From 9202434cbdfb123f41fc677bbf36ff21f6094fc8 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 11 Jun 2006 10:57:35 -0700 Subject: [PATCH] gitweb.cgi history not shown This does: - add a "rev.simplify_history" flag which defaults to on - it turns it off for "git whatchanged" (which thus now has real semantics outside of "git log") - it adds a command line flag ("--full-history") to turn it off for others (ie you can make "git log" and "gitk" etc get the semantics if you want to. Now, just as an example of _why_ you really really really want to simplify history by default, apply this patch, install it, and try these two command lines: gitk --full-history -- git.c gitk -- git.c and compare the output. So with this, you can also now do git whatchanged -p -- gitweb.cgi git log -p --full-history -- gitweb.cgi and it will show the old history of gitweb.cgi, even though it's not relevant to the _current_ state of the name "gitweb.cgi" NOTE NOTE NOTE! It will still actually simplify away merges that didn't change anything at all into either child. That creates these bogus strange discontinuities if you look at it with "gitk" (look at the --full-history gitk output for git.c, and you'll see a few strange cases). So the whole "--parent" thing ends up somewhat bogus with --full-history because of this, but I'm not sure it's worth even worrying about. I don't think you'd ever want to really use "--full-history" with the graphical representation, I just give it as an example exactly to show _why_ doing so would be insane. I think this is trivial enough and useful enough to be worth merging into the stable branch. Signed-off-by: Linus Torvalds Signed-off-by: Junio C Hamano --- builtin-log.c | 1 + revision.c | 7 ++++++- revision.h | 1 + 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/builtin-log.c b/builtin-log.c index 5b0ea2834..f4d974a7b 100644 --- a/builtin-log.c +++ b/builtin-log.c @@ -51,6 +51,7 @@ int cmd_whatchanged(int argc, const char **argv, char **envp) init_revisions(&rev); rev.diff = 1; rev.diffopt.recursive = 1; + rev.simplify_history = 0; return cmd_log_wc(argc, argv, envp, &rev); } diff --git a/revision.c b/revision.c index 6a6952cd5..75c648c13 100644 --- a/revision.c +++ b/revision.c @@ -303,7 +303,7 @@ static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit) parse_commit(p); switch (rev_compare_tree(revs, p->tree, commit->tree)) { case REV_TREE_SAME: - if (p->object.flags & UNINTERESTING) { + if (!revs->simplify_history || (p->object.flags & UNINTERESTING)) { /* Even if a merge with an uninteresting * side branch brought the entire change * we are interested in, we do not want @@ -519,6 +519,7 @@ void init_revisions(struct rev_info *revs) revs->abbrev = DEFAULT_ABBREV; revs->ignore_merges = 1; + revs->simplify_history = 1; revs->pruning.recursive = 1; revs->pruning.add_remove = file_add_remove; revs->pruning.change = file_change; @@ -756,6 +757,10 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch revs->full_diff = 1; continue; } + if (!strcmp(arg, "--full-history")) { + revs->simplify_history = 0; + continue; + } opts = diff_opt_parse(&revs->diffopt, argv+i, argc-i); if (opts > 0) { revs->diff = 1; diff --git a/revision.h b/revision.h index 7d85b0f2e..4020e25c3 100644 --- a/revision.h +++ b/revision.h @@ -30,6 +30,7 @@ struct rev_info { no_merges:1, no_walk:1, remove_empty_trees:1, + simplify_history:1, lifo:1, topo_order:1, tag_objects:1, -- 2.30.2