Add usage string to git-update-index

This patch adds usage string to git-update-index, can be printed by the -h
or --help parameter.

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/update-index.c b/update-index.c
index a84836be4a0cd32a61d4ae35c8ce3b0108ad5a34..661b86a979e7c75ea9b3ca9d030aebb44693ee04 100644 (file)
--- a/update-index.c
+++ b/update-index.c
@@ -392,6 +392,9 @@ static void read_index_info(int line_termination)
        }
 }
 
+static const char update_index_usage[] =
+"git-update-index [-q] [--add] [--replace] [--remove] [--unmerged] [--refresh] [--cacheinfo] [--chmod=(+|-)x] [--info-only] [--force-remove] [--stdin] [--index-info] [--ignore-missing] [-z] [--version] [--] <file>...";
+
 int main(int argc, const char **argv)
 {
        int i, newfd, entries, has_errors = 0, line_termination = '\n';
@@ -489,6 +492,8 @@ int main(int argc, const char **argv)
                                verbose = 1;
                                continue;
                        }
+                       if (!strcmp(path, "-h") || !strcmp(path, "--help"))
+                               usage(update_index_usage);
                        die("unknown option %s", path);
                }
                update_one(path, prefix, prefix_length);