mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-30 14:24:35 +08:00
35 lines
1.1 KiB
Fish
35 lines
1.1 KiB
Fish
|
|
function __fish_print_help --description "Print help message for the specified fish function or builtin" --argument item
|
|
|
|
switch $argv[1]
|
|
case '.'
|
|
set item source
|
|
|
|
case '*'
|
|
set item $argv[1]
|
|
end
|
|
|
|
# These two expressions take care of underlines (Should be italic)
|
|
set -l cmd1 s/_\x08'\(.\)'/(set_color --underline)\\1(set_color normal)/g
|
|
set -l cmd2 s/'\(.\)'\x08_/(set_color --underline)\\1(set_color normal)/g
|
|
|
|
# This expression should take care of bold characters. It's not
|
|
# waterproof, since it doesn't check that the same character is
|
|
# used both before and after the backspace, since regular
|
|
# languages don't allow backreferences.
|
|
set -l cmd3 s/.\x08'\(.\)'/(set_color --bold)\\1(set_color normal)/g
|
|
|
|
# Combine all expressions in a single variable
|
|
set -l sed_cmd -e $cmd1 -e $cmd2 -e $cmd3
|
|
|
|
# Render help output, save output into the variable 'help'
|
|
set -l help (nroff -man $__fish_datadir/man/$item.1)
|
|
set -l lines (count $help)
|
|
|
|
# Print an empty line first
|
|
echo
|
|
|
|
# Filter and print help
|
|
printf "%s\n" $help| tail -n (expr $lines - 5) | head -n (expr $lines - 8) | sed $sed_cmd
|
|
|
|
end |