do so.
<rule version="1">
<pattern> wcwidth \(</pattern>
<message>
<id>wcwidthForbidden</id>
<severity>warning</severity>
<summary>Always use fish_wcwidth rather than wcwidth.</summary>
</message>
</rule>
<rule version="1">
<pattern> wcswidth \(</pattern>
<message>
<id>wcswidthForbidden</id>
<severity>warning</severity>
<summary>Always use fish_wcswidth rather than wcswidth.</summary>
</message>
</rule>
<--!>
]]>
<rule>
<pattern>flock \(</pattern>
<message>
<id>flockSemanticsWarning</id>
<severity>warning</severity>
<summary>flock has a fallback implemented in terms of fcntl; ensure that the fcntl semantics will apply (see http://0pointer.de/blog/projects/locking.html)</summary>
There are no major changes between 2.5b1 and 2.5.0. If you are upgrading from version 2.4.0 or before, please also review the release notes for 2.5b1 (included below).
## Notable fixes and improvements
- The Home, End, Insert, Delete, Page Up and Page Down keys work in Vi-style key bindings (#3731).
# fish 2.5b1 (released January 14, 2017)
## Platform Changes
Starting with version 2.5, fish requires a more up-to-date version of C++, specifically C++11 (from 2011). This affects some older platforms:
### Linux
For users building from source, GCC's g++ 4.8 or later, or LLVM's clang 3.3 or later, are known to work. Older platforms may require a newer compiler installed.
Unfortunately, because of the complexity of the toolchain, binary packages are no longer published by the fish-shell developers for the following platforms:
- Red Hat Enterprise Linux and CentOS 5 & 6 for 64-bit builds
- Ubuntu 12.04 (EoLTS April 2017)
- Debian 7 (EoLTS May 2018)
Installing newer version of fish on these systems will require building from source.
### OS X SnowLeopard
Starting with version 2.5, fish requires a C++11 standard library on OS X 10.6 ("SnowLeopard"). If this library is not installed, you will see this error: `dyld: Library not loaded: /usr/lib/libc++.1.dylib`
MacPorts is the easiest way to obtain this library. After installing the SnowLeopard MacPorts release from the install page, run:
```
sudo port -v install libcxx
```
Now fish should launch successfully. (Please open an issue if it does not.)
This is only necessary on 10.6. OS X 10.7 and later include the required library by default.
## Other significant changes
- Attempting to exit with running processes in the background produces a warning, then signals them to terminate if a second attempt to exit is made. This brings the behaviour for running background processes into line with stopped processes. (#3497)
-`random` can now have start, stop and step values specified, or the new `choice` subcommand can be used to pick an argument from a list (#3619).
- A new key bindings preset, `fish_hybrid_key_bindings`, including all the Emacs-style and Vi-style bindings, which behaves like `fish_vi_key_bindings` in fish 2.3.0 (#3556).
-`function` now returns an error when called with invalid options, rather than defining the function anyway (#3574). This was a regression present in fish 2.3 and 2.4.0.
- fish no longer prints a warning when it identifies a running instance of an old version (2.1.0 and earlier). Changes to universal variables may not propagate between these old versions and 2.5b1.
- Improved compatiblity with Android (#3585), MSYS/mingw (#2360), Solaris (#3456, #3340)
- Like other shells, the `test` builting now returns an error for numeric operations on invalid integers (#3346, #3581).
-`complete` no longer recognises `--authoritative` and `--unauthoritative` options, and they are marked as obsolete.
-`status` accepts subcommands, and should be used like `status is-interactive`. The old options continue to be supported for the foreseeable future (#3526), although only one subcommand or option can be specified at a time.
- Selection mode (used with "begin-selection") no longer selects a character the cursor does not move over (#3684).
- List indexes are handled better, and a bit more liberally in some cases (`echo $PATH[1 .. 3]` is now valid) (#3579).
- The `fish_mode_prompt` function is now simply a stub around `fish_default_mode_prompt`, which allows the mode prompt to be included more easily in customised prompt functions (#3641).
## Notable fixes and improvements
-`alias`, run without options or arguments, lists all defined aliases, and aliases now include a description in the function signature that identifies them.
-`complete` accepts empty strings as descriptions (#3557).
-`command` accepts `-q`/`--quiet` in combination with `--search` (#3591), providing a simple way of checking whether a command exists in scripts.
- Abbreviations can now be renamed with `abbr --rename OLD_KEY NEW_KEY` (#3610).
- The command synopses printed by `--help` options work better with copying and pasting (#2673).
-`help` launches the browser specified by the `$fish_help_browser variable` if it is set (#3131).
- History merging could lose items under certain circumstances and is now fixed (#3496).
- The `$status` variable is now set to 123 when a syntactically invalid command is entered (#3616).
- Exiting fish now signals all background processes to terminate, not just stopped jobs (#3497).
- A new `prompt_hostname` function which prints a hostname suitable for use in prompts (#3482).
- The `__fish_man_page` function (bound to Alt-h by default) now tries to recognize subcommands (e.g. `git add` will now open the "git-add" man page) (#3678).
- A new function `edit_command_buffer` (bound to Alt-e & Alt-v by default) to edit the command buffer in an external editor (#1215, #3627).
-`set_color` now supports italics (`--italics`), dim (`--dim`) and reverse (`--reverse`) modes (#3650).
- Filesystems with very slow locking (eg incorrectly-configured NFS) will no longer slow fish down (#685).
- Improved completions for `apt` (#3695), `fusermount` (#3642), `make` (#3628), `netctl-auto` (#3378), `nmcli` (#3648), `pygmentize` (#3378), and `tar` (#3719).
- Added completions for:
-`VBoxHeadless` (#3378)
-`VBoxSDL` (#3378)
-`base64` (#3378)
-`caffeinate` (#3524)
-`dconf` (#3638)
-`dig` (#3495)
-`dpkg-reconfigure` (#3521 & #3522)
-`feh` (#3378)
-`launchctl` (#3682)
-`lxc` (#3554 & #3564),
-`mddiagnose` (#3524)
-`mdfind` (#3524)
-`mdimport` (#3524)
-`mdls` (#3524)
-`mdutil` (#3524)
-`mkvextract` (#3492)
-`nvram` (#3524)
-`objdump` (#3378)
-`sysbench` (#3491)
-`tmutil` (#3524)
---
# fish 2.4.0 (released November 8, 2016)
There are no major changes between 2.4b1 and 2.4.0.
## Notable fixes and improvements
- The documentation is now generated properly and with the correct version identifier.
- Automatic cursor changes are now only enabled on the subset of XTerm versions known to support them, resolving a problem where older versions printed garbage to the terminal before and after every prompt (#3499).
- Improved the title set in Apple Terminal.app.
- Added completions for `defaults` and improved completions for `diskutil` (#3478).
---
# fish 2.4b1 (released October 18, 2016)
## Significant changes
- The clipboard integration has been revamped with explicit bindings. The killring commands no longer copy from, or paste to, the X11 clipboard - use the new copy (`C-x`) and paste (`C-v`) bindings instead. The clipboard is now available on OS X as well as systems using X11 (e.g. Linux). (#3061)
-`history` uses subcommands (`history delete`) rather than options (`history --delete`) for its actions (#3367). You can no longer specify multiple actions via flags (e.g., `history --delete --save something`).
- New `history` options have been added, including `--max=n` to limit the number of history entries, `--show-time` option to show timestamps (#3175, #3244), and `--null` to null terminate history entries in the search output.
-`history search` is now case-insensitive by default (which also affects `history delete`) (#3236).
-`history delete` now correctly handles multiline commands (#31).
- Vi-style bindings no longer include all of the default emacs-style bindings; instead, they share some definitions (#3068).
- If there is no locale set in the environment, various known system configuration files will be checked for a default. If no locale can be found, `en_US-UTF.8` will be used (#277).
- A number followed by a caret (e.g. `5^`) is no longer treated as a redirection (#1873).
- The `$version` special variable can be overwritten, so that it can be used for other purposes if required.
## Notable fixes and improvements
- The `fish_realpath` builtin has been renamed to `realpath` and made compatible with GNU `realpath` when run without arguments (#3400). It is used only for systems without a `realpath` or `grealpath` utility (#3374).
- Improved color handling on terminals/consoles with 8-16 colors, particularly the use of bright named color (#3176, #3260).
-`fish_indent` can now read from files given as arguments, rather than just standard input (#3037).
- Fuzzy tab completions behave in a less surprising manner (#3090, #3211).
-`jobs` should only print its header line once (#3127).
- Wildcards in redirections are highlighted appropriately (#2789).
- Suggestions will be offered more often, like after removing characters (#3069).
-`history --merge` now correctly interleaves items in chronological order (#2312).
- Options for `fish_indent` have been aligned with the other binaries - in particular, `-d` now means `--debug`. The `--dump` option has been renamed to `--dump-parse-tree` (#3191).
- The display of bindings in the Web-based configuration has been greatly improved (#3325), as has the rendering of prompts (#2924).
- fish should no longer hang using 100% CPU in the C locale (#3214).
- A bug in FreeBSD 11 & 12, Dragonfly BSD & illumos prevented fish from working correctly on these platforms under UTF-8 locales; fish now avoids the buggy behaviour (#3050).
- Prompts which show git repository information (via `__fish_git_prompt`) are faster in large repositories (#3294) and slow filesystems (#3083).
- fish 2.3.0 reintroduced a problem where the greeting was printed even when using `read`; this has been corrected again (#3261).
- Vi mode changes the cursor depending on the current mode (#3215).
- Command lines with escaped space characters at the end tab-complete correctly (#2447).
- Distributors, packagers and developers will notice that the build process produces more succinct output by default; use `make V=1` to get verbose output (#3248).
- Improved compatibility with minor platforms including musl (#2988), Cygwin (#2993), Android (#3441, #3442), Haiku (#3322) and Solaris .
---
# fish 2.3.1 (released July 3, 2016)
This is a functionality and bugfix release. This release does not contain all the changes to fish since the last release, but fixes a number of issues directly affecting users at present and includes a small number of new features.
## Significant changes
- A new `fish_key_reader` binary for decoding interactive keypresses (#2991).
-`fish_mode_prompt` has been updated to reflect the changes in the way the Vi input mode is set up (#3067), making this more reliable.
-`fish_config` can now properly be launched from the OS X app bundle (#3140).
## Notable fixes and improvements
- Extra lines were sometimes inserted into the output under Windows (Cygwin and Microsoft Windows Subsystem for Linux) due to TTY timestamps not being updated (#2859).
- The `string` builtin's `match` mode now handles the combination of `-rnv` (match, invert and count) correctly (#3098).
- Improvements to TTY special character handling (#3064), locale handling (#3124) and terminal environment variable handling (#3060).
- Work towards handling the terminal modes for external commands launched from initialisation files (#2980).
- Ease the upgrade path from fish 2.2.0 and before by warning users to restart fish if the `string` builtin is not available (#3057).
-`type -a` now syntax-colorizes function source output.
- Added completions for `alsamixer`, `godoc`, `gofmt`, `goimports`, `gorename`, `lscpu`, `mkdir`, `modinfo`, `netctl-auto`, `poweroff`, `termite`, `udisksctl` and `xz` (#3123).
- Improved completions for `apt` (#3097), `aura` (#3102),`git` (#3114), `npm` (#3158), `string` and `suspend` (#3154).
