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Only add --color to grep's alias if that option is valid.

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The option `--color` is not available on all versions of grep. This change
verifies that the option is valid before adding it to the alias used by
default.
This commit is contained in:
Hugo Osvaldo Barrera 2015-02-02 13:14:39 -03:00
commit 427a7118ac
1 changed files with 5 additions and 1 deletions
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6
lib/grep.zsh
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@ -3,8 +3,12 @@ grep-flag-available() {
echo | grep $1 "" >/dev/null 2>&1
}
GREP_OPTIONS=""
# color grep results
GREP_OPTIONS="--color=auto"
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}"