Tentative built-in "git show"

This uses the "--no-walk" flag that I never actually implemented (but I'm
sure I mentioned it) to make "git show" be essentially the same thing as
"git whatchanged --no-walk".

It just refuses to add more interesting parents to the revision walking
history, so you don't actually get any history, you just get the commit
you asked for.

I was going to add "--no-walk" as a real argument flag to git-rev-list
too, but I'm not sure anybody actually needs it. Although it might be
useful for porcelain, so I left the door open.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 15 insertions, 0 deletions

diff --git a/git.c b/git.c
index 939a34caf9..c87accfa1a 100644
--- a/git.c
+++ b/git.c
@@ -363,6 +363,20 @@ static int cmd_whatchanged(int ac, const char **av, char **ep)
 	return cmd_log_wc(ac, av, ep, &wcopt);
 }
 
+static int cmd_show(int ac, const char **av, char **ep)
+{
+	struct whatchanged_opt wcopt;
+
+	memset(&wcopt, 0, sizeof(wcopt));
+	wcopt.do_diff = 1;
+	init_log_tree_opt(&wcopt.logopt);
+	wcopt.logopt.ignore_merges = 0;
+	wcopt.logopt.combine_merges = 1;
+	wcopt.logopt.dense_combined_merges = 1;
+	wcopt.logopt.diffopt.recursive = 1;
+	return cmd_log_wc(ac, av, ep, &wcopt);
+}
+
 static void handle_internal_command(int argc, const char **argv, char **envp)
 {
 	const char *cmd = argv[0];
@@ -373,6 +387,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
 		{ "version", cmd_version },
 		{ "help", cmd_help },
 		{ "log", cmd_log },
+		{ "show", cmd_show },
 		{ "whatchanged", cmd_whatchanged },
 	};
 	int i;