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set exclude-dir or exclude grep flags only if available

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Dmitriy 2014-03-24 10:17:19 +03:00 committed by kemko
parent ffc17b6b4d
commit 9385b3ee0a
1 changed files with 17 additions and 6 deletions
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17
lib/grep.zsh
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@ -3,11 +3,22 @@
# Examples: http://rubyurl.com/ZXv
#
# avoid VCS folders
GREP_OPTIONS=
GREP_OPTIONS="--color=auto"
# avoid VCS folders (if the necessary grep flags are available)
grep-flag-available() {
echo | grep $1 "" >/dev/null 2>&1
}
if grep-flag-available --exclude-dir=.cvs; then
for PATTERN in .cvs .git .hg .svn; do
GREP_OPTIONS+=" --exclude-dir=$PATTERN"
done
GREP_OPTIONS+="--color=auto"
elif grep-flag-available --exclude=.cvs; then
for PATTERN in .cvs .git .hg .svn; do
GREP_OPTIONS+=" --exclude=$PATTERN"
done
fi
unfunction grep-flag-available
export GREP_OPTIONS="$GREP_OPTIONS"
export GREP_COLOR='1;32'