From: Junio C Hamano Date: Mon, 23 Oct 2006 00:32:47 +0000 (-0700) Subject: rev-list --left-right X-Git-Tag: v1.5.0-rc0~53^2~3 X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=577ed5c;p=git.git rev-list --left-right The output from "symmetric diff", i.e. A...B, does not distinguish between commits that are reachable from A and the ones that are reachable from B. In this picture, such a symmetric diff includes commits marked with a and b. x---b---b branch B / \ / / . / / \ o---x---a---a branch A However, you cannot tell which ones are 'a' and which ones are 'b' from the output. Sometimes this is frustrating. This adds an output option, --left-right, to rev-list. rev-list --left-right A...B would show ones reachable from A prefixed with '<' and the ones reachable from B prefixed with '>'. When combined with --boundary, boundary commits (the ones marked with 'x' in the above picture) are shown with prefix '-', so you would see list that looks like this: git rev-list --left-right --boundary --pretty=oneline A...B >bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 3rd on b >bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 2nd on b --- diff --git a/builtin-rev-list.c b/builtin-rev-list.c index fb7fc9214..4364035e1 100644 --- a/builtin-rev-list.c +++ b/builtin-rev-list.c @@ -45,6 +45,7 @@ static int bisect_list; static int show_timestamp; static int hdr_termination; static const char *header_prefix; +static int show_left_right; static void show_commit(struct commit *commit) { @@ -54,6 +55,12 @@ static void show_commit(struct commit *commit) fputs(header_prefix, stdout); if (commit->object.flags & BOUNDARY) putchar('-'); + else if (show_left_right) { + if (commit->object.flags & SYMMETRIC_LEFT) + putchar('<'); + else + putchar('>'); + } if (revs.abbrev_commit && revs.abbrev) fputs(find_unique_abbrev(commit->object.sha1, revs.abbrev), stdout); @@ -240,6 +247,10 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix) bisect_list = 1; continue; } + if (!strcmp(arg, "--left-right")) { + show_left_right = 1; + continue; + } if (!strcmp(arg, "--stdin")) { if (read_from_stdin++) die("--stdin given twice?"); diff --git a/commit.c b/commit.c index a6d543eee..289ef65eb 100644 --- a/commit.c +++ b/commit.c @@ -868,11 +868,11 @@ void sort_in_topological_order_fn(struct commit_list ** list, int lifo, /* merge-rebase stuff */ -/* bits #0..7 in revision.h */ -#define PARENT1 (1u<< 8) -#define PARENT2 (1u<< 9) -#define STALE (1u<<10) -#define RESULT (1u<<11) +/* bits #0..15 in revision.h */ +#define PARENT1 (1u<<16) +#define PARENT2 (1u<<17) +#define STALE (1u<<18) +#define RESULT (1u<<19) static struct commit *interesting(struct commit_list *list) { diff --git a/revision.c b/revision.c index 993bb668a..3d989c3ed 100644 --- a/revision.c +++ b/revision.c @@ -344,6 +344,7 @@ static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit) static void add_parents_to_list(struct rev_info *revs, struct commit *commit, struct commit_list **list) { struct commit_list *parent = commit->parents; + unsigned left_flag; if (commit->object.flags & ADDED) return; @@ -388,6 +389,7 @@ static void add_parents_to_list(struct rev_info *revs, struct commit *commit, st if (revs->no_walk) return; + left_flag = (commit->object.flags & SYMMETRIC_LEFT); parent = commit->parents; while (parent) { struct commit *p = parent->item; @@ -395,6 +397,7 @@ static void add_parents_to_list(struct rev_info *revs, struct commit *commit, st parent = parent->next; parse_commit(p); + p->object.flags |= left_flag; if (p->object.flags & SEEN) continue; p->object.flags |= SEEN; @@ -640,7 +643,7 @@ int handle_revision_arg(const char *arg, struct rev_info *revs, add_pending_commit_list(revs, exclude, flags_exclude); free_commit_list(exclude); - a->object.flags |= flags; + a->object.flags |= flags | SYMMETRIC_LEFT; } else a->object.flags |= flags_exclude; b->object.flags |= flags; diff --git a/revision.h b/revision.h index 3adab9590..f92a4d437 100644 --- a/revision.h +++ b/revision.h @@ -9,6 +9,7 @@ #define BOUNDARY (1u<<5) #define BOUNDARY_SHOW (1u<<6) #define ADDED (1u<<7) /* Parents already parsed and added? */ +#define SYMMETRIC_LEFT (1u<<8) struct rev_info; struct log_info;