[PATCH] git-apply: Don't barf when --stat'ing a diff with no line changes.

diff --git a/merge-cache.c b/merge-cache.c
index b2977cf16c3b1f98304bf4b1630947409560e80f..37c72d26ca587bd700412cd9d7cd99b08fd2da3a 100644 (file)
--- a/merge-cache.c
+++ b/merge-cache.c
@@ -5,6 +5,7 @@
 
 static const char *pgm = NULL;
 static const char *arguments[8];
+static int one_shot;
 static int err;
 
 static void run_program(void)
@@ -25,8 +26,12 @@ static void run_program(void)
                            NULL);
                die("unable to execute '%s'", pgm);
        }
-       if (waitpid(pid, &status, 0) < 0 || !WIFEXITED(status) || WEXITSTATUS(status))
-               err++;
+       if (waitpid(pid, &status, 0) < 0 || !WIFEXITED(status) || WEXITSTATUS(status)) {
+               if (one_shot)
+                       err++;
+               else
+                       die("merge program failed");
+       }
 }
 
 static int merge_entry(int pos, const char *path)
@@ -34,7 +39,7 @@ static int merge_entry(int pos, const char *path)
        int found;
        
        if (pos >= active_nr)
-               die("merge-cache: %s not in the cache", path);
+               die("git-merge-cache: %s not in the cache", path);
        arguments[0] = pgm;
        arguments[1] = "";
        arguments[2] = "";
@@ -59,7 +64,7 @@ static int merge_entry(int pos, const char *path)
                arguments[stage + 4] = ownbuf[stage];
        } while (++pos < active_nr);
        if (!found)
-               die("merge-cache: %s not in the cache", path);
+               die("git-merge-cache: %s not in the cache", path);
        run_program();
        return found;
 }
@@ -92,12 +97,17 @@ int main(int argc, char **argv)
        int i, force_file = 0;
 
        if (argc < 3)
-               usage("merge-cache <merge-program> (-a | <filename>*)");
+               usage("git-merge-cache [-o] <merge-program> (-a | <filename>*)");
 
        read_cache();
 
-       pgm = argv[1];
-       for (i = 2; i < argc; i++) {
+       i = 1;
+       if (!strcmp(argv[1], "-o")) {
+               one_shot = 1;
+               i++;
+       }
+       pgm = argv[i++];
+       for (; i < argc; i++) {
                char *arg = argv[i];
                if (!force_file && *arg == '-') {
                        if (!strcmp(arg, "--")) {
@@ -108,7 +118,7 @@ int main(int argc, char **argv)
                                merge_all();
                                continue;
                        }
-                       die("merge-cache: unknown option %s", arg);
+                       die("git-merge-cache: unknown option %s", arg);
                }
                merge_file(arg);
        }