t: make PIPE a standard test prerequisite

diff --git a/git-submodule.sh b/git-submodule.sh
index ab29bfeb738d1b8f452c558ba6f6d7aa4e854b3d..b3108b8ea9983c524eb06831972c22773b3a56b1 100755 (executable)
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -266,6 +266,11 @@ module_clone()
        (clear_local_git_env; cd "$sm_path" && GIT_WORK_TREE=. git config core.worktree "$rel/$b")
 }
 
+isnumber()
+{
+       n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
+}
+
 #
 # Add a new submodule to the working tree, .gitmodules and the index
 #
@@ -814,14 +819,14 @@ cmd_summary() {
                        for_status="$1"
                        ;;
                -n|--summary-limit)
-                       if summary_limit=$(($2 + 0)) 2>/dev/null && test "$summary_limit" = "$2"
-                       then
-                               :
-                       else
-                               usage
-                       fi
+                       summary_limit="$2"
+                       isnumber "$summary_limit" || usage
                        shift
                        ;;
+               --summary-limit=*)
+                       summary_limit="${1#--summary-limit=}"
+                       isnumber "$summary_limit" || usage
+                       ;;
                --)
                        shift
                        break