---
# fish 2.3.0 (released May 20, 2016)
There are no significant changes between 2.3.0 and 2.3b2.
This document provides guidelines for making changes to the fish-shell project. This includes rules for how to format the code, naming conventions, etc. It also includes recommended best practices such as creating a Travis-CI account so you can verify your changes pass all the tests before making a pull-request.
See the bottom of this document for help on installing the linting and style reformatting tools discussed in the following sections.
Fish source should limit the C++ features it uses to those available in C++03. That allows fish to use a few components from [C++TR1](https://en.wikipedia.org/wiki/C%2B%2B_Technical_Report_1) such as `shared_ptr`. It also allows fish to be built and run on OS X Snow Leopard (released in 2009); the oldest OS X release we still support.
## Include What You Use
You should not depend on symbols being visible to a `*.cpp` module from `#include` statements inside another header file. In other words if your module does `#include "common.h"` and that header does `#include "signal.h"` your module should pretend that sub-include is not present. It should instead directly `#include "signal.h"` if it needs any symbol from that header. That makes the actual dependencies much clearer. It also makes it easy to modify the headers included by a specific header file without having to worry that will break any module (or header) that includes a particular header.
To help enforce this rule the `make lint` (and `make lint-all`) command will run the [include-what-you-use](http://include-what-you-use.org/) tool. The IWYU you project is on [github](https://github.com/include-what-you-use/include-what-you-use).
To install the tool on OS X you'll need to add a [formula](https://github.com/jasonmp85/homebrew-iwyu) then install it:
```
brew tap jasonmp85/iwyu
brew install iwyu
```
On Ubuntu you can install it via `sudo apt-get install iwyu`.
## Lint Free Code
Automated analysis tools like cppcheck and oclint can point out potential bugs. They also help ensure the code has a consistent style and that it avoids patterns that tend to confuse people.
@@ -12,6 +30,8 @@ Ultimately we want lint free code. However, at the moment a lot of cleanup is re
To make linting the code easy there are two make targets: `lint` and `lint-all`. The latter does just what the name implies. The former will lint any modified but not committed `*.cpp` files. If there is no uncommitted work it will lint the files in the most recent commit.
Fish has custom cppcheck rules in the file `.cppcheck.rule`. These help catch mistakes such as using `wcwidth()` rather than `fish_wcwidth()`. Please add a new rule if you find similar mistakes being made.
### Dealing With Lint Warnings
You are strongly encouraged to address a lint warning by refactoring the code, changing variable names, or whatever action is implied by the warning.
@@ -40,7 +60,9 @@ The following sections discuss the specific rules for the style that should be u
make style
```
before commiting your change. If you've already committed your changes that's okay since it will then check the files in the most recent commit. This can be useful after you've merged someone elses change and want to check that it's style is acceptable.
before commiting your change. That will run `git-clang-format` to rewrite just the lines you're modifying.
If you've already committed your changes that's okay since it will then check the files in the most recent commit. This can be useful after you've merged someone elses change and want to check that it's style is acceptable. However, in that case it will run `clang-format` to ensure the entire file, not just the lines modified by the commit, conform to the style.
If you want to check the style of the entire code base run
@@ -48,7 +70,40 @@ If you want to check the style of the entire code base run
make style-all
```
### Suppressing Reformatting of the Code
That command will refuse to restyle any files if you have uncommitted changes.
### Configuring Your Editor for Fish C++ Code
#### ViM
As of ViM 7.4 it does not recognize triple-slash comments as used by Doxygen and the OS X Xcode IDE to flag comments that explain the following C symbol. This means the `gq` key binding to reformat such comments doesn't behave as expected. You can fix that by adding the following to your vimrc:
```
autocmd Filetype c,cpp setlocal comments^=:///
```
If you use ViM I recommend the [vim-clang-format plugin](https://github.com/rhysd/vim-clang-format) by [@rhysd](https://github.com/rhysd).
You can also get ViM to provide reasonably correct behavior by installing
If you use Emacs: Install [fish-mode](https://github.com/wwwjfy/emacs-fish) (also available in melpa and melpa-stable) and `(setq-default indent-tabs-mode nil)` for it (via a hook or in `use-package`s ":init" block). It can also be made to run fish_indent via e.g.
If you have a good reason for doing so you can tell `clang-format` to not reformat a block of code by enclosing it in comments like this:
@@ -60,11 +115,11 @@ code to ignore
## Fish Script Style Guide
Fish scripts such as those in the *share/functions* and *tests* directories should be formatted using the `fish_indent` command.
1.Fish scripts such as those in the *share/functions* and *tests* directories should be formatted using the `fish_indent` command.
Function names should be all lowercase with undescores separating words. Private functions should begin with an underscore. The first word should be `fish` if the function is unique to fish.
1.Function names should be all lowercase with undescores separating words. Private functions should begin with an underscore. The first word should be `fish` if the function is unique to fish.
The first word of global variable names should generally be `fish` for public vars or `_fish` for private vars to minimize the possibility of name clashes with user defined vars.
1.The first word of global variable names should generally be `fish` for public vars or `_fish` for private vars to minimize the possibility of name clashes with user defined vars.
## C++ Style Guide
@@ -80,6 +135,8 @@ The first word of global variable names should generally be `fish` for public va
1. Comments should always use the C++ style; i.e., each line of the comment should begin with a `//` and should be limited to 100 characters. Comments that do not begin a line should be separated from the previous text by two spaces.
1. Comments that document the purpose of a function or class should begin with three slashes, `///`, so that OS X Xcode (and possibly other ideas) will extract the comment and show it in the "Quick Help" window when the cursor is on the symbol.
## Testing
The source code for fish includes a large collection of tests. If you are making any changes to fish, running these tests is highly recommended to make sure the behaviour remains consistent.
@@ -110,6 +167,51 @@ You'll receive an email when the tests are complete telling you whether or not a
You'll find the configuration used to control Travis in the `.travis.yml` file.
### Git hooks
Since developers sometimes forget to run the tests, it can be helpful to use git hooks (see githooks(5)) to automate it.
One possibility is a pre-push hook script like this one:
```sh
#!/bin/sh
#### A pre-push hook for the fish-shell project
# This will run the tests when a push to master is detected, and will stop that if the tests fail
# Save this as .git/hooks/pre-push and make it executable
protected_branch='master'
# Git gives us lines like "refs/heads/frombranch SOMESHA1 refs/heads/tobranch SOMESHA1"
# We're only interested in the branches
whileread from _ to _;do
if["x$to"="xrefs/heads/$protected_branch"];then
isprotected=1
fi
done
if["x$isprotected"= x1 ];then
echo"Running tests before push to master"
make test
RESULT=$?
if[$RESULT -ne 0];then
echo"Tests failed for a push to master, we can't let you do that" >&2
exit1
fi
fi
exit0
```
This will check if the push is to the master branch and, if it is, will run `make test` and only allow the push if that succeeds. In some circumstances it might be advisable to circumvent it with `git push --no-verify`, but usually that should not be necessary.
To install the hook, put it in .git/hooks/pre-push and make it executable.
### Coverity Scan
We use Coverity's static analysis tool which offers free access to open source projects. While access to the tool itself is
restricted, fish-shell organization members should know that they can login
[here with their GitHub account](https://scan.coverity.com/projects/fish-shell-fish-shell?tab=overview).
Currently, tests are triggered upon merging the `master` branch into `coverity_scan_master`.
Even if you are not a fish developer, you can keep an eye on our statistics there.
@@ -13,9 +13,9 @@ Detailed user documentation is available by running `help` within fish, and also
## Building
fish is written in a sane subset of C++98, with a few components from C++TR1. It builds successfully with g++ 4.2 or later, and with clang. It also will build as C++11.
fish requires a C++11 compiler. It builds successfully with g++ 4.8 or later, or with clang 3.3 or later.
fish can be built using autotools or Xcode. autoconf 2.60 or later is required to build from git versions, but is not required for releases.
fish can be built using autotools or Xcode. autoconf 2.60 or later, as well as automake 1.13 or later, are required to build from git versions. These are not required to build from released tarballs.
fish depends on a curses implementation, such as ncurses. The headers and libraries are required for building.
@@ -27,7 +27,7 @@ Building the documentation requires Doxygen 1.8.7 or newer.
### Autotools Build
autoconf [if building from Git]
autoreconf --no-recursive [if building from Git]
./configure
make [gmake on BSD]
sudo make install
@@ -64,9 +64,11 @@ fish requires a number of utilities to operate, which should be present on any U
Translation support requires the gettext program.
Usage output for builtin functions is generated on-demand from the installed manpages using `nroff` and `ul`.
Some optional features of fish, such as the manual page completion parser and the web configuration tool, require Python.
In order to generate completions from man pages compressed with either lzma or xz, you may need to install an extra Python package. Python versions prior to 2.6 are not supported. For Python versions 2.6 to 3.2 you need to install the module `backports.lzma`. How to install it depends on your system and how you installed Python. Most Linux distributions should include it as a package named `backports-lzma` (or similar). From version 3.3 onwards, Python already includes the required module.
In order to generate completions from man pages compressed with either lzma or xz, you may need to install an extra Python package. Python versions prior to 2.6 are not supported. To process lzma-compresed manpages, backports.lzma is needed for Python 3.2 or older. From version 3.3 onwards, Python already includes the required module.
## Packages for Linux
@@ -82,7 +84,7 @@ chsh will prompt you for your password, and change your default shell. Substitut
Use the following command if you didn't already add your fish path to /etc/shells.
echo /usr/local/bin/fish | sudo tee -a /etc/shells
echo /usr/local/bin/fish | sudo tee -a /etc/shells
To switch your default shell back, you can run:
@@ -90,6 +92,8 @@ To switch your default shell back, you can run:
Substitute /bin/bash with /bin/tcsh or /bin/zsh as appropriate.
You may need to logout/login for the change (chsh) to take effect.
This is the_ridiculous'fish s delightful fork of, fish friendly interactive shell. For more information, visit http://ridiculousfish.com/shell/ .
This installer will install fish, but will not modify your /etc/shells file or your default shell. I trust you know how to do that yourself if you care to!
\f0\fs30 \cf0 The fish shell is a smart and user friendly command line shell. For more information, visit {\field{\*\fldinst{HYPERLINK "http://fishshell.com"}}{\fldrslt http://fishshell.com}}.\
\f0\fs30 \cf0 Fish is a smart and user friendly command line shell. For more information, visit {\field{\*\fldinst{HYPERLINK "https://fishshell.com"}}{\fldrslt https://fishshell.com}}\
# This is used to skip use of tputs on ppc systems, since it seemed to
# be broken, at least on older debin-based systems. This is obviously
# not the right way to to detect whether this workaround should be
# used, since it catches far to many systems, but I do not have the
# hardware available to narrow this problem down, and in practice, it
# seems that tputs is never really needed.
#
AC_CANONICAL_TARGET
if test $target_cpu = powerpc; then
AC_DEFINE([TPUTS_KLUDGE],[1],[Evil kludge to get Power based machines to work])
fi
#
# Solaris-specific flags go here
#
AC_MSG_CHECKING([if we are under Solaris])
case $target_os in
solaris*)
AC_DEFINE( __EXTENSIONS__, 1, [Macro to enable additional prototypes under Solaris])
AC_MSG_RESULT(yes)
;;
*)
AC_MSG_RESULT(no)
;;
esac
#
# BSD-specific flags go here
#
AC_MSG_CHECKING([if we are under BSD])
case $target_os in
*bsd*)
AC_DEFINE( __BSD_VISIBLE, 1, [Macro to enable additional prototypes under BSD])
AC_DEFINE( _NETBSD_SOURCE, 1, [Macro to enable additional prototypes under BSD])
AC_MSG_RESULT(yes)
;;
*)
AC_MSG_RESULT(no)
;;
esac
#
# See if Linux procfs is present. This is used to get extra
# information about running processes.
@@ -331,22 +246,22 @@ esac
AC_CHECK_FILES([/proc/self/stat])
#
# This is ued to tell the wgetopt library to translate strings. This
# way wgetopt can be dropped into any project without requiring i18n.
#
AC_DEFINE(
[HAVE_TRANSLATE_H],
[1],
[Define to 1 if the wgettext function should be used for translating strings.]
