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harden man against undef vars

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This commit is contained in:
Kurtis Rader 2017-07-04 13:43:06 -07:00
parent 2df89f4b0f
commit 8caab103d8
1 changed files with 10 additions and 9 deletions
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19
share/functions/man.fish
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@ -1,20 +1,21 @@
function man --description "Format and display the on-line manual pages"
# Work around the "builtin" manpage that everything symlinks to,
# by prepending our fish datadir to man. This also ensures that man gives fish's
# man pages priority, without having to put fish's bin directories first in $PATH
# Notice local but exported variable
set -lx MANPATH (string join : $MANPATH)
if test -z "$MANPATH"
type -q manpath
and set MANPATH (command manpath)
set -l manpath
if set -q MANPATH
set manpath $MANPATH
else if command -qs manpath
set manpath (command manpath)
end
# Notice local exported copy of the variable.
set -lx MANPATH $manpath
set -l fish_manpath (dirname $__fish_datadir)/fish/man
if test -d "$fish_manpath" -a -n "$MANPATH"
set MANPATH "$fish_manpath":$MANPATH
# Invoke man with this manpath, and we're done
set MANPATH $fish_manpath:$MANPATH
# Invoke man with this manpath, and we're done.
command man $argv
return
end