fish-shell/tests/checks/command-not-found.fish

# RUN: %fish -C 'set -g fish %fish' %s
set -g PATH
$fish -c "nonexistent-command-1234 banana rama"
#CHECKERR: fish: Unknown command: nonexistent-command-1234
#CHECKERR: fish: 
#CHECKERR: nonexistent-command-1234 banana rama
#CHECKERR: ^
$fish -C 'function fish_command_not_found; echo cmd-not-found; end' -ic "nonexistent-command-1234 1 2 3 4"
#CHECKERR: cmd-not-found
#CHECKERR: fish: 
#CHECKERR: nonexistent-command-1234 1 2 3 4
#CHECKERR: ^
$fish -C 'function fish_command_not_found; echo command-not-found $argv; end' -c "nonexistent-command-abcd foo bar baz"
#CHECKERR: command-not-found nonexistent-command-abcd foo bar baz
#CHECKERR: fish: 
#CHECKERR: nonexistent-command-abcd foo bar baz
#CHECKERR: ^

$fish -C 'functions --erase fish_command_not_found' -c 'nonexistent-command apple friday'
#CHECKERR: fish: Unknown command: nonexistent-command
#CHECKERR: nonexistent-command apple friday
#CHECKERR: ^

exit 0
Call "fish_command_not_found" if a command wasn't found Previously, when a command wasn't found, fish would emit the "fish_command_not_found" event. This was annoying as it was hard to override (the code ended up checking for a function called `__fish_command_not_found_handler` anyway!), the setup was ugly, and it's useless - there is no use case for multiple command-not-found handlers. Instead, let's just call a function `fish_command_not_found` if it exists, or print the default message otherwise. The event is completely removed, but because a missing event is not an error (MEISNAE in C++-speak) this isn't an issue. Note that, for backwards-compatibility, we still keep the default handler function around even tho the new one is hard-coded in C++. Also, if we detect a previous handler, the new handler just calls it. This way, the backwards-compatible way to install a custom handler is: ```fish function __fish_command_not_found_handler --on-event fish_command_not_found # do a little dance, make a little love, get down tonight end ``` and the new hotness is ```fish function fish_command_not_found # do the thing end ``` Fixes #7293. 2020-08-29 19:54:13 +00:00			`# RUN: %fish -C 'set -g fish %fish' %s`
			`set -g PATH`
			`$fish -c "nonexistent-command-1234 banana rama"`
			`#CHECKERR: fish: Unknown command: nonexistent-command-1234`
			`#CHECKERR: fish:`
			`#CHECKERR: nonexistent-command-1234 banana rama`
			`#CHECKERR: ^`
			`$fish -C 'function fish_command_not_found; echo cmd-not-found; end' -ic "nonexistent-command-1234 1 2 3 4"`
			`#CHECKERR: cmd-not-found`
			`#CHECKERR: fish:`
			`#CHECKERR: nonexistent-command-1234 1 2 3 4`
			`#CHECKERR: ^`
			`$fish -C 'function fish_command_not_found; echo command-not-found $argv; end' -c "nonexistent-command-abcd foo bar baz"`
			`#CHECKERR: command-not-found nonexistent-command-abcd foo bar baz`
			`#CHECKERR: fish:`
			`#CHECKERR: nonexistent-command-abcd foo bar baz`
			`#CHECKERR: ^`

			`$fish -C 'functions --erase fish_command_not_found' -c 'nonexistent-command apple friday'`
			`#CHECKERR: fish: Unknown command: nonexistent-command`
			`#CHECKERR: nonexistent-command apple friday`
			`#CHECKERR: ^`

			`exit 0`