)
# Disable curses macros that conflict with the STL
AC_DEFINE([NCURSES_NOMACROS], [1], [Define to 1 to disable ncurses macros that conflict with the STL])
AC_DEFINE([NOMACROS], [1], [Define to 1 to disable curses macros that conflict with the STL])
# Threading is excitingly broken on Solaris without adding -pthread to CXXFLAGS
# Only support GCC for now
dnl Ideally we would use the AX_PTHREAD macro here, but it's GPL3-licensed
dnl ACX_PTHREAD is way too old and seems to break the OS X build
dnl Both only check with AC_LANG(C) in any case
case $host_os in
solaris*)
CXXFLAGS="$CXXFLAGS -pthread"
CFLAGS="$CFLAGS -pthread"
;;
esac
#
# Check presense of various libraries. This is done on a per-binary
# level, since including various extra libraries in all binaries only
@@ -355,13 +270,11 @@ AC_DEFINE([NOMACROS], [1], [Define to 1 to disable curses macros that conflict w
#
# Check for os dependant libraries for all binaries.
AC_SEARCH_LIBS( connect, socket, , [AC_MSG_ERROR([Cannot find the socket library, needed to build this package.] )] )
AC_SEARCH_LIBS( nanosleep, rt, , [AC_MSG_ERROR([Cannot find the rt library, needed to build this package.] )] )
AC_SEARCH_LIBS( shm_open, rt, , [AC_MSG_ERROR([Cannot find the rt library, needed to build this package.] )] )
AC_SEARCH_LIBS( shm_open, rt, [AC_DEFINE([HAVE_SHM_OPEN], [1], [Define to 1 if the shm_open() function exists])] )
AC_SEARCH_LIBS( pthread_create, pthread, , [AC_MSG_ERROR([Cannot find the pthread library, needed to build this package.] )] )
AC_SEARCH_LIBS( setupterm, [ncurses tinfo curses], , [AC_MSG_ERROR([Could not find a curses implementation, needed to build fish. If this is Linux, try running 'sudo apt-get install libncurses5-dev' or 'sudo yum install ncurses-devel'])] )
AC_SEARCH_LIBS( [nan], [m], [AC_DEFINE( [HAVE_NAN], [1], [Define to 1 if you have the nan function])] )
The fish documentation has been updated to support Doxygen 1.8.7+, and while the main benefit of this change is extensive Markdown support, the addition of a fish lexicon and syntax filter, combined with semantic markup rules allows for automatic formatting enhancements across the HTML user_docs, the developer docs and the man pages.
The fish documentation has been updated to support Doxygen 1.8.7+, and while the main benefit of this change is extensive Markdown support, the addition of a fish lexicon and syntax filter, combined with semantic markup rules allows for automatic formatting enhancements across the HTML user_docs and man pages.
Initially my motivation was to fix a problem with long options ([Issue #1557](https://github.com/fish-shell/fish-shell/issues/1557) on GitHub), but as I worked on fixing the issue I realised there was an opportunity to simplify, reinforce and clarify the current documentation, hopefully making further contribution easier and cleaner, while allowing the documentation examples to presented more clearly with less author effort.
@@ -60,14 +60,10 @@ which is then transformed by Doxygen into an HTML version (`make doc`):
And a simple HTML version for the developer docs (`make doc`) and the LATEX/PDF manual (`make doc/refman.pdf`):
`echo hello world`
### Fonts
In older browsers, it was easy to set the fonts used for the three basic type styles (serif, sans-serif and monospace). Modern browsers have removed these options in their respective quests for simplification, assuming the content author will provide suitable styles for the content in the site's CSS, or the end user will provide overriding styles manually. Doxygen's default styling is very simple and most users will just accept this default.
@@ -154,21 +150,25 @@ The following can be used in \\fish blocks to render some fish scenarios. These
### Custom formatting tags
-`<s>`: auto\<s\>suggestion\</s\>.
-`<m>`: \<m\>Matched\</m\> items, such as tab completions.
-`<sm>`: Matched items \<sm\>searched\<sm\> for, like grep results.
-`<error>`: \<error\>This would be shown as an error.\</error\>
-`<asis>`: \<asis\>This test will not be parsed for fish markup.\</asis\>
-`<outp>`: \<outp\>This would be rendered as command/script output.\</outp\>
-`<bs>`: Render the contents with a preceding backslash. Useful when presenting output.
-`{{` and `}}`: Required when wanting curly braces in regular expression example.
```html
<u>: <u>These words are underlined.</u>
<s>: auto<s>suggestion</s>.
<m>: <m>Matched</m> items, such as tab completions.
<sm>: Matched items <sm>searched</sm> for, like grep results.
<bs>: Render the contents with a preceding backslash. Useful when presenting output.
<error>: <error>This would be shown as an error.</error>
<asis>: <asis>This text will not be parsed for fish markup.</asis>
<outp>: <outp>This would be rendered as command/script output.</outp>
{{ and }}: Required when wanting curly braces in regular expression example.
```
### Prompts and cursors
-`>_`: Display a basic prompt.
-`~>_`: Display a prompt with a the home directory as the current working directory.
-`___` (3 underscores): Display a cursor.
```html
>_: Display a basic prompt.
~>_: Display a prompt with a the home directory as the current working directory.
___ (3 underscores): Display a cursor.
```
### Keyboard shortcuts: @key{} and @cursor_key{}
@@ -250,15 +250,4 @@ end
# NOT PORTABLE! Paths would be need to be updated on other systems.
```
### Developer docs and LATEX/PDF output
- HTML developer docs tested on Ubuntu 14.04, CentOS 6.5 and Mac OS X 10.9.
- LATEX/PDF reference manual tested on Mac OS X 10.9 using MacTEX. PDF production returns an error (due to Doxygen's use of an outdated 'float' package), but manual PDF output is ok.
### Future changes
1. The documentation creation process would be better if it could be modularised further and moved out of the makefile into a number of supporting scripts. This would allow both the automake and Xcode build processes to use the documentation scripts directly.
2. Remove the Doxygen dependency entirely for the user documentation. This would be very acheivable now that the bulk of the documentation is in Markdown.
3. It would be useful to gauge what parts of the documentation are actually used by users. Judging by the amount of 'missing comment' errors during the developer docs build phase, this aspect of the docs has been rather neglected. If it is not longer used or useful, then this could change the future direction of the documentation and significantly streamline the process.
#### Author: Mark Griffiths [@GitHub](https://github.com/MarkGriffiths)
Abbreviations are user-defined character sequences or words that are replaced with longer phrases after they are entered. For example, a frequently-run command such as `git checkout` can be abbreviated to `gco`. After entering `gco` and pressing @key{Space} or @key{Enter}, the full text `git checkout` will appear in the command line.
Abbreviations are stored using universal variables. You can create abbreviations directly on the command line, and they will be saved automatically. Calling `abbr -a` in config.fish will lead to slightly worse startup performance.
Abbreviations are stored in a variable named `fish_user_abbreviations`. This is automatically created as a universal variable the first time an abbreviation is created. If you want your abbreviations to be private to a particular fish session you can put the following in your *~/.config/fish/config.fish* file before you define your first abbrevation:
\fish
if status --is-interactive
set -g fish_user_abbreviations
abbr --add first 'echo my first abbreviation'
abbr --add second 'echo my second abbreviation'
# etcetera
end
\endfish
You can create abbreviations directly on the command line and they will be saved automatically and made visible to other fish sessions if `fish_user_abbreviations` is a universal variable. If you keep the variable as universal, `abbr --add` statements in <a href="tutorial.html#tut_startup">config.fish</a> will do nothing but slow down startup slightly.
\subsection abbr-options Options
The following parameters are available:
- `-a WORD PHRASE` or `--add WORD PHRASE` Adds a new abbreviation, where WORD will be expanded to PHRASE.
- `-a WORD PHRASE` or `--add WORD PHRASE` Adds a new abbreviation, causing WORD to be expanded to PHRASE.
- `-r WORD NEW_WORD` or `--rename WORD NEW_WORD` Renames an abbreviation, from WORD to NEW_WORD.
- `-s` or `--show` Show all abbreviated words and their expanded phrases in a manner suitable for export and import.
@@ -35,6 +51,11 @@ abbr -a gco git checkout
\endfish
Add a new abbreviation where `gco` will be replaced with `git checkout`.
\fish
abbr -r gco gch
\endfish
Renames an existing abbreviation from `gco` to `gch`.
`alias` is a simple wrapper for the `function` builtin. It exists for backwards compatibility with Posix shells. For other uses, it is recommended to define a <a href='#function'>function</a>.
`alias` is a simple wrapper for the `function` builtin, which creates a function wrapping a command. It has similar syntax to POSIX shell `alias`. For other uses, it is recommended to define a <a href='#function'>function</a>.
`fish` does not keep track of which functions have been defined using `alias`. They must be erased using `functions -e`.
`fish` marks functions that have been created by `alias` by including the command used to create them in the function description. You can list `alias`-created functions by running `alias` without arguments. They must be erased using `functions -e`.
- `NAME` is the name of the alias
- `DEFINITION` is the actual command to execute. The string `$argv` will be appended.
You cannot create an alias to a function with the same name.
Note that spaces need to be escaped in the call to alias just like in the commandline _even inside the quotes_.
You cannot create an alias to a function with the same name. Note that spaces need to be escaped in the call to `alias` just like at the command line, _even inside quoted parts_.
\subsection alias-example Example
The following code will create `rmi`, which runs `rm` with additional arguments on every invocation.
\fish
alias rmi"rm -i"
alias rmi="rm -i"
# This is equivalent to entering the following function:
function rmi
function rmi --wraps rm --description 'alias rmi=rm -i'
rm -i $argv
end
# This needs to have the spaces escaped or "Chrome.app..." will be seen as an argument to "/Applications/Google":
alias chrome='/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome banana'
`and` is used to execute a command if the current exit status (as set by the previous command) is 0.
`and` statements may be used as part of the condition in an <a href="#if">`and`</a> or <a href="#while">`while`</a> block. See the documentation
for <a href="#if">`if`</a> and <a href="#while">`while`</a> for examples.
`and` statements may be used as part of the condition in an <a href="#if">`if`</a> or <a href="#while">`while`</a> block. See the documentation for <a href="#if">`if`</a> and <a href="#while">`while`</a> for examples.
