blob: b213c8811e4e26e9361ebf96e6a1e53657fa0085 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
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
|
