mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-24 12:32:52 +08:00
53 lines
1.2 KiB
Fish
53 lines
1.2 KiB
Fish
|
|
function alias --description "Legacy function for creating shellscript functions using an alias-like syntax"
|
|
|
|
if count $argv >/dev/null
|
|
switch $argv[1]
|
|
case -h --h --he --hel --help
|
|
__fish_print_help alias
|
|
return 0
|
|
end
|
|
end
|
|
|
|
set -l name
|
|
set -l body
|
|
set -l prefix
|
|
switch (count $argv)
|
|
|
|
case 0
|
|
echo "Fish implements aliases using functions. Use 'functions' builtin to see list of functions and 'functions function_name' to see function definition, type 'help alias' for more information."
|
|
return 1
|
|
case 1
|
|
# Some seds (e.g. on Mac OS X), don't support \n in the RHS
|
|
# Use a literal newline instead
|
|
# http://sed.sourceforge.net/sedfaq4.html#s4.1
|
|
set -l tmp (echo $argv|sed -e "s/\([^=]\)=/\1\\
|
|
/")
|
|
set name $tmp[1]
|
|
set body $tmp[2]
|
|
|
|
case 2
|
|
set name $argv[1]
|
|
set body $argv[2]
|
|
|
|
case \*
|
|
printf ( _ "%s: Expected one or two arguments, got %d\n") alias (count $argv)
|
|
return 1
|
|
end
|
|
|
|
|
|
# Prevent the alias from immediately running into an infinite recursion if
|
|
# $body starts with the same command as $name.
|
|
|
|
switch $body
|
|
case $name $name\ \* $name\t\*
|
|
if contains $name (builtin --names)
|
|
set prefix builtin
|
|
else
|
|
set prefix command
|
|
end
|
|
end
|
|
|
|
eval "function $name; $prefix $body \$argv; end"
|
|
end
|