From 042a4ed7c51f909fa53a8fa2f1024a1938812f27 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 26 Jun 2005 11:34:30 -0700 Subject: [PATCH] git-rev-parse: add "--not" flag to mark subsequent heads negative If you have two lists of heads, and you want to see ones reachable from list $a but not from list $b, just do git-rev-list $(git-rev-parse $a --not $b) which is useful for both bisecting (where "b" would be the list of known good revisions, and "a" would be the latest found bad head) and for just seeing what the difference between two sets of heads are if you want to generate a pack-file for the difference. --- rev-parse.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/rev-parse.c b/rev-parse.c index 9249fa57d..c134ffda1 100644 --- a/rev-parse.c +++ b/rev-parse.c @@ -13,6 +13,10 @@ static int revs_only = 0; static int do_rev_argument = 1; static int output_revs = 0; +#define NORMAL 0 +#define REVERSED 1 +static int show_type = NORMAL; + static int get_extended_sha1(char *name, unsigned char *sha1); /* @@ -42,20 +46,12 @@ static int is_rev_argument(const char *arg) } } -static void show_rev(unsigned char *sha1) +static void show_rev(int type, unsigned char *sha1) { if (no_revs) return; output_revs++; - puts(sha1_to_hex(sha1)); -} - -static void show_antirev(unsigned char *sha1) -{ - if (no_revs) - return; - output_revs++; - printf("^%s\n", sha1_to_hex(sha1)); + printf("%s%s\n", type == show_type ? "" : "^", sha1_to_hex(sha1)); } static void show_rev_arg(char *rev) @@ -139,7 +135,7 @@ static void show_default(void) def = NULL; if (!get_extended_sha1(s, sha1)) { - show_rev(sha1); + show_rev(NORMAL, sha1); return; } show_arg(s); @@ -185,6 +181,10 @@ int main(int argc, char **argv) single_rev = 1; continue; } + if (!strcmp(arg, "--not")) { + show_type ^= REVERSED; + continue; + } show_arg(arg); continue; } @@ -200,8 +200,8 @@ int main(int argc, char **argv) if (no_revs) continue; def = NULL; - show_rev(end); - show_antirev(sha1); + show_rev(NORMAL, end); + show_rev(REVERSED, sha1); continue; } } @@ -211,14 +211,14 @@ int main(int argc, char **argv) if (no_revs) continue; def = NULL; - show_rev(sha1); + show_rev(NORMAL, sha1); continue; } if (*arg == '^' && !get_extended_sha1(arg+1, sha1)) { if (no_revs) continue; def = NULL; - show_antirev(sha1); + show_rev(REVERSED, sha1); continue; } show_default(); -- 2.26.2