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|
# Autocompletion for man(1)
_man() {
# Don't even bother if we don't have manpath(1)
hash manpath || return 1
# Snarf the word
local word
word=${COMP_WORDS[COMP_CWORD]}
# If this is the second word, and the previous word started with a number,
# we'll assume that's the section to search
local section subdir
if ((COMP_CWORD > 1)) && [[ ${COMP_WORDS[COMP_CWORD-1]} == [0-9]* ]] ; then
section=${COMP_WORDS[COMP_CWORD-1]}
subdir=man${section%%[^0-9]*}
fi
# Read completion results from a subshell and add them to the COMPREPLY
# array individually
while IFS= read -d '' -r page ; do
COMPREPLY[${#COMPREPLY[@]}]=$page
done < <(
# Do not return dotfiles, give us extended globbing, and expand empty
# globs to just nothing
shopt -u dotglob
shopt -s extglob nullglob
# Start an array of pages
declare -a pages
# Break manpath(1) output into an array of paths
IFS=: read -a manpaths -r < <(manpath 2>/dev/null)
# Iterate through the manual page paths and add every manual page we find
for manpath in "${manpaths[@]}" ; do
[[ $manpath ]] || continue
if [[ $section ]] ; then
for page in "$manpath"/"$subdir"/"$word"*."$section"?(.[glx]z|.bz2|.lzma|.Z) ; do
pages[${#pages[@]}]=$page
done
else
for page in "$manpath"/man[0-9]*/"$word"*.* ; do
pages[${#pages[@]}]=$page
done
fi
done
# Strip paths, .gz suffixes, and finally .<section> suffixes
pages=("${pages[@]##*/}")
pages=("${pages[@]%.@([glx]z|bz2|lzma|Z)}")
pages=("${pages[@]%.[0-9]*}")
# Bail out if we ended up with no pages somehow to prevent us from
# printing
((${#pages[@]})) || exit 1
# Print the pages array to stdout, quoted and null-delimited
printf '%q\0' "${pages[@]}"
)
}
complete -F _man -o default man
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