Re: feature suggestion: optimize common parts for checkout --conflict=diff3

[Antoine Pelisse <apelisse@gmail.com>]

>         git checkout --conflict=diff3 file

That's somehow unrelated, but shouldn't we have a "conflict" option to
git-merge as we have for git-checkout ?

With something like this (pasted into gmail):

diff --git a/builtin/merge.c b/builtin/merge.c
index 7c8922c..edad742 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -65,6 +65,7 @@ static int abort_current_merge;
 static int show_progress = -1;
 static int default_to_upstream;
 static const char *sign_commit;
+static char *conflict_style;

 static struct strategy all_strategy[] = {
  { "recursive",  DEFAULT_TWOHEAD | NO_TRIVIAL },
@@ -213,6 +214,7 @@ static struct option builtin_merge_options[] = {
  { OPTION_STRING, 'S', "gpg-sign", &sign_commit, N_("key id"),
   N_("GPG sign commit"), PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
  OPT_BOOLEAN(0, "overwrite-ignore", &overwrite_ignore, N_("update
ignored files (default)")),
+ OPT_STRING(0, "conflict", &conflict_style, N_("style"), N_("conflict
style (merge or diff3)")),
  OPT_END()
 };

@@ -1102,6 +1104,9 @@ int cmd_merge(int argc, const char **argv, const
char *prefix)
  if (verbosity < 0 && show_progress == -1)
  show_progress = 0;

+ if (conflict_style)
+ git_xmerge_config("merge.conflictstyle", conflict_style, NULL);
+
  if (abort_current_merge) {
  int nargc = 2;
  const char *nargv[] = {"reset", "--merge", NULL};