Say when --track is useful in the git-checkout docs.

diff --git a/revision.c b/revision.c
index 7d32a89b0eca858113829e9219e80ff15e66e953..658471385cfaa2480ee78b19fe38fc51d9b51ab2 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -896,7 +896,8 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                        continue;
                argv[i] = NULL;
                argc = i;
-               revs->prune_data = get_pathspec(revs->prefix, argv + i + 1);
+               if (argv[i + 1])
+                       revs->prune_data = get_pathspec(revs->prefix, argv + i + 1);
                seen_dashdash = 1;
                break;
        }
@@ -1023,6 +1024,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                        }
                        if (!strcmp(arg, "--cherry-pick")) {
                                revs->cherry_pick = 1;
+                               revs->limited = 1;
                                continue;
                        }
                        if (!strcmp(arg, "--objects")) {
@@ -1207,8 +1209,6 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
 
                        opts = diff_opt_parse(&revs->diffopt, argv+i, argc-i);
                        if (opts > 0) {
-                               if (strcmp(argv[i], "-z"))
-                                       revs->diff = 1;
                                i += opts - 1;
                                continue;
                        }
@@ -1252,6 +1252,14 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                add_pending_object_with_mode(revs, object, def, mode);
        }
 
+       /* Did the user ask for any diff output? Run the diff! */
+       if (revs->diffopt.output_format & ~DIFF_FORMAT_NO_OUTPUT)
+               revs->diff = 1;
+
+       /* Pickaxe needs diffs */
+       if (revs->diffopt.pickaxe)
+               revs->diff = 1;
+
        if (revs->topo_order)
                revs->limited = 1;
 
@@ -1277,6 +1285,9 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                compile_grep_patterns(revs->grep_filter);
        }
 
+       if (revs->reverse && revs->reflog_info)
+               die("cannot combine --reverse with --walk-reflogs");
+
        return left;
 }