From 78892e32616f00bf173496ca0502aff2e523db31 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 3 Nov 2008 11:25:46 -0800 Subject: [PATCH] revision traversal: '--simplify-by-decoration' With this, you can simplify history not by the contents of the tree, but whether a commit has been named (ie it's referred to by some branch or tag) or not. This makes it possible to see the relationship between different named commits, without actually seeing any of the details. When used with pathspec, you would get the usual view that is limited to the commits that change the contents of the tree plus commits that are named. Signed-off-by: Linus Torvalds Signed-off-by: Junio C Hamano --- revision.c | 27 +++++++++++++++++++++++++++ revision.h | 1 + 2 files changed, 28 insertions(+) diff --git a/revision.c b/revision.c index 56b09eb315..9dc55d4003 100644 --- a/revision.c +++ b/revision.c @@ -11,6 +11,7 @@ #include "reflog-walk.h" #include "patch-ids.h" #include "decorate.h" +#include "log-tree.h" volatile show_early_output_fn_t show_early_output; @@ -301,6 +302,24 @@ static int rev_compare_tree(struct rev_info *revs, struct commit *parent, struct if (!t1) return REV_TREE_NEW; + + if (revs->simplify_by_decoration) { + /* + * If we are simplifying by decoration, then the commit + * is worth showing if it has a tag pointing at it. + */ + if (lookup_decoration(&name_decoration, &commit->object)) + return REV_TREE_DIFFERENT; + /* + * A commit that is not pointed by a tag is uninteresting + * if we are not limited by path. This means that you will + * see the usual "commits that touch the paths" plus any + * tagged commit by specifying both --simplify-by-decoration + * and pathspec. + */ + if (!revs->prune_data) + return REV_TREE_SAME; + } if (!t2) return REV_TREE_DIFFERENT; tree_difference = REV_TREE_SAME; @@ -1041,6 +1060,14 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg revs->rewrite_parents = 1; revs->simplify_history = 0; revs->limited = 1; + } else if (!strcmp(arg, "--simplify-by-decoration")) { + revs->simplify_merges = 1; + revs->rewrite_parents = 1; + revs->simplify_history = 0; + revs->simplify_by_decoration = 1; + revs->limited = 1; + revs->prune = 1; + load_ref_decorations(); } else if (!strcmp(arg, "--date-order")) { revs->lifo = 0; revs->topo_order = 1; diff --git a/revision.h b/revision.h index 0a1806a9e1..7cf848771b 100644 --- a/revision.h +++ b/revision.h @@ -43,6 +43,7 @@ struct rev_info { lifo:1, topo_order:1, simplify_merges:1, + simplify_by_decoration:1, tag_objects:1, tree_objects:1, blob_objects:1,