Merge pull request #274 from tegonal/bc/grep-P-for-tagFilter

switch to grep -P for tagFilter, allows excluding via negative lookahead

Author: robstoll

src/utility/git-utils.sh

@@ -154,15 +154,15 @@ function latestRemoteTag() {
 	if (($# > 2)); then
 		logError "Maximum 2 arguments can be passed to latestRemoteTag, given \033[0;36m%s\033[0m\n" "$#"
 		echo >&2 '1: remote   	(optional) the name of the remote, defaults to origin'
-		echo >&2 '2: tagFilter	(optional) a regex pattern (as supported by grep -E) which allows to filter available tags before determining the latest, defaults to .* (i.e. include all)'
+		echo >&2 '2: tagFilter	(optional) a regex pattern (as supported by grep -P) which allows to filter available tags before determining the latest, defaults to .* (i.e. include all)'
 		printStackTrace
 		exit 9
 	fi
 	local -r remote=${1:-"origin"}
 	local -r tagFilter=${2:-".*"}
 	local tag
 	#shellcheck disable=SC2310			# we are aware of that || will disable set -e for remoteTagsSorted
-	tag=$(remoteTagsSorted "$remote" | grep -E "$tagFilter" | tail -n 1) || die "could not get remote tags sorted for remote %s, see above" "$remote"
+	tag=$(remoteTagsSorted "$remote" | grep -P "$tagFilter" | tail -n 1) || die "could not get remote tags sorted for remote %s, see above" "$remote"
 	if [[ -z $tag ]]; then
 		die "looks like remote \033[0;36m%s\033[0m does not have a tag yet." "$remote"
 	fi