`and` does not change the current exit status. The exit status of the last foreground command to exit can always be accessed using the <a href="index.html#variables-status">$status</a> variable.
\subsection and-example Example
The following code runs the `make` command to build a program. If the build succeeds, `make`'s exit status is 0, and the program is installed. If either step fails, the exit status is 1, and `make clean` is run, which removes the files created by the build process.
@@ -13,7 +13,7 @@ The following options are available:
- `-s` or `--search` returns the name of the disk file that would be executed, or nothing if no file with the specified name could be found in the `$PATH`.
With the `-s` option, `command` treats every argument as a separate command to look up and sets the exit status to 0 if any of the specified commands were found, or 1 if no commands could be found.
With the `-s` option, `command` treats every argument as a separate command to look up and sets the exit status to 0 if any of the specified commands were found, or 1 if no commands could be found. Additionally passing a `-q` or `--quiet` option prevents any paths from being printed, like the `type -q`, for testing only the exit status.
For basic compatibility with POSIX `command`, the `-v` flag is recognized as an alias for `-s`.
- `-x` or `--exclusive` implies both `-r` and `-f`.
- `-w WRAPPED_COMMAND` or `--wraps=WRAPPED_COMMAND` causes the specified command to inherit completions from the wrapped command (See blow for details).
- `-w WRAPPED_COMMAND` or `--wraps=WRAPPED_COMMAND` causes the specified command to inherit completions from the wrapped command (See below for details).
- `-n` or `--condition` specifies a shell command that must return 0 if the completion is to be used. This makes it possible to specify completions that should only be used in some cases.
@@ -61,6 +61,10 @@ the fish manual.
- `-C` or `--do-complete` with no argument makes complete try to find all possible completions for the current command line buffer. If the shell is not in interactive mode, an error is returned.
- `-A` and `--authoritative` no longer do anything and are silently ignored.
- `-u` and `--unauthoritative` no longer do anything and are silently ignored.
Command specific tab-completions in `fish` are based on the notion of options and arguments. An option is a parameter which begins with a hyphen, such as '`-h`', '`-help`' or '`--help`'. Arguments are parameters that do not begin with a hyphen. Fish recognizes three styles of options, the same styles as the GNU version of the getopt library. These styles are:
- Short options, like '`-a`'. Short options are a single character long, are preceded by a single hyphen and may be grouped together (like '`-la`', which is equivalent to '`-l -a`'). Option arguments may be specified in the following parameter ('`-w 32`') or by appending the option with the value ('`-w32`').
- <a href='#faq-greeting'>How do I change the greeting message?</a>
- <a href='#faq-history'>Why doesn't history substitution ("!$" etc.) work?</a>
- <a href='#faq-uninstalling'>How do I uninstall fish?</a>
- <a href='#faq-third-party'>Where can I find extra tools for fish?</a>
\htmlonly[block]
</div>
@@ -220,6 +221,18 @@ rm -f fish fish_indent
Fish reserves the <a href="http://www.unicode.org/faq/private_use.html">Unicode private-use character range</a> from U+F600 thru U+F73F for internal use. Any attempt to feed characters in that range to fish will result in them being replaced by the Unicode "replacement character" U+FFFD. This includes both interactive input as well as any file read by fish (but not programs run by fish).
<hr>
\section faq-third-party Where can I find extra tools for fish?
The fish user community extends fish in unique and useful ways via scripts that aren't always appropriate for bundling with the fish package. Typically because they solve a niche problem unlikely to appeal to a broad audience. You can find those extensions, including prompts, themes and useful functions, in various third-party repositories. These include:
This is not an exhaustive list and the fish project has no opinion regarding the merits of the repositories listed above or the scripts found therein. We mention these only because you may find within them a solution to a need you have such as supporting the `&&` and `||` operators or improved integration with other tools that you use.
`fg` brings the specified <a href="index.html#syntax-job-control">job</a> to the foreground, resuming it if it is stopped. While a foreground job is executed, fish is suspended. If no job is specified, the last job to be used is put in the foreground. If PID is specified, the job with the specified group ID is put in the foreground.
The PID of the desired process is usually found by using <a href="index.html#expand-process">process expansion</a>.
The PID of the desired process is usually found by using <a href="index.html#expand-process">process expansion</a>. Fish is capable of expanding far more than just the numeric PID, including referencing itself and finding PIDs by name.
@@ -25,4 +25,6 @@ The following options are available:
- `-v` or `--version` display version and exit
- `-D` or `--debug-stack-frames=DEBUG_LEVEL` specify how many stack frames to display when debug messages are written. The default is zero. A value of 3 or 4 is usually sufficient to gain insight into how a given debug call was reached but you can specify a value up to 128.
The fish exit status is generally the exit status of the last foreground command. If fish is exiting because of a parse error, the exit status is 127.
`fish_indent` is used to indent a piece of fish code. `fish_indent` reads commands from standard input and outputs them to standard output.
`fish_indent` is used to indent a piece of fish code. `fish_indent` reads commands from standard input and outputs them to standard output or a specified file.
The following options are available:
- `-d` or `--dump` dumps information about the parsed fish commands to stderr
- `-w` or `--write` indents a specified file and immediately writes to that file.
- `-i` or `--no-indent` do not indent commands; only reformat to one job per line
- `-i` or `--no-indent` do not indent commands; only reformat to one job per line.
- `-v` or `--version` displays the current fish version and then exits
- `-v` or `--version` displays the current fish version and then exits.
- `--ansi` colorizes the output using ANSI escape sequences, appropriate for the current $TERM, using the colors defined in the environment (such as `$fish_color_command`).
- `--html` outputs HTML, which supports syntax highlighting if the appropriate CSS is defined. The CSS class names are the same as the variable names, such as `fish_color_command`
- `--html` outputs HTML, which supports syntax highlighting if the appropriate CSS is defined. The CSS class names are the same as the variable names, such as `fish_color_command`.
- `-d` or `--debug-level=DEBUG_LEVEL` enables debug output and specifies a verbosity level (like `fish -d`). Defaults to 0.
- `-D` or `--debug-stack-frames=DEBUG_LEVEL` specify how many stack frames to display when debug messages are written. The default is zero. A value of 3 or 4 is usually sufficient to gain insight into how a given debug call was reached but you can specify a value up to 128.
- `--dump-parse-tree` dumps information about the parsed statements to stderr. This is likely to be of interest only to people working on the fish source code.
`fish_key_reader` is used to study input received from the terminal and can help with key binds. The program is interactive and works on standard input. Individual characters themselves and their hexadecimal values are displayed.
The tool will write an example `bind` command matching the character sequence captured to stdout. If the character sequence matches a special key name (see `bind --key-names`), both `bind CHARS ...` and `bind -k KEYNAME ...` usage will be shown. Additional details about the characters received, such as the delay between chars, are written to stderr.
The following options are available:
- `-c` or `--continuous` begins a session where multiple key sequences can be inspected. By default the program exits after capturing a single key sequence.
- `-d` or `--debug-level=DEBUG_LEVEL` enables debug output and specifies a verbosity level (like `fish -d`). Defaults to 0.
- `-D` or `--debug-stack-frames=DEBUG_LEVEL` specify how many stack frames to display when debug messages are written. The default is zero. A value of 3 or 4 is usually sufficient to gain insight into how a given debug call was reached but you can specify a value up to 128.
The delay in milliseconds since the previous character was received is included in the diagnostic information written to stderr. This information may be useful to determine the optimal `fish_escape_delay_ms` setting or learn the amount of lag introduced by tools like `ssh`, `mosh` or `tmux`.
`fish_key_reader` intentionally disables handling of many signals. To terminate `fish_key_reader` in `--continuous` mode do:
\section fish_realpath fish_realpath - Convert a path to an absolute path without symlinks
\subsection fish_realpath-synopsis Synopsis
\fish{synopsis}
fish_realpath path
\endfish
\subsection fish_realpath-description Description
This is an implementation of the external realpath command that doesn't support any options. It's meant to be used only by scripts which need to be portable. In general scripts shouldn't invoke this directly. They should just use `realpath` which will fallback to this builtin if an external command cannot be found.
If the path is invalid no translated path will be written to stdout and an error will be reported.
This implementation behaves like the GNU command being invoked with `--canonicalize-existing`.
@@ -31,7 +31,7 @@ The following options are available:
- `-S` or `--no-scope-shadowing` allows the function to access the variables of calling functions. Normally, any variables inside the function that have the same name as variables from the calling function are "shadowed", and their contents is independent of the calling function.
- `-V` or `--inherit-variable NAME` snapshots the value of the variable `NAME` and defines a local variable with that same name and value when the function is executed.
- `-V` or `--inherit-variable NAME` snapshots the value of the variable `NAME` and defines a local variable with that same name and value when the function is defined. This is similar to a closure in other languages like Python but a bit different. Note the word "snapshot" in the first sentence. If you change the value of the variable after defining the function, even if you do so in the same scope (typically another function) the new value will not be used by the function you just created using this option. See the `function notify` example below for how this might be used.
If the user enters any additional arguments after the function, they are inserted into the environment <a href="index.html#variables-arrays">variable array</a> `$argv`. If the `--argument-names` option is provided, the arguments are also assigned to names specified in that option.
@@ -13,6 +13,8 @@ If a `SECTION` is specified, the help for that command is shown.
If the BROWSER environment variable is set, it will be used to display the documentation. Otherwise, fish will search for a suitable browser.
If you prefer to use a different browser (other than as described above) for fish help, you can set the fish_help_browser variable. This variable may be set as an array, where the first element is the browser command and the rest are browser options.
Note that most builtin commands display their help in the terminal when given the `--help` option.
`history` is used to list, search and delete the history of commands used.
`history` is used to search, delete, and otherwise manipulate the history of interactive commands.
The following operations (sub-commands) are available:
- `search` returns history items matching the search string. If no search string is provided it returns all history items. This is the default operation if no other operation is specified. You only have to explicitly say `history search` if you wish to search for one of the subcommands. The `--contains` search option will be used if you don't specify a different search option. Entries are ordered newest to oldest. If stdout is attached to a tty the output will be piped through your pager by the history function. The history builtin simply writes the results to stdout.
- `delete` deletes history items. Without the `--prefix` or `--contains` options, the exact match of the specified text will be deleted. If you don't specify `--exact` a prompt will be displayed before any items are deleted asking you which entries are to be deleted. You can enter the word "all" to delete all matching entries. You can enter a single ID (the number in square brackets) to delete just that single entry. You can enter more than one ID separated by a space to delete multiple entries. Just press [enter] to not delete anything. Note that the interactive delete behavior is a feature of the history function. The history builtin only supports `--exact --case-sensitive` deletion.
- `merge` immediately incorporates history changes from other sessions. Ordinarily `fish` ignores history changes from sessions started after the current one. This command applies those changes immediately.
- `save` immediately writes all changes to the history file. The shell automatically saves the history file; this option is provided for internal use and should not normally need to be used by the user.
- `clear` clears the history file. A prompt is displayed before the history is erased asking you to confirm you really want to clear all history unless `builtin history` is used.
The following options are available:
- `--merge` immediately incorporates history changes from other sessions. Ordinarily `fish` ignores history changes from sessions started after the current one. This command applies those changes immediately.
- `--save` saves all changes in the history file. The shell automatically saves the history file; this option is provided for internal use.
