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Added option to use completion source order without re-sorting

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Introduce a -k/--keep-order switch to `complete` that can be used to
prevent fish from sorting/re-ordering the results provided by a completion
source.

In addition, this patch does so without doing away with deduplication
of completions by introducing a new unique_unsorted(..) helper function
that removes duplicates in-place without affecting the general order of
the vector/container.

Note that the code now uses a stable sort for completions, since the
behavior of is_naturally_less_than as of this patch now means that the
results are not necessarily _actually_ identical just because that function
repeatedly returns false for any ordering of any given two elements.

Fixes #361
This commit is contained in:
Mahmoud Al-Qudsi
2017-07-24 17:54:54 -05:00
committed by Kurtis Rader
parent 1278cf2b6e
commit 94041974e4
5 changed files with 43 additions and 12 deletions
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3
doc_src/complete.txt
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@@ -8,6 +8,7 @@ complete ( -c | --command | -p | --path ) COMMAND
[( -s | --short-option ) SHORT_OPTION]...
[( -l | --long-option | -o | --old-option ) LONG_OPTION]...
[( -a | --arguments ) OPTION_ARGUMENTS]
[( -k | --keep-order )]
[( -f | --no-files )]
[( -r | --require-parameter )]
[( -x | --exclusive )]
@@ -47,6 +48,8 @@ the fish manual.
- `-a OPTION_ARGUMENTS` or `--arguments=OPTION_ARGUMENTS` adds the specified option arguments to the completions list.
- `-k` or `--keep-order` preserves the order of the `OPTION_ARGUMENTS` specified via `-a` or `--arguments` instead of sorting alphabetically.
- `-f` or `--no-files` specifies that the options specified by this completion may not be followed by a filename.
- `-r` or `--require-parameter` specifies that the options specified by this completion always must have an option argument, i.e. may not be followed by another option.