Make 'git' script be a bit more helpful on unrecognized commands

diff --git a/diff-cache.c b/diff-cache.c
index c097826719e4007122276a569db9f3732ee64f07..13baaa37217fd6e1c9313b2989071835c63dbfbd 100644 (file)
--- a/diff-cache.c
+++ b/diff-cache.c
@@ -9,6 +9,9 @@ static int diff_setup_opt = 0;
 static int diff_score_opt = 0;
 static const char *pickaxe = NULL;
 static int pickaxe_opts = 0;
+static int diff_break_opt = -1;
+static const char *orderfile = NULL;
+static const char *diff_filter = NULL;
 
 /* A file entry went away or appeared */
 static void show_file(const char *prefix, struct cache_entry *ce, unsigned char *sha1, unsigned int mode)
@@ -155,7 +158,7 @@ static void mark_merge_entries(void)
 }
 
 static char *diff_cache_usage =
-"git-diff-cache [-p] [-r] [-z] [-m] [-M] [-C] [-R] [-S<string>] [--cached] <tree-ish> [<path>...]";
+"git-diff-cache [-p] [-r] [-z] [-m] [-M] [-C] [-R] [-S<string>] [-O<orderfile>] [--cached] <tree-ish> [<path>...]";
 
 int main(int argc, const char **argv)
 {
@@ -165,13 +168,14 @@ int main(int argc, const char **argv)
        void *tree;
        unsigned long size;
        int ret;
+       int allow_options = 1;
        int i;
 
        read_cache();
        for (i = 1; i < argc; i++) {
                const char *arg = argv[i];
 
-               if (*arg != '-') {
+               if (!allow_options || *arg != '-') {
                        if (tree_name) {
                                pathspec = argv + i;
                                break;
@@ -180,6 +184,10 @@ int main(int argc, const char **argv)
                        continue;
                }
                        
+               if (!strcmp(arg, "--")) {
+                       allow_options = 0;
+                       continue;
+               }
                if (!strcmp(arg, "-r")) {
                        /* We accept the -r flag just to look like git-diff-tree */
                        continue;
@@ -188,14 +196,21 @@ int main(int argc, const char **argv)
                        diff_output_format = DIFF_FORMAT_PATCH;
                        continue;
                }
+               if (!strncmp(arg, "-B", 2)) {
+                       if ((diff_break_opt = diff_scoreopt_parse(arg)) == -1)
+                               usage(diff_cache_usage);
+                       continue;
+               }
                if (!strncmp(arg, "-M", 2)) {
                        detect_rename = DIFF_DETECT_RENAME;
-                       diff_score_opt = diff_scoreopt_parse(arg);
+                       if ((diff_score_opt = diff_scoreopt_parse(arg)) == -1)
+                               usage(diff_cache_usage);
                        continue;
                }
                if (!strncmp(arg, "-C", 2)) {
                        detect_rename = DIFF_DETECT_COPY;
-                       diff_score_opt = diff_scoreopt_parse(arg);
+                       if ((diff_score_opt = diff_scoreopt_parse(arg)) == -1)
+                               usage(diff_cache_usage);
                        continue;
                }
                if (!strcmp(arg, "-z")) {
@@ -210,6 +225,14 @@ int main(int argc, const char **argv)
                        pickaxe = arg + 2;
                        continue;
                }
+               if (!strncmp(arg, "--diff-filter=", 14)) {
+                       diff_filter = arg + 14;
+                       continue;
+               }
+               if (!strncmp(arg, "-O", 2)) {
+                       orderfile = arg + 2;
+                       continue;
+               }
                if (!strcmp(arg, "--pickaxe-all")) {
                        pickaxe_opts = DIFF_PICKAXE_ALL;
                        continue;
@@ -240,9 +263,12 @@ int main(int argc, const char **argv)
                die("unable to read tree object %s", tree_name);
 
        ret = diff_cache(active_cache, active_nr);
-       diffcore_std(pathspec,
+
+       diffcore_std(pathspec ? : NULL,
                     detect_rename, diff_score_opt,
-                    pickaxe, pickaxe_opts);
-       diff_flush(diff_output_format, 1);
+                    pickaxe, pickaxe_opts,
+                    diff_break_opt,
+                    orderfile, diff_filter);
+       diff_flush(diff_output_format);
        return ret;
 }