These flags can appear before or immediately after one of the sub-commands listed above.
- `--clear` clears the history file. A prompt is displayed before the history is erased.
- `-C` or `--case-sensitive` does a case-sensitive search. The default is case-insensitive. Note that prior to fish 2.4.0 the default was case-sensitive.
- `--search` returns history items in keeping with the `--prefix` or `--contains` options.
- `-c` or `--contains` searches or deletes items in the history that contain the specified text string. This is the default for the `--search` flag. This is not currently supported by the `--delete` flag.
- `--delete` deletes history items.
- `-e` or `--exact` searches or deletes items in the history that exactly match the specified text string. This is the default for the `--delete` flag. Note that the match is case-insensitive by default. If you really want an exact match, including letter case, you must use the `-C` or `--case-sensitive` flag.
- `--prefix` searches or deletes items in the history that begin with the specified text string.
- `-p` or `--prefix` searches or deletes items in the history that begin with the specified text string. This is not currently supported by the `--delete` flag.
- `--contains` searches or deletes items in the history that contain the specified text string.
- `-t` or `--show-time` prepends each history entry with the date and time the entry was recorded . By default it uses the strftime format `# %c%n`. You can specify another format; e.g., `--show-time='%Y-%m-%d %H:%M:%S '` or `--show-time='%a%I%p'`. The short option, `-t` doesn't accept a stftime format string; it only uses the default format. Any strftime format is allowed, including `%s` to get the raw UNIX seconds since the epoch. Note that `--with-time` is also allowed but is deprecated and will be removed at a future date.
If `--search` is specified without `--contains` or `--prefix`, `--contains` will be assumed.
- `-z` or `--null` causes history entries written by the search operations to be terminated by a NUL character rather than a newline. This allows the output to be processed by `read -z` to correctly handle multiline history entries.
If `--delete` is specified without `--contains` or `--prefix`, only a history item which exactly matches the parameter will be erased. No prompt will be given. If `--delete` is specified with either of these parameters, an interactive prompt will be displayed before any items are deleted.
- `-<number>` `-n <number>` or `--max=<number>` limits the matched history items to the first "n" matching entries. This is only valid for `history search`.
- `-h` or `--help` display help for this command.
\subsection history-examples Example
@@ -40,5 +56,12 @@ history --search --contains "foo"
# Outputs a list of all previous commands containing the string "foo".
history --delete --prefix "foo"
# Interactively deletes the record of previous commands which start with "foo".
# Interactively deletes commands which start with "foo" from the history.
# You can select more than one entry by entering their IDs seperated by a space.
\endfish
\subsection history-notes Notes
If you specify both `--prefix` and `--contains` the last flag seen is used.
Note that for backwards compatibility each subcommand can also be specified as a long option. For example, rather than `history search` you can type `history --search`. Those long options are deprecated and will be removed in a future release.
`if` will execute the command `CONDITION`. If the condition's exit status is 0, the commands `COMMANDS_TRUE` will execute. If the exit status is not 0 and `else` is given, `COMMANDS_FALSE` will be executed.
You can use <a href="#and">`and`</a> or <a href="#and">`or`</a> in the condition. See the second example below.
You can use <a href="#and">`and`</a> or <a href="#or">`or`</a> in the condition. See the second example below.
The exit status of the last foreground command to exit can always be accessed using the <a href="index.html#variables-status">$status</a> variable.
\subsection if-example Example
The following code will print `foo.txt exists` if the file foo.txt exists and is a regular file, otherwise it will print `bar.txt exists` if the file bar.txt exists and is a regular file, otherwise it will print `foo.txt and bar.txt do not exist`.
@@ -146,6 +146,8 @@ An example of a file redirection is `echo hello > output.txt`, which directs the
- To append standard output to a file, write `>>DESTINATION_FILE`
- To append standard error to a file, write `^^DESTINATION_FILE`
- To not overwrite ("clobber") an existing file, write '>?DESTINATION' or '^?DESTINATION'
`DESTINATION` can be one of the following:
- A filename. The output will be written to the specified file.
@@ -238,6 +240,8 @@ There are a few important things that need to be noted about aliases:
- If the alias has the same name as the aliased command, it is necessary to prefix the call to the program with `command` in order to tell fish that the function should not call itself, but rather a command with the same name. Failing to do so will cause infinite recursion bugs.
- Autoloading isn't applicable to aliases. Since, by definition, the function is created at the time the alias command is executed. You cannot autoload aliases.
To easily create a function of this form, you can use the <a href="commands.html#alias">alias</a> command.
@@ -261,6 +265,8 @@ It is very important that function definition files only contain the definition
Autoloading also won't work for <a href=#event>event handlers</a>, since fish cannot know that a function is supposed to be executed when an event occurs when it hasn't yet loaded the function. See the <a href=#event>event handlers</a> section for more information.
Autoloading is not applicable to functions created by the `alias` command. For functions simple enough that you prefer to use the `alias` command to define them you'll need to put those commands in your `~/.config/fish/config.fish` script or some other script run when the shell starts.
If you are developing another program, you may wish to install functions which are available for all users of the fish shell on a system. They can be installed to the "vendor" functions directory. As this path may vary from system to system, the `pkgconfig` framework should be used to discover this path with the output of `pkg-config --variable functionsdir fish`.
@@ -504,7 +510,7 @@ A dollar sign followed by a string of characters is expanded into the value of t
Undefined and empty variables expand to nothing.
To separate a variable name from text it should immediately be followed by, encase the variable within quotes.
To separate a variable name from text encase the variable within double-quotes or braces.
Examples:
\fish
@@ -522,7 +528,7 @@ echo The plural of $WORD is {$WORD}s
Note that without the quotes or braces, fish will try to expand a variable called `$WORDs`, which may not exist.
The latter syntax `{$WORD}` works by exploiting <a href="#expand-brace">brace expansion</a>; care should be taken with array variables and undefined variables, as these expand as a <a href="#cartesian-product">cartesian product</a>, so undefined variables eliminate the string.
The latter syntax `{$WORD}` works by exploiting <a href="#expand-brace">brace expansion</a>; care should be taken with zero-element array variables and undefined variables, as these expand as a <a href="#cartesian-product">cartesian product</a>, so they eliminate the string.
Variable expansion is the only type of expansion performed on double quoted strings. There is, however, an important difference in how variables are expanded when quoted and when unquoted. An unquoted variable expansion will result in a variable number of arguments. For example, if the variable `$foo` has zero elements or is undefined, the argument `$foo` will expand to zero elements. If the variable $foo is an array of five elements, the argument `$foo` will expand to five elements. When quoted, like `"$foo"`, a variable expansion will always result in exactly one argument. Undefined variables will expand to the empty string, and array variables will be concatenated using the space character.
@@ -637,7 +643,7 @@ This form of expansion is useful for commands like kill and fg, which take proce
Example:
`fg %ema` will search for a process whose command line begins with the letters 'ema', such as emacs, and if found, put it in the foreground.
`fg %%ema` will search for a process whose command line begins with the letters 'ema', such as emacs, and if found, put it in the foreground.
`kill -s SIGINT %3` will send the SIGINT signal to the job with job ID 3.
@@ -811,7 +817,7 @@ The user can change the settings of `fish` by changing the values of certain var
- `BROWSER`, the user's preferred web browser. If this variable is set, fish will use the specified browser instead of the system default browser to display the fish documentation.
- `CDPATH`, an array of directories in which to search for the new directory for the `cd` builtin. By default, the fish configuration defines `CDPATH` to be a universal variable with the values `.` and `~`.
- `CDPATH`, an array of directories in which to search for the new directory for the `cd` builtin.
- `LANG`, `LC_ALL`, `LC_COLLATE`, `LC_CTYPE`, `LC_MESSAGES`, `LC_MONETARY`, `LC_NUMERIC` and `LC_TIME` set the language option for the shell and subprograms. See the section <a href='#variables-locale'>Locale variables</a> for more information.
@@ -841,6 +847,14 @@ The user can change the settings of `fish` by changing the values of certain var
- `CMD_DURATION`, the runtime of the last command in milliseconds.
- `FISH_VERSION`, the version of the currently running fish
- `COLUMNS`, the current width of the terminal
- `LINES`, the current height of the terminal
- `SHLVL`, the level of nesting of shells
The names of these variables are mostly derived from the csh family of shells and differ from the ones used by Bourne style shells such as bash.
Variables whose name are in uppercase are exported to the commands started by fish, while those in lowercase are not exported. This rule is not enforced by fish, but it is good coding practice to use casing to distinguish between exported and unexported variables. `fish` also uses several variables internally. Such variables are prefixed with the string `__FISH` or `__fish.` These should never be used by the user. Changing their value may break fish.
@@ -855,6 +869,8 @@ If `fish` encounters a problem while executing a command, the status variable ma
- 1 is the generally the exit status from fish builtin commands if they were supplied with invalid arguments
- 123 means that the command was not executed because the command name contained invalid characters
- 124 means that the command was not executed because none of the wildcards in the command produced any matches
- 125 means that while an executable with the specified name was located, the operating system could not actually execute the command
@@ -943,54 +959,73 @@ For a list of all builtins, functions and commands shipped with fish, see the <a
The `fish` editor features copy and paste, a searchable history and many editor functions that can be bound to special keyboard shortcuts.
Similar to bash, fish has Emacs and Vi editing modes. The default editing mode is Emacs. You can switch to Vi mode with `fish_vi_key_bindings` and switch back with `fish_default_key_bindings`.
Similar to bash, fish has Emacs and Vi editing modes. The default editing mode is Emacs. You can switch to Vi mode with `fish_vi_key_bindings` and switch back with `fish_default_key_bindings`. You can also make your own key bindings by creating a function and setting $fish_key_bindings to its name. For example:
\fish
function hybrid_bindings --description "Vi-style bindings that inherit emacs-style bindings in all modes"
for mode in default insert visual
fish_default_key_bindings -M $mode
end
fish_vi_key_bindings --no-erase
end
set -g fish_key_bindings hybrid_bindings
\endfish
\subsection emacs-mode Emacs mode commands
\subsection shared-binds Shared bindings
Some bindings are shared between emacs- and vi-mode because they aren't text editing bindings or because what Vi/Vim does for a particular key doesn't make sense for a shell.
- @key{Tab} <a href="#completion">completes</a> the current token. @key{Shift, Tab} completes the current token and starts the pager's search mode.
- @key{Home} or @key{Control,A} moves the cursor to the beginning of the line.
- @key{End} or @key{Control,E} moves to the end of line. If the cursor is already at the end of the line, and an autosuggestion is available, @key{End} or @key{Control,E} accepts the autosuggestion.
- @cursor_key{←,Left} (or @key{Control,B}) and @cursor_key{→,Right} (or @key{Control,F}) move the cursor left or right by one character. If the cursor is already at the end of the line, and an autosuggestion is available, the @cursor_key{→,Right} key and the @key{Control,F} combination accept the suggestion.
- @key{Alt,←,Left} and @key{Alt,→,Right} move the cursor one word left or right, or moves forward/backward in the directory history if the command line is empty. If the cursor is already at the end of the line, and an autosuggestion is available, @key{Alt,→,Right} (or @key{Alt,F}) accepts the first word in the suggestion.
