fish-shell/share/functions/__fish_apropos.fish
Folke Lemaitre a6a0d43c9c Better __fish_describe_command for Macos
override MANPATH used by apropos with local whatis database and update it once a day

get rid of xargs

Created __fish_apropos and fixed __fish_complete_man to use that as well

moved macos apropos comment
2020-10-03 16:18:44 -07:00

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1.1 KiB
Fish

if not type -q apropos
function __fish_apropos
end
exit
end
function __fish_apropos
# 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.
#
# Instead, we build a whatis database in the user cache directory
# and override the MANPATH using that directory before we run `apropos`
#
# the cache is rebuilt once a day
if test (uname) = Darwin
set -l cache $HOME/.cache/fish/
if test -n "$XDG_CACHE_HOME"
set cache $XDG_CACHE_HOME/fish
end
set -l db $cache/whatis
set -l max_age 86400 # one day
set -l age $max_age
if test -f $db
set age (math (date +%s) - (stat -f %m $db))
end
if test $age -ge $max_age
echo "making cache $age $max_age"
mkdir -m 700 -p $cache
/usr/libexec/makewhatis -o $db (man --path | string split :) >/dev/null 2>&1
end
MANPATH="$cache" apropos $argv
else
apropos $argv
end
end