From: Junio C Hamano <junkio@cox.net>
Date: Tue, 28 Mar 2006 02:54:45 GMT
Subject: Re: Gitk strangeness..
Message-ID: <7vr74nmg7e.fsf@assigned-by-dhcp.cox.net>
In-Reply-To: <17448.40941.256361.866229@cargo.ozlabs.ibm.com>

Paul Mackerras <paulus@samba.org> writes:

> The other option would be to make git-rev-list list the open-circle
> commits explicitly, with an indication that they are not in the
> requested set but are parents of commits in the requested set.

I might be off the mark, but are you thinking about something
like the attached patch?

> Do you think that having the open-circle commits in the graph is
> useful?

Of course.

-- >8 --
rev-list: --parents-with-boundary

The new flag acts like --parents, but uninteresting parents are
marked by prefied '-' sign.

        $ git-rev-list --parents-with-boundary HEAD^^..HEAD
        acb7257... 9c48666...
        9c48666... -dff86e2..

---
diff --git a/rev-list.c b/rev-list.c
index 441c437..58fc449 100644
--- a/rev-list.c
+++ b/rev-list.c
@@ -39,6 +39,8 @@
 static int bisect_list = 0;
 static int verbose_header = 0;
 static int abbrev = DEFAULT_ABBREV;
+#define SHOW_PARENTS 1
+#define SHOW_PARENTS_BOUNDARY 2
 static int show_parents = 0;
 static int show_timestamp = 0;
 static int hdr_termination = 0;
@@ -59,7 +61,11 @@
 			parents = parents->next;
 			if (o->flags & TMP_MARK)
 				continue;
-			printf(" %s", sha1_to_hex(o->sha1));
+			if (show_parents == SHOW_PARENTS_BOUNDARY &&
+			    o->flags & UNINTERESTING)
+				printf(" -%s", sha1_to_hex(o->sha1));
+			else
+				printf(" %s", sha1_to_hex(o->sha1));
 			o->flags |= TMP_MARK;
 		}
 		/* TMP_MARK is a general purpose flag that can
@@ -337,7 +343,11 @@
 			continue;
 		}
 		if (!strcmp(arg, "--parents")) {
-			show_parents = 1;
+			show_parents = SHOW_PARENTS;
+			continue;
+		}
+		if (!strcmp(arg, "--parents-with-boundary")) {
+			show_parents = SHOW_PARENTS_BOUNDARY;
 			continue;
 		}
 		if (!strcmp(arg, "--timestamp")) {