- @cursor_key{↑,Up} and @cursor_key{↓,Down} search the command history for the previous/next command containing the string that was specified on the commandline before the search was started. If the commandline was empty when the search started, all commands match. See the <a href='#history'>history</a> section for more information on history searching.
- @key{Alt,↑,Up} and @key{Alt,↓,Down} search the command history for the previous/next token containing the token under the cursor before the search was started. If the commandline was not on a token when the search started, all tokens match. See the <a href='#history'>history</a> section for more information on history searching.
- @key{Delete} and @key{Backspace} removes one character forwards or backwards respectively.
- @key{Control,C} deletes the entire line.
- @key{Control,C} cancels the entire line.
- @key{Control,D} delete one character to the right of the cursor. If the command line is empty, @key{Control,D} will exit fish.
- @key{Control,K} moves contents from the cursor to the end of line to the <a href="#killring">killring</a>.
- @key{Control,U} moves contents from the beginning of line to the cursor to the <a href="#killring">killring</a>.
- @key{Control,L} clears and repaints the screen.
- @key{Control,W} moves the previous path component (everything up to the previous "/") to the <a href="#killring">killring</a>.
- @key{Alt,D} moves the next word to the <a href="#killring">killring</a>.
- @key{Control,X} copies the current buffer to the system's clipboard, @key{Control,V} inserts the clipboard contents.
- @key{Alt,W} prints a short description of the command under the cursor.
- @key{Alt,d} moves the next word to the <a href="#killring">killring</a>.
- @key{Alt,L} lists the contents of the current directory, unless the cursor is over a directory argument, in which case the contents of that directory will be listed.
- @key{Alt,h} (or @key{F1}) shows the manual page for the current command, if one exists.
- @key{Alt,P} adds the string '`| less;`' to the end of the job under the cursor. The result is that the output of the command will be paged.
- @key{Alt,l} lists the contents of the current directory, unless the cursor is over a directory argument, in which case the contents of that directory will be listed.
- @key{Alt,C} capitalizes the current word.
- @key{Alt,p} adds the string '`| less;`' to the end of the job under the cursor. The result is that the output of the command will be paged.
- @key{Alt,U} makes the current word uppercase.
- @key{Alt,w} prints a short description of the command under the cursor.
- @key{Alt,H} (or @key{F1}) shows the manual page for the current command, if one exists.
- @key{Alt,e} edit the current command line in an external editor. The editor is chosen from the first available of the `$VISUAL` or `$EDITOR` variables.
- @key{Control, t} transposes the last two characters
- @key{Alt,v} Same as @key{Alt,e}.
\subsection emacs-mode Emacs mode commands
- @key{Home} or @key{Control,A} moves the cursor to the beginning of the line.
- @key{End} or @key{Control,E} moves to the end of line. If the cursor is already at the end of the line, and an autosuggestion is available, @key{End} or @key{Control,E} accepts the autosuggestion.
- @cursor_key{←,Left} (or @key{Control,B}) and @cursor_key{→,Right} (or @key{Control,F}) move the cursor left or right by one character. If the cursor is already at the end of the line, and an autosuggestion is available, the @cursor_key{→,Right} key and the @key{Control,F} combination accept the suggestion.
- @key{Delete} and @key{Backspace} removes one character forwards or backwards respectively.
- @key{Control,K} moves contents from the cursor to the end of line to the <a href="#killring">killring</a>.
- @key{Alt,c} capitalizes the current word.
- @key{Alt,u} makes the current word uppercase.
- @key{Control,t} transposes the last two characters
- @key{Alt,t} transposes the last two words
@@ -1000,7 +1035,22 @@ You can change these key bindings using the <a href="commands.html#bind">bind</a
\subsection vi-mode Vi mode commands
Vi mode allows for the use of Vi-like commands at the prompt. Initially, <a href="#vi-mode-insert">insert mode</a> is active. @key{Escape} enters <a href="#vi-mode-command">command mode</a>. The commands available in command, insert and visual mode are described below. Vi mode builds on top of <a href="#emacs-mode">Emacs mode</a>, so all keybindings mentioned there that do not contradict the ones mentioned here also work.
Vi mode allows for the use of Vi-like commands at the prompt. Initially, <a href="#vi-mode-insert">insert mode</a> is active. @key{Escape} enters <a href="#vi-mode-command">command mode</a>. The commands available in command, insert and visual mode are described below. Vi mode shares <a href="#shared-binds">some bindings</a> with <a href="#emacs-mode">Emacs mode</a>.
It is also possible to add all emacs-mode bindings to vi-mode by using something like
\fish
function fish_user_key_bindings
# Execute this once per mode that emacs bindings should be used in
fish_default_key_bindings -M insert
# Without an argument, fish_vi_key_bindings will default to
# resetting all bindings.
# The argument specifies the initial mode (insert, "default" or visual).
fish_vi_key_bindings insert
end
\endfish
When in vi-mode, the <a href="fish_mode_prompt.html">`fish_mode_prompt`</a> function will display a mode indicator to the left of the prompt. The `fish_vi_cursor` function will be used to change the cursor's shape depending on the mode in supported terminals. To disable this feature, override it with an empty function. To display the mode elsewhere (like in your right prompt), use the output of the `fish_default_mode_prompt` function.
\subsubsection vi-mode-command Command mode
@@ -1030,21 +1080,13 @@ Command mode is also known as normal mode.
- @key{[} and @key{]} search the command history for the previous/next token containing the token under the cursor before the search was started. See the <a href='#history'>history</a> section for more information on history searching.
- @key{Control,C} deletes the entire line.
- @key{Backspace} moves the cursor left.
\subsubsection vi-mode-insert Insert mode
- @key{Tab} <a href="#completion">completes</a> the current token.
- @key{Escape} or @key{Control,C} enters <a href="#vi-mode-command">command mode</a>.
- @cursor_key{↑,Up} and @cursor_key{↓,Down} search the command history. See the <a href='#history'>history</a> section for more information on history searching.
- @key{Control,W} moves the previous word to the <a href="#killring">killring</a>.
- @key{Control,U} moves contents from the beginning of line to the cursor to the <a href="#killring">killring</a>.
- @key{Control,x} moves the cursor to the end of the line. If an autosuggestion is available, it will be accepted completely.
- @key{Backspace} removes one character to the left.
\subsubsection vi-mode-visual Visual mode
@@ -1060,9 +1102,6 @@ Command mode is also known as normal mode.
`fish` uses an Emacs style kill ring for copy and paste functionality. Use @key{Control,K} to cut from the current cursor position to the end of the line. The string that is cut (a.k.a. killed) is inserted into a linked list of kills, called the kill ring. To paste the latest value from the kill ring use @key{Control,Y}. After pasting, use @key{Alt,Y} to rotate to the previous kill.
If the environment variable `DISPLAY` is set and the `xsel` program is installed, `fish` will try to connect to the X Windows server specified by this variable, and use the clipboard on the X server for copying and pasting.
\subsection history-search Searchable history
After a command has been entered, it is inserted at the end of a history list. Any duplicate history items are automatically removed. By pressing the up and down keys, the user can search forwards and backwards in the history. If the current command line is not empty when starting a history search, only the commands containing the string entered into the command line are shown.
@@ -1073,7 +1112,7 @@ History searches can be aborted by pressing the escape key.
Prefixing the commandline with a space will prevent the entire line from being stored in the history.
The history is stored in the file `~/.config/fish/fish_history`.
The history is stored in the file `~/.local/share/fish/fish_history` (or `$XDG_DATA_HOME/fish/fish_history` if that variable is set).
Examples:
@@ -1110,15 +1149,15 @@ Note that functions cannot be started in the background. Functions that are stop
\section initialization Initialization files
On startup, Fish evaluates a number of configuration files, which can be used to control the behavior of the shell.
On startup, Fish evaluates a number of configuration files, which can be used to control the behavior of the shell. The location of these configuration variables is controlled by a number of environment variables, and their default or usual location is given below.
Configuration files are evaluated in the following order:
- Configuration shipped with fish, which should not be edited, usually `/usr/share/fish/config.fish`.
- System-wide configuration files, where administrators can include initialization that should be run for all users on the system - similar to `/etc/profile` for POSIX-style shells - usually `/etc/fish/config.fish`;
- Configuration shipped with fish, which should not be edited, in `$__fish_datadir/config.fish` (usually `/usr/share/fish/config.fish`).
- System-wide configuration files, where administrators can include initialization that should be run for all users on the system - similar to `/etc/profile` for POSIX-style shells - in `$__fish_sysconfdir` (usually `/etc/fish/config.fish`);
- Configuration snippets in files ending in `.fish`, in the directories:
- `/usr/share/fish/vendor_conf.d` (set at compile time; by default, `$__fish_datadir/conf.d`)
If there are multiple files with the same name in these directories, only the first will be executed.
@@ -1126,7 +1165,7 @@ Configuration files are evaluated in the following order:
These paths are controlled by parameters set at build, install, or run time, and may vary from the defaults listed above.
This wide search may be confusing. If you are unsure, use `~/.config/fish/config.fish`.
This wide search may be confusing. If you are unsure where to put your own customisations, use `~/.config/fish/config.fish`.
These files are all executed on the startup of every shell. If you want to run a command only on starting an interactive shell, use the exit status of the command `status --is-interactive` to determine if the shell is interactive. If you want to run a command only when using a login shell, use `status --is-login` instead. This will speed up the starting of non-interactive or non-login shells.
@@ -1138,7 +1177,7 @@ If you want to add the directory `~/linux/bin` to your PATH variable when using
\fish
if status --is-login
set PATH $PATH ~/linux/bin
set -x PATH $PATH ~/linux/bin
end
\endfish
@@ -1192,6 +1231,10 @@ function fish_title
end
\endfish
\subsection prompt Programmable prompt
When fish waits for input, it will display a prompt by evaluating the `fish_prompt` and `fish_right_prompt` functions. The output of the former is displayed on the left and the latter's output on the right side of the terminal. The output of `fish_mode_prompt` will be prepended on the left, though the default function only does this when in <a href="index.html#vi-mode">vi-mode</a>.
\subsection greeting Configurable greeting
If a function named `fish_greeting` exists, it will be run when entering interactive mode. Otherwise, if an environment variable named `fish_greeting` exists, it will be printed.
@@ -134,9 +134,9 @@ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
----
## License for wcslcat and wcslcpy, and code derived from tmux
## License for wcslcpy and code derived from tmux
`fish` also contains small amounts of code under the OpenBSD license, namely versions of the two functions strlcat and strlcpy, modified for use with wide character strings. This code is copyrighted by Todd C. Miller (1998). It also contains code from [tmux](http://tmux.sourceforge.net), copyrighted by Nicholas Marriott <nicm@users.sourceforge.net> (2007), and made available under an identical license.
`fish` also contains small amounts of code under the OpenBSD license, namely a version of the function strlcpy, modified for use with wide character strings. This code is copyrighted by Todd C. Miller (1998). It also contains code from [tmux](http://tmux.sourceforge.net), copyrighted by Nicholas Marriott <nicm@users.sourceforge.net> (2007), and made available under an identical license.
The OpenBSD license is included below.
@@ -320,6 +320,38 @@ Permission to use, copy, modify, and/or distribute this software for any purpose
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
----
## License for flock
`fish` also contains small amounts of code from NetBSD, namely the `flock` fallback function. This code is copyright 2001 The NetBSD Foundation, Inc., and derived from software contributed to The NetBSD Foundation by Todd Vierling.
