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function funced --description 'Edit function definition'
set -l editor
# Check VISUAL first since theoretically EDITOR could be ed
if set -q VISUAL
set editor $VISUAL
else if set -q EDITOR
set editor $EDITOR
end
set -l interactive
set -l funcname
while set -q argv[1]
switch $argv[1]
case -h --help
__fish_print_help funced
return 0
case -e --editor
set editor $argv[2]
set -e argv[2]
case -i --interactive
set interactive 1
case --
set funcname $funcname $argv[2]
set -e argv[2]
case '-*'
set_color red
printf (_ "%s: Unknown option %s\n") funced $argv[1]
set_color normal
return 1
case '*' '.*'
set funcname $funcname $argv[1]
end
set -e argv[1]
end
if test (count $funcname) -ne 1
set_color red
_ "funced: You must specify one function name
"
set_color normal
return 1
end
set -l init
switch $funcname
case '-*'
set init function -- $funcname\n\nend
case '*'
set init function $funcname\n\nend
end
# Break editor up to get its first command (i.e. discard flags)
if test -n "$editor"
set -l editor_cmd
eval set editor_cmd $editor
if not type -q -f "$editor_cmd[1]"
_ "funced: The value for \$EDITOR '$editor' could not be used because the command '$editor_cmd[1]' could not be found
"
set editor fish
end
end
# If no editor is specified, use fish
if test -z "$editor"
set editor fish
end
if begin; set -q interactive[1]; or test "$editor" = fish; end
set -l IFS
if functions -q -- $funcname
# Shadow IFS here to avoid array splitting in command substitution
set init (functions -- $funcname | fish_indent --no-indent)
end
set -l prompt 'printf "%s%s%s> " (set_color green) '$funcname' (set_color normal)'
# Unshadow IFS since the fish_title breaks otherwise
set -e IFS
if read -p $prompt -c "$init" -s cmd
# Shadow IFS _again_ to avoid array splitting in command substitution
set -l IFS
eval (echo -n $cmd | fish_indent)
end
return 0
end
# OSX mktemp is rather restricted - no suffix, no way to automatically use TMPDIR
# Create a directory so we can use a ".fish" suffix for the file - makes editors pick up that it's a fish file
set -q TMPDIR; or set -l TMPDIR /tmp
set -l tmpdir (mktemp -d $TMPDIR/fish.XXXXXX)
set -l tmpname $tmpdir/$funcname.fish
if functions -q -- $funcname
functions -- $funcname > $tmpname
else
echo $init > $tmpname
end
# Repeatedly edit until it either parses successfully, or the user cancels
# If the editor command itself fails, we assume the user cancelled or the file
# could not be edited, and we do not try again
while true
if not eval $editor $tmpname
_ "Editing failed or was cancelled"
echo
else
if not source $tmpname
# Failed to source the function file. Prompt to try again.
echo # add a line between the parse error and the prompt
set -l repeat
set -l prompt (_ 'Edit the file again\? [Y/n]')
while test -z "$repeat"
read -p "echo $prompt\ " repeat
end
if not contains $repeat n N no NO No nO
continue
end
_ "Cancelled function editing"
echo
end
end
break
end
set -l stat $status
rm $tmpname >/dev/null
and rmdir $tmpdir >/dev/null
return $stat
end
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