Show usage string for 'git fast-import -h'

diff --git a/builtin-diff-files.c b/builtin-diff-files.c
index 9bf10bb37e2f56ec2a10239d7419db8fbb641745..5b64011de8222f06b5c772a6461278dea152919e 100644 (file)
--- a/builtin-diff-files.c
+++ b/builtin-diff-files.c
@@ -50,12 +50,17 @@ int cmd_diff_files(int argc, const char **argv, const char *prefix)
            3 < rev.max_count)
                usage(diff_files_usage);
 
-       if (rev.max_count == -1 &&
+       /*
+        * "diff-files --base -p" should not combine merges because it
+        * was not asked to.  "diff-files -c -p" should not densify
+        * (the user should ask with "diff-files --cc" explicitly).
+        */
+       if (rev.max_count == -1 && !rev.combine_merges &&
            (rev.diffopt.output_format & DIFF_FORMAT_PATCH))
                rev.combine_merges = rev.dense_combined_merges = 1;
 
-       if (read_cache() < 0) {
-               perror("read_cache");
+       if (read_cache_preload(rev.diffopt.paths) < 0) {
+               perror("read_cache_preload");
                return -1;
        }
        result = run_diff_files(&rev, options);