fish-shell/share/functions/__fish_describe_command.fish
David Adam f36c82ce86 Reenable command descriptions on macOS 10.15.4+
Further work on #6270, as recommended in 611a6589ea.

[ci skip]
2020-05-01 21:28:43 +08:00

41 lines
1.3 KiB
Fish

#
# This function is used internally by the fish command completion code
#
# macOS 10.15 "Catalina" has some major issues.
# The whatis database is non-existent, so apropos tries (and fails) to create it every time,
# which takes about half a second.
#
# So we disable this entirely in that case.
if test (uname) = Darwin
set -l darwin_version (uname -r | string split .)
# macOS 15 is Darwin 19, this is an issue up to and including 10.15.3.
if test "$darwin_version[1]" = 19 -a "$darwin_version[2]" -le 3
function __fish_describe_command
end
# (remember: exit when `source`ing only exits the file, not the shell)
exit
end
end
# Perform this check once at startup rather than on each invocation
if not type -q apropos
function __fish_describe_command
end
exit
end
function __fish_describe_command -d "Command used to find descriptions for commands"
# $argv will be inserted directly into the awk regex, so it must be escaped
set -l argv_regex (string escape --style=regex "$argv")
apropos $argv 2>/dev/null | awk -v FS=" +- +" '{
split($1, names, ", ");
for (name in names)
if (names[name] ~ /^'"$argv_regex"'.* *\([18]\)/ ) {
sub( "( |\t)*\\\([18]\\\)", "", names[name] );
sub( " \\\[.*\\\]", "", names[name] );
print names[name] "\t" $2;
}
}'
end