The NetBSD license follows.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
\section math math - Perform mathematics calculations
\subsection math-synopsis Synopsis
\fish{synopsis}
math EXPRESSION
math [-sN] EXPRESSION
\endfish
\subsection math-description Description
@@ -12,9 +11,26 @@ math EXPRESSION
For a description of the syntax supported by math, see the manual for the bc program. Keep in mind that parameter expansion takes place on any expressions before they are evaluated. This can be very useful in order to perform calculations involving shell variables or the output of command substitutions, but it also means that parenthesis have to be escaped.
The following options are available:
- `-sN` Sets the scale of the result. `N` must be an integer and defaults to zero. This simply sets bc's `scale` variable to the provided value. Note that you cannot put a space between `-s` and `N`.
\subsection return-values Return Values
If invalid options or no expression is provided the return `status` is two. If the expression is invalid the return `status` is three. If bc returns a result of `0` (literally, not `0.0` or similar variants) the return `status` is one otherwise it's zero.
\subsection math-example Examples
`math 1+1` outputs 2.
`math $status-128` outputs the numerical exit status of the last command minus 128.
`math 10 / 6` outputs `1`.
`math -s0 10.0 / 6.0` outputs `1`.
`math -s3 10 / 6` outputs `1.666`.
\subsection math-cautions Cautions
Note that the modulo operator (`x % y`) is not well defined for floating point arithmetic. The `bc` command produces a nonsensical result rather than emit an error and fail in that case. It doesn't matter if the arguments are integers; e.g., `10 % 4`. You'll still get an incorrect result. Do not use the `-sN` flag with N greater than zero if you want sensible answers when using the modulo operator.
`open` opens a file in its default application, using the appropriate tool for the operating system. On GNU/Linux, this requires the common but optional `xdg-open` utility, from the `xdg-utils` package.
Note that this function will not be used if a command by this name exists (which is the case on macOS or Haiku).
@@ -53,7 +53,7 @@ printf also knows a number of backslash escapes:
- `\uhhhh` 16-bit Unicode character (hhhh is 4 digits)
- `\Uhhhhhhhh` 32-bit Unicode character (hhhhhhhh is 8 digits)
The `format' argument is re-used as many times as necessary to convert all of the given arguments. If a format specifier is not appropriate for the given argument, an error is printed. For example, `printf '%d' "102.234"` produces an error, as "102.234" cannot be formatted as an integer.
The `format` argument is re-used as many times as necessary to convert all of the given arguments. If a format specifier is not appropriate for the given argument, an error is printed. For example, `printf '%d' "102.234"` produces an error, as "102.234" cannot be formatted as an integer.
This file has been imported from the printf in GNU Coreutils version 6.9. If you would like to use a newer version of printf, for example the one shipped with your OS, try `command printf`.
\section realpath realpath - Convert a path to an absolute path without symlinks
\subsection realpath-synopsis Synopsis
\fish{synopsis}
realpath path
\endfish
\subsection realpath-description Description
This is implemented as a function and a builtin. The function will attempt to use an external realpath command if one can be found. Otherwise it falls back to the builtin. The builtin does not support any options. It's meant to be used only by scripts which need to be portable. The builtin implementation behaves like GNU realpath when invoked without any options (which is the most common use case). In general scripts should not invoke the builtin directly. They should just use `realpath`.
If the path is invalid no translated path will be written to stdout and an error will be reported.
`set_color` changes the foreground and/or background color of the terminal. `COLOR` is one of `black`, `red`, `green`, `brown`, `yellow`, `blue`, `magenta`, `purple`, `cyan`, `brred`, `brgreen`, `brbrown`, `bryellow`, `brblue`, `brmagenta`, `brpurple`, `brcyan`, `white`. The `br`, bright, forms are most useful as background colors. The special color `normal` resets the background and foreground to whatever is normal for your terminal.
`set_color` is used to control the color and styling of text in the terminal. `VALUE` corresponds to a reserved color name such as *red* or a RGB color value given as 3 or 6 hexadecimal digits. The *br*-, as in 'bright', forms are full-brightness variants of the 8 standard-brightness colors on many terminals. *brblack* has higher brightness than *black* - towards gray. A special keyword *normal* resets text formatting to terminal defaults.
You can also specify an RGB value with three or six hex digits, such as A0FF33 or f2f. `fish` will choose the closest supported color. A three digit value is equivalent to specifying each digit twice; e.g., `#2BC` is the same as `#22BBCC`. Hex RGB values can be in lower or uppercase, optionally prefixed with the pound-sign character. Depending on the capabilities of your terminal the actual color may be approximated by the closest known matching color in the [ANSI X3.64](https://en.wikipedia.org/wiki/ANSI_escape_code#Colors) color palette.
An RGB value with three or six hex digits, such as A0FF33 or f2f can be used. `fish` will choose the closest supported color. A three digit value is equivalent to specifying each digit twice; e.g., `set_color 2BC` is the same as `set_color 22BBCC`. Hexadecimal RGB values can be in lower or uppercase. Depending on the capabilities of your terminal (and the level of support `set_color` has for it) the actual color may be approximated by a nearby matching reserved color name or `set_color` may not have an effect on color. A second color may be given as a desired fallback color. e.g. `set_color 124212` *brblue* will instruct set_color to use *brblue* if a terminal is not capable of the exact shade of grey desired. This is very useful when an 8 or 16 color terminal might otherwise not use a color.
The following options are available:
- `-b`, `--background` `COLOR` sets the background color.
- `-c`, `--print-colors` prints a list of all valid color names.
- `-o`, `--bold` sets bold or extra bright mode.
- `-b`, `--background` *COLOR* sets the background color.
- `-c`, `--print-colors` prints a list of the 16 named colors.
- `-o`, `--bold` sets bold mode.
- `-d`, `--dim` sets dim mode.
- `-i`, `--italics` sets italics mode.
- `-r`, `--reverse` sets reverse mode.
- `-u`, `--underline` sets underlined mode.
Calling `set_color normal` will set the terminal background and foreground colors to the defaults for the terminal.
Using the *normal* keyword will reset foreground, background, and all formatting back to default.
Some terminals use the `--bold` escape sequence to switch to a brighter color set rather than bolding the characters. This only applies to the foreground color. You should probably use the `br` color name variants listed above for both the foreground and background "bright" colors rather than use this option. The only use for this option is on a black&white terminal (e.g., a DEC VT220) to select foreground black text that is bolder than the normal text.
\subsection set_color-notes Notes
Not all terminal emulators support all these features.
Note 1: Setting either color to "normal" will reset both background and foreground colors to whatever is the default for the terminal.
Note 2: Setting the background color only affects subsequently written characters. Fish provides no way to set the background color for the entire terminal window. Configuring the window background color (and other attributes such as its opacity) has to be done using whatever mechanisms the terminal provides.
1. Using the *normal* keyword will reset both background and foreground colors to whatever is the default for the terminal.
2. Setting the background color only affects subsequently written characters. Fish provides no way to set the background color for the entire terminal window. Configuring the window background color (and other attributes such as its opacity) has to be done using whatever mechanisms the terminal provides.
3. Some terminals use the `--bold` escape sequence to switch to a brighter color set rather than increasing the weight of text.
4. `set_color` works by printing sequences of characters to *stdout*. If used in command substitution or a pipe, these characters will also be captured. This may or may not be desirable. Checking the exit code of `isatty stdout` before using `set_color` can be useful to decide not to colorize output in a script.
\subsection set_color-example Examples
@@ -37,13 +41,17 @@ Note 2: Setting the background color only affects subsequently written character
set_color red; echo "Roses are red"
set_color blue; echo "Violets are blue"
set_color 62A; echo "Eggplants are dark purple"
set_color normal; echo "Normal is nice" # This will reset background, too
set_color normal; echo "Normal is nice" # Resets the background too
Fish uses a heuristic to decide if your terminal supports the 256color palette (as opposed to the more limited 16 color palette of older terminals). If you've done the equivalent of `set fish_term256 1` that will be true. If the $TERM value contains "256color" (e.g., "xterm-256color") that will be true. If your $TERM value is "xterm" and $TERM_PROGRAM is not set to "Apple_Terminal" that will be true. If your terminal supports the full 256 color palette (which is pretty much every color terminal emulator written in the past decade) you should ensure one of the aforementioned conditions is true.
Fish uses a heuristic to decide if a terminal supports the 256-color palette as opposed to the more limited 16 color palette of older terminals. Support can be forced on by setting `fish_term256` to *1*. If `$TERM` contains "256color" (e.g., *xterm-256color*), 256-color support is enabled. If `$TERM` contains *xterm*, 256 color support is enabled (except for MacOS: `$TERM_PROGRAM` and `$TERM_PROGRAM_VERSION` are used to detect Terminal.app from MacOS 10.6; support is disabled here it because it is known that it reports `xterm` and only supports 16 colors.
Many terminals support 24-bit (i.e., true-color) color escape sequences. This includes modern xterms, Gnome Terminal, KDE Konsole, and iTerm2. Fish currently does some limited attempts to detect whether a given `$TERM` supports 24-bit colors. You can explicitly enable that support via `set fish_term24bit 1`. If you do so fish will not map your RGB color values to the closest known matching color in the ANSI X3.64 color palette.
If terminfo reports 256 color support for a terminal, support will always be enabled. To debug color palette problems, `tput colors` may be useful to see the number of colors in terminfo for a terminal. Fish launched as `fish -d2` will include diagnostic messages that indicate the color support mode in use.
The `set_color` command uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and incomplete terminfo databases, and may lack color information for terminals that support it. Fish will use the [ANSI X3.64](https://en.wikipedia.org/wiki/ANSI_escape_code) escape sequences if the terminfo definition says less than 256 colors are supported; otherwise it will use the terminfo definition.
Many terminals support 24-bit (i.e., true-color) color escape sequences. This includes modern xterm, Gnome Terminal, Konsole, and iTerm2. Fish attempts to detect such terminals through various means in `config.fish` You can explicitly force that support via `set fish_term24bit 1`.
The `set_color` command uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and incomplete terminfo databases, and may lack color information for terminals that support it. Fish will assume that all terminals can use the [ANSI X3.64](https://en.wikipedia.org/wiki/ANSI_escape_code) escape sequences if the terminfo definition indicates a color below 16 is not supported.
Support for italics, dim, reverse, and other modes is not guaranteed in all terminal emulators. Fish attempts to determine if the terminal supports these modes even if the terminfo database may not be up-to-date.
With no arguments, `status` displays a summary of the current login and job control status of the shell.
The following options are available:
The following operations (sub-commands) are available:
- `-c` or `--is-command-substitution` returns 0 if fish is currently executing a command substitution.
- `is-command-sub` returns 0 if fish is currently executing a command substitution. Also `-c` or `--is-command-substitution`.
- `-b` or `--is-block` returns 0 if fish is currently executing a block of code.
- `is-block` returns 0 if fish is currently executing a block of code. Also `-b` or `--is-block`.
- `-i` or `--is-interactive` returns 0 if fish is interactive - that is, connected to a keyboard.
- `is-interactive` returns 0 if fish is interactive - that is, connected to a keyboard. Also `-i` or `--is-interactive`.
