Merge branch 'bc/xdiffnl'

[git.git] / builtin-diff.c

diff --git a/builtin-diff.c b/builtin-diff.c
index 266337b832a020b97ab59cefb4ea1f05404fd00b..35da366f46009eab8eab693f7f56403d91d5d677 100644 (file)
--- a/builtin-diff.c
+++ b/builtin-diff.c
@@ -124,6 +124,8 @@ static int builtin_diff_index(struct rev_info *revs,
                        usage(builtin_diff_usage);
                argv++; argc--;
        }
+       if (!cached)
+               setup_work_tree();
        /*
         * Make sure there is one revision (i.e. pending object),
         * and there is no revision filtering parameters.
@@ -223,10 +225,17 @@ static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv
                argv++; argc--;
        }
 
-       if (revs->max_count == -1 &&
+       /*
+        * "diff --base" should not combine merges because it was not
+        * asked to.  "diff -c" should not densify (if the user wants
+        * dense one, --cc can be explicitly asked for, or just rely
+        * on the default).
+        */
+       if (revs->max_count == -1 && !revs->combine_merges &&
            (revs->diffopt.output_format & DIFF_FORMAT_PATCH))
                revs->combine_merges = revs->dense_combined_merges = 1;
 
+       setup_work_tree();
        if (read_cache() < 0) {
                perror("read_cache");
                return -1;