fish-shell/tests/checks/commandline.fish

#RUN: %fish %s

commandline --input "echo foo | bar" --is-valid
and echo Valid
# CHECK: Valid

commandline --input "echo foo | " --is-valid
or echo Invalid $status
# CHECK: Invalid 2

# TODO: This seems a bit awkward?
# The empty commandline is an error, not incomplete?
commandline --input '' --is-valid
or echo Invalid $status
# CHECK: Invalid 1

commandline --input 'echo $$' --is-valid
or echo Invalid $status
# CHECK: Invalid 1
commandline: Add --is-valid option (#8142) * commandline: Add --is-valid option to query whether it's syntactically complete This means querying when the commandline is in a state that it could be executed. Because our `execute` bind function also inserts a newline if it isn't. One case that's not handled right now: `execute` also expands abbreviations, those can technically make the commandline invalid again. Unfortunately we have no real way to check without doing the replacement. Also since abbreviations are only available in command position when you _execute_ them the commandline will most likely be valid. This is enough to make transient prompts work: ```fish function reset-transient --on-event fish_postexec set -g TRANSIENT 0 end function maybe_execute if commandline --is-valid set -g TRANSIENT 1 commandline -f repaint else set -g TRANSIENT 0 end commandline -f execute end bind \r maybe_execute ``` and then in `fish_prompt` react to $TRANSIENT being set to 1. 2021-08-14 09:29:22 +00:00			`#RUN: %fish %s`

			`commandline --input "echo foo \| bar" --is-valid`
			`and echo Valid`
			`# CHECK: Valid`

			`commandline --input "echo foo \| " --is-valid`
			`or echo Invalid $status`
			`# CHECK: Invalid 2`

			`# TODO: This seems a bit awkward?`
			`# The empty commandline is an error, not incomplete?`
			`commandline --input '' --is-valid`
			`or echo Invalid $status`
			`# CHECK: Invalid 1`

			`commandline --input 'echo $$' --is-valid`
			`or echo Invalid $status`
			`# CHECK: Invalid 1`