From: Johannes Schindelin <johannes.schindelin@xxxxxx>
This is consistent with `git commit` which, like `git merge`, supports
passing the commit message via `-m <msg>` and, unlike `git merge` before
this patch, via `-F <file>`.
It is useful to allow this for scripted use, or for the upcoming patch
to allow (re-)creating octopus merges in `git rebase --rebase-merges`.
Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
Documentation/git-merge.txt | 10 +++++++++-
builtin/merge.c | 32 ++++++++++++++++++++++++++++++++
2 files changed, 41 insertions(+), 1 deletion(-)
diff --git a/Documentation/git-merge.txt b/Documentation/git-merge.txt
index 6a5c00e2c..537dca7fa 100644
--- a/Documentation/git-merge.txt
+++ b/Documentation/git-merge.txt
@@ -12,7 +12,7 @@ SYNOPSIS
'git merge' [-n] [--stat] [--no-commit] [--squash] [--[no-]edit]
[-s <strategy>] [-X <strategy-option>] [-S[<keyid>]]
[--[no-]allow-unrelated-histories]
- [--[no-]rerere-autoupdate] [-m <msg>] [<commit>...]
+ [--[no-]rerere-autoupdate] [-m <msg>] [-F <file>] [<commit>...]
'git merge' --abort
'git merge' --continue
@@ -75,6 +75,14 @@ The 'git fmt-merge-msg' command can be
used to give a good default for automated 'git merge'
invocations. The automated message can include the branch description.
+-F <file>::
+--file=<file>::
+ Read the commit message to be used for the merge commit (in
+ case one is created).
++
+If `--log` is specified, a shortlog of the commits being merged
+will be appended to the specified message.
+
--[no-]rerere-autoupdate::
Allow the rerere mechanism to update the index with the
result of auto-conflict resolution if possible.
diff --git a/builtin/merge.c b/builtin/merge.c
index 4a4c09496..b0e907751 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -111,6 +111,35 @@ static int option_parse_message(const struct option *opt,
return 0;
}
+static int option_read_message(struct parse_opt_ctx_t *ctx,
+ const struct option *opt, int unset)
+{
+ struct strbuf *buf = opt->value;
+ const char *arg;
+
+ if (unset)
+ BUG("-F cannot be negated");
+
+ if (ctx->opt) {
+ arg = ctx->opt;
+ ctx->opt = NULL;
+ } else if (ctx->argc > 1) {
+ ctx->argc--;
+ arg = *++ctx->argv;
+ } else
+ return opterror(opt, "requires a value", 0);
+
+ if (buf->len)
+ strbuf_addch(buf, '\n');
+ if (ctx->prefix && !is_absolute_path(arg))
+ arg = prefix_filename(ctx->prefix, arg);
+ if (strbuf_read_file(buf, arg, 0) < 0)
+ return error(_("could not read file '%s'"), arg);
+ have_message = 1;
+
+ return 0;
+}
+
static struct strategy *get_strategy(const char *name)
{
int i;
@@ -228,6 +257,9 @@ static struct option builtin_merge_options[] = {
OPT_CALLBACK('m', "message", &merge_msg, N_("message"),
N_("merge commit message (for a non-fast-forward merge)"),
option_parse_message),
+ { OPTION_LOWLEVEL_CALLBACK, 'F', "file", &merge_msg, N_("path"),
+ N_("read message from file"), PARSE_OPT_NONEG,
+ (parse_opt_cb *) option_read_message },
OPT__VERBOSITY(&verbosity),
OPT_BOOL(0, "abort", &abort_current_merge,
N_("abort the current in-progress merge")),
--
gitgitgadget
