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47aa79813d
Fish functions are great for configuring fish but they don't integrate
seamlessly with the rest of the system. For tasks that can run outside fish,
writing scripts is the natural approach.
To edit my scripts I frequently run
$EDITOR (which my-script)
Would be great to reduce the amount typing for this common case (the names
of editor and scripts are usually short, so that's a lot of typing spent on
the boring part).
Our Alt+o binding opens the file at the cursor in a pager. When the cursor
is in command position, it doesn't do anything (unless the command is actually
a valid file path). Let's make it open the resolved file path in an editor.
In future, we should teach this binding to delegate to "funced" upon seeing
a function instead of a script. I didn't do it yet because funced prints
messages, so it will mess with the commandline rendering if used from
a binding. (The fact that funced encourages overwriting functions that
ship with fish is worrysome. Also I'm not sure why funced doesn't open the
function's source file directly (if not sourced from stdin). Persisting the
function should probably be the default.)
Alternative approach: I think other shells expand "=my-script" to
"/path/to/my-script". That is certainly an option -- if we do that we'd want
to teach fish to complete command names after "=". Since I don't remember
scenarios where I care about the full path of a script beyond opening it in
my editor, I didn't look further into this.
Closes #10266
83 lines
2.5 KiB
Fish
83 lines
2.5 KiB
Fish
function edit_command_buffer --description 'Edit the command buffer in an external editor'
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set -l f (mktemp)
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or return 1
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if set -q f[1]
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command mv $f $f.fish
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set f $f.fish
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else
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# We should never execute this block but better to be paranoid.
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if set -q TMPDIR
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set f $TMPDIR/fish.$fish_pid.fish
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else
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set f /tmp/fish.$fish_pid.fish
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end
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command touch $f
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or return 1
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end
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set -l editor (__fish_anyeditor)
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or return 1
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commandline -b >$f
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set -l offset (commandline --cursor)
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# compute cursor line/column
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set -l lines (commandline)\n
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set -l line 1
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while test $offset -ge (string length -- $lines[1])
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set offset (math $offset - (string length -- $lines[1]))
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set line (math $line + 1)
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set -e lines[1]
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end
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set col (math $offset + 1)
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set -l basename (string match -r '[^/]+$' -- $editor[1])
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set -l wrap_targets (complete -- $basename | string replace -rf '^complete [^/]+ --wraps (.+)$' '$1')
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set -l found false
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for alias in $basename $wrap_targets
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switch $alias
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case vi vim nvim
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set -a editor +$line +"norm! $col|" $f
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case emacs emacsclient gedit kak
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set -a editor +$line:$col $f
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case nano
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set -a editor +$line,$col $f
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case joe ee
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set -a editor +$line $f
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case code code-oss
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set -a editor --goto $f:$line:$col --wait
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case subl
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set -a editor $f:$line:$col --wait
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case micro
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set -a editor $f +$line:$col
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case '*'
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continue
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end
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set found true
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break
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end
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if not $found
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set -a editor $f
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end
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__fish_disable_bracketed_paste
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$editor
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set -l editor_status $status
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__fish_enable_bracketed_paste
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# Here we're checking the exit status of the editor.
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if test $editor_status -eq 0 -a -s $f
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# Set the command to the output of the edited command and move the cursor to the
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# end of the edited command.
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commandline -r -- (command cat $f)
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commandline -C 999999
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else
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echo
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echo (_ "Ignoring the output of your editor since its exit status was non-zero")
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echo (_ "or the file was empty")
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end
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command rm $f
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# We've probably opened something that messed with the screen.
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# A repaint seems in order.
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commandline -f repaint
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end
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