- `-l` or `--is-login` returns 0 if fish is a login shell - that is, if fish should perform login tasks such as setting up the PATH.
- `is-login` returns 0 if fish is a login shell - that is, if fish should perform login tasks such as setting up the PATH. Also `-l` or `--is-login`.
- `--is-full-job-control` returns 0 if full job control is enabled.
- `is-full-job-control` returns 0 if full job control is enabled. Also `--is-full-job-control` (no short flag).
- `--is-interactive-job-control` returns 0 if interactive job control is enabled.
- `is-interactive-job-control` returns 0 if interactive job control is enabled. Also, `--is-interactive-job-control` (no short flag).
- `--is-no-job-control` returns 0 if no job control is enabled.
- `is-no-job-control` returns 0 if no job control is enabled. Also `--is-no-job-control` (no short flag).
- `-f` or `--current-filename` prints the filename of the currently running script.
- `current-filename` prints the filename of the currently running script. Also `-f` or `--current-filename`.
- `-n` or `--current-line-number` prints the line number of the currently running script.
- `current-line-number` prints the line number of the currently running script. Also `-n` or `--current-line-number`.
- `-j CONTROLTYPE` or `--job-control=CONTROLTYPE` sets the job control type, which can be `none`, `full`, or `interactive`.
- `job-controlCONTROL-TYPE` sets the job control type, which can be `none`, `full`, or `interactive`. Also `-j CONTROL-TYPE` or `--job-control=CONTROL-TYPE`.
- `-t` or `--print-stack-trace` prints a stack trace of all function calls on the call stack.
- `print-stack-trace` prints a stack trace of all function calls on the call stack. Also `-t` or `--print-stack-trace`.
\subsection status-notes Notes
For backwards compatibility each subcommand can also be specified as a long or short option. For example, rather than `status is-login` you can type `status --is-login`. The flag forms are deprecated and may be removed in a future release (but not before fish 3.0).
You can only specify one subcommand per invocation even if you use the flag form of the subcommand.
@@ -42,12 +42,17 @@ The following subcommands are available:
- `trim` removes leading and trailing whitespace from each STRING. If `-l` or `--left` is given, only leading whitespace is removed. If `-r` or `--right` is given, only trailing whitespace is trimmed. The `-c` or `--chars` switch causes the characters in CHARS to be removed instead of whitespace. Exit status: 0 if at least one character was trimmed, or 1 otherwise.
- `escape` escapes each STRING such that it can be passed back to `eval` to produce the original argument again. By default, all special characters are escaped, and quotes are used to simplify the output when possible. If `-n` or `--no-quote` is given, the simplifying quoted format is not used. Exit status: 0 if at least one string was escaped, or 1 otherwise.
- `escape` escapes each STRING such that it can be passed back to `eval` to produce the original argument again. By default, all special characters are escaped, and quotes are used to simplify the output when possible. If `-n` or `--no-quoted` is given, the simplifying quoted format is not used. Exit status: 0 if at least one string was escaped, or 1 otherwise.
- `match` tests each STRING against PATTERN and prints matching substrings. Only the first match for each STRING is reported unless `-a` or `--all` is given, in which case all matches are reported. Matching can be made case-insensitive with `-i` or `--ignore-case`. If `-n` or `--index` is given, each match is reported as a 1-based start position and a length. By default, PATTERN is interpreted as a glob pattern matched against each entire STRING argument. If `-r` or `--regex` is given, PATTERN is interpreted as a Perl-compatible regular expression. For a regular expression containing capturing groups, multiple items will be reported for each match, one for the entire match and one for each capturing group. If --invert or -v is used the selected lines will be only those which do not match the given glob pattern or regular expression. Exit status: 0 if at least one match was found, or 1 otherwise.
- `match` tests each STRING against PATTERN and prints matching substrings. Only the first match for each STRING is reported unless `-a` or `--all` is given, in which case all matches are reported. Matching can be made case-insensitive with `-i` or `--ignore-case`. If `-n` or `--index` is given, each match is reported as a 1-based start position and a length. By default, PATTERN is interpreted as a glob pattern matched against each entire STRING argument. A glob pattern is only considered a valid match if it matches the entire STRING. If `-r` or `--regex` is given, PATTERN is interpreted as a Perl-compatible regular expression, which does not have to match the entire STRING. For a regular expression containing capturing groups, multiple items will be reported for each match, one for the entire match and one for each capturing group. If --invert or -v is used the selected lines will be only those which do not match the given glob pattern or regular expression. Exit status: 0 if at least one match was found, or 1 otherwise.
- `replace` is similar to `match` but replaces non-overlapping matching substrings with a replacement string and prints the result. By default, PATTERN is treated as a literal substring to be matched. If `-r` or `--regex` is given, PATTERN is interpreted as a Perl-compatible regular expression, and REPLACEMENT can contain C-style escape sequences like `\t` as well as references to capturing groups by number or name as `$n` or `${n}`. Exit status: 0 if at least one replacement was performed, or 1 otherwise.
Both the `match` and `replace` subcommand support regular expressions when used with the `-r` or `--regex` option. The dialect is that of PCRE2.
In general, special characters are special by default, so `a+` matches one or more "a"s, while `a\+` matches an "a" and then a "+". `(a+)` matches one or more "a"s in a capturing group (`(?:XXXX)` denotes a non-capturing group). For the replacement parameter of `replace`, `$n` refers to the n-th group of the match. In the match parameter, `\n` (e.g. `\1`) refers back to groups.
\subsection string-example Examples
@@ -120,6 +125,13 @@ The following subcommands are available:
>_ echo 'ok?' | string match '*\\?'
>_ <outp>ok?</outp>
\endfish
\subsection string-example-match-regex Match Regex Examples
\fish{cli-dark}
>_ string match -r 'cat|dog|fish' 'nice dog'
<outp>dog</outp>
>_ string match -r -v "c.*[12]" {cat,dog}(seq 1 4)
<outp>dog1</outp>
@@ -128,13 +140,6 @@ The following subcommands are available:
<outp>dog3</outp>
<outp>cat4</outp>
<outp>dog4</outp>
\endfish
\subsection string-example-match-regex Match Regex Examples
\fish{cli-dark}
>_ string match -r 'cat|dog|fish' 'nice dog'
<outp>dog</outp>
>_ string match -r '(\\d\\d?):(\\d\\d):(\\d\\d)' <asis>2:34:56</asis>
@@ -99,7 +99,7 @@ Commands can be chained with semicolons.
You'll quickly notice that `fish` performs syntax highlighting as you type. Invalid commands are colored red by default:
\fish{cli-dark}
>_ <error>/bin/mkd</error>
>_ <eror>/bin/mkd</eror>
\endfish
A command may be invalid because it does not exist, or refers to a file that you cannot execute. When the command becomes valid, it is shown in a different color:
@@ -170,7 +170,7 @@ stdin and stdout can be redirected via the familiar < and >. Unlike other
`fish` suggests commands as you type, and shows the suggestion to the right of the cursor, in gray. For example:
\fish{cli-dark}
>_ <error>/bin/h</error><s>___ostname</s>
>_ <eror>/bin/h</eror><s>___ostname</s>
\endfish
It knows about paths and options:
@@ -182,7 +182,7 @@ It knows about paths and options:
And history too. Type a command once, and you can re-summon it by just typing a few letters:
To accept the autosuggestion, hit @cursor_key{→,right arrow} or @key{Control,F}. To accept a single word of the autosuggestion, @key{Alt,→} (right arrow). If the autosuggestion is not what you want, just ignore it.
@@ -194,14 +194,14 @@ To accept the autosuggestion, hit @cursor_key{→,right arrow} or @key{Contro
Press @key{Tab}, and `fish` will attempt to complete the command, argument, or path:
\fish{cli-dark}
>_ <error>/pri</error> @key{Tab} → /private/
>_ <eror>/pri</eror> @key{Tab} → /private/
\endfish
If there's more than one possibility, it will list them:
@@ -11,7 +11,7 @@ while CONDITION; COMMANDS...; end
If the exit status of `CONDITION` is non-zero on the first iteration, `COMMANDS` will not be executed at all.
You can use <a href="#and">`and`</a> or <a href="#and">`or`</a> for complex conditions. Even more complex control can be achieved with `while true` containing a <a href="#break">break</a>.
You can use <a href="#and">`and`</a> or <a href="#or">`or`</a> for complex conditions. Even more complex control can be achieved with `while true` containing a <a href="#break">break</a>.
shellScript = "cd \"${SRCROOT}\" ;\n# Run build_documentation.sh\n# Do this in a subshell so that we keep going even if it calls exit\nif [ -f lexicon_filter ] ; then\n export INPUT_FILTER=./lexicon_filter\nelse\n echo \"build_documentation:0: warning: lexicon_filter not found, ignoring it\" >&2\nfi\n\n( . \"./build_tools/build_documentation.sh\" \"./Doxyfile.help\" \"./doc_src\" \"$BUILT_PRODUCTS_DIR\" )\n\n# Copy certain files into man1, destined for share/man/man1 (instead of share/fish/man/man1)\n# These copies will fail if the documentation did not build; that's OK\n# We want to create the directory even if the documentation did not build, so that the Xcode build can still succeed\nmanpathdir=\"${BUILT_PRODUCTS_DIR}/pages_for_manpath/man1\"\necho \"Copying pages destined for manpath into $manpathdir\"\nrm -Rf \"$manpathdir\"\nmkdir -p \"$manpathdir\"\nfor manpage in fish.1 set_color.1 fishd.1 fish_indent.1; do\n manpagepath=\"${BUILT_PRODUCTS_DIR}/man/man1/${manpage}\"\n test -f \"$manpagepath\" && cp \"$manpagepath\" \"${BUILT_PRODUCTS_DIR}/pages_for_manpath/man1/\"\ndone\n\n# Always succeed\ntrue\n";
shellScript = "cd \"${SRCROOT}\" ;\n# Run build_documentation.sh\n# Do this in a subshell so that we keep going even if it calls exit\nif [ -f lexicon_filter ] ; then\n export INPUT_FILTER=./lexicon_filter\nelse\n echo \"build_documentation:0: warning: lexicon_filter not found, ignoring it\" >&2\nfi\n\n( . \"./build_tools/build_documentation.sh\" \"./Doxyfile.help\" \"./doc_src\" \"$BUILT_PRODUCTS_DIR\" )\n\n# Copy certain files into man1, destined for share/man/man1 (instead of share/fish/man/man1)\n# These copies will fail if the documentation did not build; that's OK\n# We want to create the directory even if the documentation did not build, so that the Xcode build can still succeed\nmanpathdir=\"${BUILT_PRODUCTS_DIR}/pages_for_manpath/man1\"\necho \"Copying pages destined for manpath into $manpathdir\"\nrm -Rf \"$manpathdir\"\nmkdir -p \"$manpathdir\"\nfor manpage in fish.1 fish_indent.1; do\n manpagepath=\"${BUILT_PRODUCTS_DIR}/man/man1/${manpage}\"\n test -f \"$manpagepath\" && cp \"$manpagepath\" \"${BUILT_PRODUCTS_DIR}/pages_for_manpath/man1/\"\ndone\n\n# Always succeed\ntrue\n";
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@@ -1298,8 +1523,15 @@
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@@ -1311,6 +1543,7 @@
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