/bash_completion_lib/include/_get_cword

 1# Get the word to complete
 2# This is nicer than ${COMP_WORDS[$COMP_CWORD]}, since it handles cases
 3# where the user is completing in the middle of a word.
 4# (For example, if the line is "ls foobar",
 5# and the cursor is here -------->   ^
 6# it will complete just "foo", not "foobar", which is what the user wants.)
 7#
 8# Accepts an optional parameter indicating which characters out of
 9# $COMP_WORDBREAKS should NOT be considered word breaks. This is useful
10# for things like scp where we want to return host:path and not only path.
11_get_cword()
12{
13	local i
14	local WORDBREAKS=${COMP_WORDBREAKS}
15	if [ -n $1 ]; then
16		for (( i=0; i<${#1}; ++i )); do
17			local char=${1:$i:1}
18			WORDBREAKS=${WORDBREAKS//$char/}
19		done
20	fi
21	local cur=${COMP_LINE:0:$COMP_POINT}
22	local tmp="${cur}"
23	local word_start=`expr "$tmp" : '.*['"${WORDBREAKS}"']'`
24	while [ "$word_start" -ge 2 ]; do
25        	local char=${cur:$(( $word_start - 2 )):1}
26		if [ "$char" != "\\" ]; then
27			break
28		fi
29		tmp=${COMP_LINE:0:$(( $word_start - 2 ))}
30		word_start=`expr "$tmp" : '.*['"${WORDBREAKS}"']'`
31	done
32
33
34	cur=${cur:$word_start}
35	echo $cur
36} # _get_cword()
37
38