Shell utilities: Guard against expr' magic tokens.

[git.git] / git-tag.sh

diff --git a/git-tag.sh b/git-tag.sh
index 76e51ed174c3f8e752d221374ec83b1f1db7fde5..dc6aa9576764d7c2da98fbe15339df685fd8b94c 100755 (executable)
--- a/git-tag.sh
+++ b/git-tag.sh
@@ -75,7 +75,7 @@ git-check-ref-format "tags/$name" ||
 object=$(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