Add clean.requireForce option, and add -f option to git-clean to override it

diff --git a/builtin-diff.c b/builtin-diff.c
index c387ebb16c6bd353a84abd9454892eeab309ef1e..2ae60097b8cfddd873a38f3988185d9fde77f511 100644 (file)
--- a/builtin-diff.c
+++ b/builtin-diff.c
@@ -25,40 +25,6 @@ struct blobinfo {
 static const char builtin_diff_usage[] =
 "git-diff <options> <rev>{0,2} -- <path>*";
 
-static int builtin_diff_files(struct rev_info *revs,
-                             int argc, const char **argv)
-{
-       int silent = 0;
-       while (1 < argc) {
-               const char *arg = argv[1];
-               if (!strcmp(arg, "--base"))
-                       revs->max_count = 1;
-               else if (!strcmp(arg, "--ours"))
-                       revs->max_count = 2;
-               else if (!strcmp(arg, "--theirs"))
-                       revs->max_count = 3;
-               else if (!strcmp(arg, "-q"))
-                       silent = 1;
-               else
-                       usage(builtin_diff_usage);
-               argv++; argc--;
-       }
-       /*
-        * Make sure there are NO revision (i.e. pending object) parameter,
-        * specified rev.max_count is reasonable (0 <= n <= 3), and
-        * there is no other revision filtering parameter.
-        */
-       if (revs->pending.nr ||
-           revs->min_age != -1 ||
-           revs->max_age != -1 ||
-           3 < revs->max_count)
-               usage(builtin_diff_usage);
-       if (revs->max_count < 0 &&
-           (revs->diffopt.output_format & DIFF_FORMAT_PATCH))
-               revs->combine_merges = revs->dense_combined_merges = 1;
-       return run_diff_files(revs, silent);
-}
-
 static void stuff_change(struct diff_options *opt,
                         unsigned old_mode, unsigned new_mode,
                         const unsigned char *old_sha1,
@@ -151,6 +117,10 @@ static int builtin_diff_index(struct rev_info *revs,
            revs->max_count != -1 || revs->min_age != -1 ||
            revs->max_age != -1)
                usage(builtin_diff_usage);
+       if (read_cache() < 0) {
+               perror("read_cache");
+               return -1;
+       }
        return run_diff_index(revs, cached);
 }
 
@@ -219,6 +189,8 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
        int ents = 0, blobs = 0, paths = 0;
        const char *path = NULL;
        struct blobinfo blob[2];
+       int nongit = 0;
+       int result = 0;
 
        /*
         * We could get N tree-ish in the rev.pending_objects list.
@@ -240,15 +212,20 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
         * Other cases are errors.
         */
 
+       prefix = setup_git_directory_gently(&nongit);
        git_config(git_diff_ui_config);
        init_revisions(&rev, prefix);
 
-       argc = setup_revisions(argc, argv, &rev, NULL);
+       if (!setup_diff_no_index(&rev, argc, argv, nongit, prefix))
+               argc = 0;
+       else
+               argc = setup_revisions(argc, argv, &rev, NULL);
        if (!rev.diffopt.output_format) {
                rev.diffopt.output_format = DIFF_FORMAT_PATCH;
                if (diff_setup_done(&rev.diffopt) < 0)
                        die("diff_setup_done failed");
        }
+       rev.diffopt.allow_external = 1;
 
        /* Do we have --cached and not have a pending object, then
         * default to HEAD by hand.  Eek.
@@ -261,6 +238,8 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
                                break;
                        else if (!strcmp(arg, "--cached")) {
                                add_head(&rev);
+                               if (!rev.pending.nr)
+                                       die("No HEAD commit to compare with (yet)");
                                break;
                        }
                }
@@ -315,17 +294,17 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
        if (!ents) {
                switch (blobs) {
                case 0:
-                       return builtin_diff_files(&rev, argc, argv);
+                       result = run_diff_files_cmd(&rev, argc, argv);
                        break;
                case 1:
                        if (paths != 1)
                                usage(builtin_diff_usage);
-                       return builtin_diff_b_f(&rev, argc, argv, blob, path);
+                       result = builtin_diff_b_f(&rev, argc, argv, blob, path);
                        break;
                case 2:
                        if (paths)
                                usage(builtin_diff_usage);
-                       return builtin_diff_blobs(&rev, argc, argv, blob);
+                       result = builtin_diff_blobs(&rev, argc, argv, blob);
                        break;
                default:
                        usage(builtin_diff_usage);
@@ -334,19 +313,21 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
        else if (blobs)
                usage(builtin_diff_usage);
        else if (ents == 1)
-               return builtin_diff_index(&rev, argc, argv);
+               result = builtin_diff_index(&rev, argc, argv);
        else if (ents == 2)
-               return builtin_diff_tree(&rev, argc, argv, ent);
+               result = builtin_diff_tree(&rev, argc, argv, ent);
        else if ((ents == 3) && (ent[0].item->flags & UNINTERESTING)) {
                /* diff A...B where there is one sane merge base between
                 * A and B.  We have ent[0] == merge-base, ent[1] == A,
                 * and ent[2] == B.  Show diff between the base and B.
                 */
                ent[1] = ent[2];
-               return builtin_diff_tree(&rev, argc, argv, ent);
+               result = builtin_diff_tree(&rev, argc, argv, ent);
        }
        else
-               return builtin_diff_combined(&rev, argc, argv,
+               result = builtin_diff_combined(&rev, argc, argv,
                                             ent, ents);
-       usage(builtin_diff_usage);
+       if (rev.diffopt.exit_with_status)
+               result = rev.diffopt.has_changes;
+       return result;
 }