--q::
---quiet::
- Operate quietly.
-
--v::
---verbose::
- Be verbose.
-
---stat::
- Show a diffstat at the end of the merge. The diffstat is also
- controlled by the configuration option merge.stat.
-
--n::
---no-stat::
- Do not show a diffstat at the end of the merge.
+--commit::
+--no-commit::
+ Perform the merge and commit the result. This option can
+ be used to override --no-commit.
++
+With --no-commit perform the merge but pretend the merge
+failed and do not autocommit, to give the user a chance to
+inspect and further tweak the merge result before committing.
---summary::
---no-summary::
- Synonyms to --stat and --no-stat; these are deprecated and will be
- removed in the future.
+--ff::
+--no-ff::
+ Do not generate a merge commit if the merge resolved as
+ a fast-forward, only update the branch pointer. This is
+ the default behavior of git-merge.
++
+With --no-ff Generate a merge commit even if the merge
+resolved as a fast-forward.
--log::
+--no-log::
In addition to branch names, populate the log message with
one-line descriptions from the actual commits that are being
merged.
++
+With --no-log do not list one-line descriptions from the
+actual commits being merged.
---no-log::
- Do not list one-line descriptions from the actual commits being
- merged.
-
---no-commit::
- Perform the merge but pretend the merge failed and do
- not autocommit, to give the user a chance to inspect and
- further tweak the merge result before committing.
---commit::
- Perform the merge and commit the result. This option can
- be used to override --no-commit.
+--stat::
+-n::
+--no-stat::
+ Show a diffstat at the end of the merge. The diffstat is also
+ controlled by the configuration option merge.stat.
++
+With -n or --no-stat do not show a diffstat at the end of the
+merge.
--squash::
+--no-squash::
Produce the working tree and index state as if a real
merge happened (except for the merge information),
but do not actually make a commit or
commit. This allows you to create a single commit on
top of the current branch whose effect is the same as
merging another branch (or more in case of an octopus).
-
---no-squash::
- Perform the merge and commit the result. This option can
- be used to override --squash.
-
---no-ff::
- Generate a merge commit even if the merge resolved as a
- fast-forward.
-
---ff::
- Do not generate a merge commit if the merge resolved as
- a fast-forward, only update the branch pointer. This is
- the default behavior of git-merge.
++
+With --no-squash perform the merge and commit the result. This
+option can be used to override --squash.
+ --ff-only::
+ Refuse to merge and exit with a non-zero status unless the
+ current `HEAD` is already up-to-date or the merge can be
+ resolved as a fast-forward.
+
-s <strategy>::
--strategy=<strategy>::
Use the given merge strategy; can be supplied more than
If there is no `-s` option, a built-in list of strategies
is used instead ('git-merge-recursive' when merging a single
head, 'git-merge-octopus' otherwise).
+
+--summary::
+--no-summary::
+ Synonyms to --stat and --no-stat; these are deprecated and will be
+ removed in the future.
+
+-q::
+--quiet::
+ Operate quietly.
+
+-v::
+--verbose::
+ Be verbose.
static int show_diffstat = 1, option_log, squash;
static int option_commit = 1, allow_fast_forward = 1;
+ static int fast_forward_only;
static int allow_trivial = 1, have_message;
static struct strbuf merge_msg;
static struct commit_list *remoteheads;
"perform a commit if the merge succeeds (default)"),
OPT_BOOLEAN(0, "ff", &allow_fast_forward,
"allow fast forward (default)"),
+ OPT_BOOLEAN(0, "ff-only", &fast_forward_only,
+ "abort if fast forward is not possible"),
OPT_CALLBACK('s', "strategy", &use_strategies, "strategy",
"merge strategy to use", option_parse_strategy),
OPT_CALLBACK('m', "message", &merge_msg, "message",
struct strbuf out = STRBUF_INIT;
struct commit_list *j;
int fd;
+ struct pretty_print_context ctx = {0};
printf("Squash commit -- not updating HEAD\n");
fd = open(git_path("SQUASH_MSG"), O_WRONLY | O_CREAT, 0666);
if (prepare_revision_walk(&rev))
die("revision walk setup failed");
+ ctx.abbrev = rev.abbrev;
+ ctx.date_mode = rev.date_mode;
+
strbuf_addstr(&out, "Squashed commit of the following:\n");
while ((commit = get_revision(&rev)) != NULL) {
strbuf_addch(&out, '\n');
strbuf_addf(&out, "commit %s\n",
sha1_to_hex(commit->object.sha1));
- pretty_print_commit(rev.commit_format, commit, &out, rev.abbrev,
- NULL, NULL, rev.date_mode, 0);
+ pretty_print_commit(rev.commit_format, commit, &out, &ctx);
}
if (write(fd, out.buf, out.len) < 0)
die_errno("Writing SQUASH_MSG");
option_commit = 0;
}
+ if (!allow_fast_forward && fast_forward_only)
+ die("You cannot combine --no-ff with --ff-only.");
+
if (!argc)
usage_with_options(builtin_merge_usage,
builtin_merge_options);
* only one common.
*/
refresh_cache(REFRESH_QUIET);
- if (allow_trivial) {
+ if (allow_trivial && !fast_forward_only) {
/* See if it is really trivial. */
git_committer_info(IDENT_ERROR_ON_NO_NAME);
printf("Trying really trivial in-index merge...\n");
}
}
+ if (fast_forward_only)
+ die("Not possible to fast forward, aborting.");
+
/* We are going to make a new commit. */
git_committer_info(IDENT_ERROR_ON_NO_NAME);