replay: change rev walking options

Let's force the rev walking options we need after calling
setup_revisions() instead of before.

This might override some user supplied rev walking command line options
though. So let's detect that and warn users by:

  a) setting the desired values, before setup_revisions(),
  b) checking after setup_revisions() whether these values differ from
     the desired values,
  c) if so throwing a warning and setting the desired values again.

We want the command to work from older commits to newer ones by default.
Also we don't want history simplification, as we want to deal with all
the commits in the affected range.

Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Co-authored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 41 insertions, 7 deletions

diff --git a/builtin/replay.c b/builtin/replay.c
index d039467cd4..2f664218be 100644
--- a/builtin/replay.c
+++ b/builtin/replay.c
@@ -173,22 +173,56 @@ int cmd_replay(int argc, const char **argv, const char *prefix)
 
 	repo_init_revisions(the_repository, &revs, prefix);
 
-	revs.verbose_header = 1;
-	revs.max_parents = 1;
-	revs.cherry_mark = 1;
-	revs.limited = 1;
+	strvec_pushl(&rev_walk_args, "", argv[2], "--not", argv[1], NULL);
+
+	/*
+	 * Set desired values for rev walking options here. If they
+	 * are changed by some user specified option in setup_revisions()
+	 * below, we will detect that below and then warn.
+	 *
+	 * TODO: In the future we might want to either die(), or allow
+	 * some options changing these values if we think they could
+	 * be useful.
+	 */
 	revs.reverse = 1;
-	revs.right_only = 1;
 	revs.sort_order = REV_SORT_IN_GRAPH_ORDER;
 	revs.topo_order = 1;
-
-	strvec_pushl(&rev_walk_args, "", argv[2], "--not", argv[1], NULL);
+	revs.simplify_history = 0;
 
 	if (setup_revisions(rev_walk_args.nr, rev_walk_args.v, &revs, NULL) > 1) {
 		ret = error(_("unhandled options"));
 		goto cleanup;
 	}
 
+	/*
+	 * Detect and warn if we override some user specified rev
+	 * walking options.
+	 */
+	if (revs.reverse != 1) {
+		warning(_("some rev walking options will be overridden as "
+			  "'%s' bit in 'struct rev_info' will be forced"),
+			"reverse");
+		revs.reverse = 1;
+	}
+	if (revs.sort_order != REV_SORT_IN_GRAPH_ORDER) {
+		warning(_("some rev walking options will be overridden as "
+			  "'%s' bit in 'struct rev_info' will be forced"),
+			"sort_order");
+		revs.sort_order = REV_SORT_IN_GRAPH_ORDER;
+	}
+	if (revs.topo_order != 1) {
+		warning(_("some rev walking options will be overridden as "
+			  "'%s' bit in 'struct rev_info' will be forced"),
+			"topo_order");
+		revs.topo_order = 1;
+	}
+	if (revs.simplify_history != 0) {
+		warning(_("some rev walking options will be overridden as "
+			  "'%s' bit in 'struct rev_info' will be forced"),
+			"simplify_history");
+		revs.simplify_history = 0;
+	}
+
 	strvec_clear(&rev_walk_args);
 
 	if (prepare_revision_walk(&revs) < 0) {