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-rwxr-xr-xgit-submodule.sh15
1 files changed, 12 insertions, 3 deletions
diff --git a/git-submodule.sh b/git-submodule.sh
index 204aab671e..0a27232b90 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -167,9 +167,18 @@ cmd_add()
;;
esac
- # strip trailing slashes from path
- path=$(echo "$path" | sed -e 's|/*$||')
-
+ # normalize path:
+ # multiple //; leading ./; /./; /../; trailing /
+ path=$(printf '%s/\n' "$path" |
+ sed -e '
+ s|//*|/|g
+ s|^\(\./\)*||
+ s|/\./|/|g
+ :start
+ s|\([^/]*\)/\.\./||
+ tstart
+ s|/*$||
+ ')
git ls-files --error-unmatch "$path" > /dev/null 2>&1 &&
die "'$path' already exists in the index"