use "sentinel" function attribute for variadic lists

diff --git a/submodule.c b/submodule.c
index 9ba149654322840323cf2d8f4980fa09e56f4068..e728025f60dbf7f3df87b7104af6410832ddb653 100644 (file)
--- a/submodule.c
+++ b/submodule.c
@@ -216,6 +216,7 @@ static int prepare_submodule_summary(struct rev_info *rev, const char *path,
 }
 
 static void print_submodule_summary(struct rev_info *rev, FILE *f,
+               const char *line_prefix,
                const char *del, const char *add, const char *reset)
 {
        static const char format[] = "  %m %s";
@@ -226,6 +227,7 @@ static void print_submodule_summary(struct rev_info *rev, FILE *f,
                struct pretty_print_context ctx = {0};
                ctx.date_mode = rev->date_mode;
                strbuf_setlen(&sb, 0);
+               strbuf_addstr(&sb, line_prefix);
                if (commit->object.flags & SYMMETRIC_LEFT) {
                        if (del)
                                strbuf_addstr(&sb, del);
@@ -256,12 +258,13 @@ int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg)
 }
 
 void show_submodule_summary(FILE *f, const char *path,
+               const char *line_prefix,
                unsigned char one[20], unsigned char two[20],
                unsigned dirty_submodule, const char *meta,
                const char *del, const char *add, const char *reset)
 {
        struct rev_info rev;
-       struct commit *left = left, *right = right;
+       struct commit *left = NULL, *right = NULL;
        const char *message = NULL;
        struct strbuf sb = STRBUF_INIT;
        int fast_forward = 0, fast_backward = 0;
@@ -275,23 +278,23 @@ void show_submodule_summary(FILE *f, const char *path,
        else if (!(left = lookup_commit_reference(one)) ||
                 !(right = lookup_commit_reference(two)))
                message = "(commits not present)";
-
-       if (!message &&
-           prepare_submodule_summary(&rev, path, left, right,
-                                       &fast_forward, &fast_backward))
+       else if (prepare_submodule_summary(&rev, path, left, right,
+                                          &fast_forward, &fast_backward))
                message = "(revision walker failed)";
 
        if (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
-               fprintf(f, "Submodule %s contains untracked content\n", path);
+               fprintf(f, "%sSubmodule %s contains untracked content\n",
+                       line_prefix, path);
        if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
-               fprintf(f, "Submodule %s contains modified content\n", path);
+               fprintf(f, "%sSubmodule %s contains modified content\n",
+                       line_prefix, path);
 
        if (!hashcmp(one, two)) {
                strbuf_release(&sb);
                return;
        }
 
-       strbuf_addf(&sb, "%sSubmodule %s %s..", meta, path,
+       strbuf_addf(&sb, "%s%sSubmodule %s %s..", line_prefix, meta, path,
                        find_unique_abbrev(one, DEFAULT_ABBREV));
        if (!fast_backward && !fast_forward)
                strbuf_addch(&sb, '.');
@@ -302,11 +305,12 @@ void show_submodule_summary(FILE *f, const char *path,
                strbuf_addf(&sb, "%s:%s\n", fast_backward ? " (rewind)" : "", reset);
        fwrite(sb.buf, sb.len, 1, f);
 
-       if (!message) {
-               print_submodule_summary(&rev, f, del, add, reset);
+       if (!message) /* only NULL if we succeeded in setting up the walk */
+               print_submodule_summary(&rev, f, line_prefix, del, add, reset);
+       if (left)
                clear_commit_marks(left, ~0);
+       if (right)
                clear_commit_marks(right, ~0);
-       }
 
        strbuf_release(&sb);
 }