Files
fish-shell/doc_src/cmds/fish_command_not_found.rst
Johannes Altmanninger 6e036740de fish_command_not_found: remove legacy event handler
We no longer emit the "fish_command_not_found" event ourselves,
so the event handlers are only useful to users who
1. run "emit fish_command_not_found"
2. copy the definition of "fish_command_not_found" to their config and run
   that with fish < 3.2.

Probably no one does 1; there are no matches in
https://github.com/search?utf8=%E2%9C%93&q=%22emit+fish_command_not_found%22+language%3Afish&type=code

Reason 2 is less relevant after 5 years.

For additional evidence, none of our specializations
("/usr/libexec/pk-command-not-found" etc.)  react to the event,
and no one has ever complained.

Stop registering any fish_command_not_found as event handler,
for consistency and simplicity.

While at it, remove the documentation on how to make it work for
version < 3.2.
2026-05-11 10:24:12 +08:00

53 lines
1.3 KiB
ReStructuredText

fish_command_not_found - what to do when a command wasn't found
===============================================================
Synopsis
--------
.. synopsis::
function fish_command_not_found
...
end
Description
-----------
When fish tries to execute a command and can't find it, it invokes this function.
It can print a message to tell you about it, and it often also checks for a missing package that would include the command.
Fish ships multiple handlers for various operating systems and chooses from them when this function is loaded,
or you can define your own.
It receives the full commandline as one argument per token, so $argv[1] contains the missing command.
When you leave ``fish_command_not_found`` undefined (e.g. by adding an empty function file) or explicitly call ``__fish_default_command_not_found_handler``, fish will just print a simple error.
Example
-------
A simple handler:
::
function fish_command_not_found
echo Did not find command $argv[1]
end
> flounder
Did not find command flounder
Or the handler for OpenSUSE's command-not-found::
function fish_command_not_found
/usr/bin/command-not-found $argv[1]
end
Or the simple default handler::
function fish_command_not_found
__fish_default_command_not_found_handler $argv
end