From: Kenny Lee Sin Cheong Date: Mon, 16 Mar 2015 15:11:43 GMT Subject: [PATCH 2/2] Add revision range support on "-" and "@{-1}" Message-ID: <1426518703-15785-3-git-send-email-kenny.lee28@gmail.com> In-Reply-To: <1426518703-15785-1-git-send-email-kenny.lee28@gmail.com> Currently it is not be possible to do something like "git checkout master && git checkout next && git log -.." to see what master has on top of master. Allows use of the revision range such as ..- or -.. to see what HEAD has on top of or vice versa, respectively. Also allows use of symmetric differences such as ...- and -... This is written on top of Junio's "Just For Fun" patch ($Gmane/265260). Signed-off-by: Kenny Lee Sin Cheong --- revision.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/revision.c b/revision.c index 7778bbd..a79b443 100644 --- a/revision.c +++ b/revision.c @@ -1490,6 +1490,7 @@ int handle_revision_arg(const char *arg_, struct rev_info *revs, int flags, unsi int symmetric = *next == '.'; unsigned int flags_exclude = flags ^ (UNINTERESTING | BOTTOM); static const char head_by_default[] = "HEAD"; + static const char prev_rev[] = "@{-1}"; unsigned int a_flags; *dotdot = 0; @@ -1499,6 +1500,13 @@ int handle_revision_arg(const char *arg_, struct rev_info *revs, int flags, unsi next = head_by_default; if (dotdot == arg) this = head_by_default; + /* Allows -.. and ..- */ + if (!strcmp(this, "-")) { + this = prev_rev; + } + if (!strcmp(next, "-")) { + next = prev_rev; + } if (this == head_by_default && next == head_by_default && !symmetric) { /* @@ -2198,7 +2206,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s read_from_stdin = 0; for (left = i = 1; i < argc; i++) { const char *arg = argv[i]; - if (arg[0] == '-' && arg[1]) { + if (arg[0] == '-' && !strstr(arg, "..")) { int opts; opts = handle_revision_pseudo_opt(submodule, @@ -2220,6 +2228,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s continue; } + opts = handle_revision_opt(revs, argc - i, argv + i, &left, argv); if (opts > 0) { i += opts - 1; @@ -2229,7 +2238,10 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s exit(128); continue; } - + if (strstr(arg, "..")) { + handle_revision_arg(arg, revs, flags, revarg_opt); + continue; + } if (handle_revision_arg(arg, revs, flags, revarg_opt)) { int j; -- 2.3.2.225.gebdc58a