Shell utilities: Guard against expr' magic tokens.
Some words, e.g., `match', are special to expr(1), and cause strange
parsing effects. Track down all uses of expr and mangle the arguments
so that this isn't a problem.
Signed-off-by: Mark Wooding <mdw@distorted.org.uk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/git-tag.sh b/git-tag.sh
index 76e51ed..dc6aa95 100755
--- a/git-tag.sh
+++ b/git-tag.sh
@@ -75,7 +75,7 @@
object=$(git-rev-parse --verify --default HEAD "$@") || exit 1
type=$(git-cat-file -t $object) || exit 1
tagger=$(git-var GIT_COMMITTER_IDENT) || exit 1
-: ${username:=$(expr "$tagger" : '\(.*>\)')}
+: ${username:=$(expr "z$tagger" : 'z\(.*>\)')}
trap 'rm -f "$GIT_DIR"/TAG_TMP* "$GIT_DIR"/TAG_FINALMSG "$GIT_DIR"/TAG_EDITMSG' 0
