oh-my-zsh/lib/grep.zsh

# is x grep argument available?
grep-flag-available() {
    echo | grep $1 "" >/dev/null 2>&1
}

GREP_OPTIONS=""

# color grep results
if grep-flag-available --color=auto; then
    GREP_OPTIONS+=" --color=auto"
fi

# ignore VCS folders (if the necessary grep flags are available)
VCS_FOLDERS="{.bzr,.cvs,.git,.hg,.svn}"

if grep-flag-available --exclude-dir=.cvs; then
    GREP_OPTIONS+=" --exclude-dir=$VCS_FOLDERS"
elif grep-flag-available --exclude=.cvs; then
    GREP_OPTIONS+=" --exclude=$VCS_FOLDERS"
fi

# export grep settings
alias grep="grep $GREP_OPTIONS"

# clean up
unset GREP_OPTIONS
unset VCS_FOLDERS
unfunction grep-flag-available
Tidy up the grep.zsh library 2014-12-13 18:36:57 +00:00			`# is x grep argument available?`
			`grep-flag-available() {`
			`echo \| grep $1 "" >/dev/null 2>&1`
			`}`
avoid VCS folders 2012-06-14 05:06:36 +00:00
Test if --color=auto is a valid option for grep 2015-02-02 19:49:24 +00:00			`GREP_OPTIONS=""`

Tidy up the grep.zsh library 2014-12-13 18:36:57 +00:00			`# color grep results`
Test if --color=auto is a valid option for grep 2015-02-02 19:49:24 +00:00			`if grep-flag-available --color=auto; then`
			`GREP_OPTIONS+=" --color=auto"`
			`fi`
set exclude-dir or exclude grep flags only if available 2014-03-24 07:17:19 +00:00
Tidy up the grep.zsh library 2014-12-13 18:36:57 +00:00			`# ignore VCS folders (if the necessary grep flags are available)`
Ignore .bzr folders in grep too 2014-12-13 18:14:23 +00:00			`VCS_FOLDERS="{.bzr,.cvs,.git,.hg,.svn}"`
Extract VCS folders definition to avoid repetition 2014-12-13 18:13:27 +00:00
set exclude-dir or exclude grep flags only if available 2014-03-24 07:17:19 +00:00			`if grep-flag-available --exclude-dir=.cvs; then`
Extract VCS folders definition to avoid repetition 2014-12-13 18:13:27 +00:00			`GREP_OPTIONS+=" --exclude-dir=$VCS_FOLDERS"`
set exclude-dir or exclude grep flags only if available 2014-03-24 07:17:19 +00:00			`elif grep-flag-available --exclude=.cvs; then`
Extract VCS folders definition to avoid repetition 2014-12-13 18:13:27 +00:00			`GREP_OPTIONS+=" --exclude=$VCS_FOLDERS"`
set exclude-dir or exclude grep flags only if available 2014-03-24 07:17:19 +00:00			`fi`

Tidy up the grep.zsh library 2014-12-13 18:36:57 +00:00			`# export grep settings`
Change to alias and remove deprecated GREP_COLOR 2014-11-24 12:08:39 +00:00			`alias grep="grep $GREP_OPTIONS"`
Tidy up the grep.zsh library 2014-12-13 18:36:57 +00:00
			`# clean up`
Change to alias and remove deprecated GREP_COLOR 2014-11-24 12:08:39 +00:00			`unset GREP_OPTIONS`
Tidy up the grep.zsh library 2014-12-13 18:36:57 +00:00			`unset VCS_FOLDERS`
			`unfunction grep-flag-available`