revision: drop --show-all option

This was an undocumented debugging aid that does not seem to
have come in handy in the past decade, judging from its lack
of mentions on the mailing list.

Let's drop it in the name of simplicity. This is morally a
revert of 3131b71 (Add "--show-all" revision walker flag
for debugging, 2008-02-09), but note that I did leave in the
mapping of UNINTERESTING to "^" in get_revision_mark(). I
don't think this would be possible to trigger with the
current code, but it's the only sensible marker.

We'll skip the usual deprecation period because this was
explicitly a debugging aid that was never documented.

Signed-off-by: Jeff King <[email protected]>
Acked-by: Linus Torvalds <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: peff

revision.c

@@ -1055,14 +1055,9 @@ static int limit_list(struct rev_info *revs)
 			return -1;
 		if (obj->flags & UNINTERESTING) {
 			mark_parents_uninteresting(commit);
-			if (revs->show_all)
-				p = &commit_list_insert(commit, p)->next;
 			slop = still_interesting(list, date, slop, &interesting_cache);
 			if (slop)
 				continue;
-			/* If showing all, add the whole pending list to the end */
-			if (revs->show_all)
-				*p = list;
 			break;
 		}
 		if (revs->min_age != -1 && (commit->date > revs->min_age))
@@ -1853,8 +1848,6 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
 		revs->dense = 1;
 	} else if (!strcmp(arg, "--sparse")) {
 		revs->dense = 0;
-	} else if (!strcmp(arg, "--show-all")) {
-		revs->show_all = 1;
 	} else if (!strcmp(arg, "--in-commit-order")) {
 		revs->tree_blobs_in_commit_order = 1;
 	} else if (!strcmp(arg, "--remove-empty")) {
@@ -3061,8 +3054,6 @@ enum commit_action get_commit_action(struct rev_info *revs, struct commit *commi
 		return commit_ignore;
 	if (revs->unpacked && has_sha1_pack(commit->object.oid.hash))
 		return commit_ignore;
-	if (revs->show_all)
-		return commit_show;
 	if (commit->object.flags & UNINTERESTING)
 		return commit_ignore;
 	if (revs->min_age != -1 &&
@@ -3161,7 +3152,6 @@ enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit)
 	enum commit_action action = get_commit_action(revs, commit);
 
 	if (action == commit_show &&
-	    !revs->show_all &&
 	    revs->prune && revs->dense && want_ancestry(revs)) {
 		/*
 		 * --full-diff on simplified parents is no good: it

revision.h

@@ -90,7 +90,6 @@ struct rev_info {
 	unsigned int	dense:1,
 			prune:1,
 			no_walk:2,
-			show_all:1,
 			remove_empty_trees:1,
 			simplify_history:1,
 			topo_order:1,