[PATCH 3/3] make commit --verbose work with --no-status

[Tay Ray Chuan <rctay89@gmail.com>]

One would expect 'git commit --verbose --no-status' to give a commit
message with a diff of the commit, sans the output of git-status.
However, this does not work currently; the commit message body is
entirely empty (diff is absent as well). This is because internally the
status machinery is used to provide both the diff and status output, but
it is skipped due to --no-status.

We introduce a new status_format, STATUS_FORMAT_NONE. Thus, we still
call run_status(), but produce nothing in place of the usual git-status
output. status_format is set only when git-commit is passed i)
--verbose, and ii) --no-status.

Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
---
 builtin/commit.c | 14 +++++++++++++-
 wt-status.c      |  2 +-
 wt-status.h      |  3 +++
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/builtin/commit.c b/builtin/commit.c
index 2e86b76..fca6a6b 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -126,6 +126,7 @@ static struct strbuf message = STRBUF_INIT;
 
 static enum status_format {
 	STATUS_FORMAT_DEFAULT = 0,
+	STATUS_FORMAT_NONE,
 	STATUS_FORMAT_LONG,
 	STATUS_FORMAT_SHORT,
 	STATUS_FORMAT_PORCELAIN,
@@ -478,6 +479,10 @@ static int run_status(FILE *fp, const char *index_file, const char *prefix, int
 	wt_status_collect(s);
 
 	switch (status_format) {
+	case STATUS_FORMAT_NONE:
+		wt_status_mark_commitable(s);
+		wt_status_print_verbose(s);
+		break;
 	case STATUS_FORMAT_SHORT:
 		wt_shortstatus_print(s);
 		break;
@@ -1141,7 +1146,12 @@ static int parse_and_validate_options(int argc, const char *argv[],
 	if (all && argc > 0)
 		die(_("Paths with -a does not make sense."));
 
-	if (status_format != STATUS_FORMAT_DEFAULT)
+	if (verbose && !include_status) {
+		include_status = 1;
+		status_format = STATUS_FORMAT_NONE;
+	}
+
+	if (status_format != STATUS_FORMAT_DEFAULT && !verbose)
 		dry_run = 1;
 
 	return argc;
@@ -1305,6 +1315,8 @@ int cmd_status(int argc, const char **argv, const char *prefix)
 		s.prefix = prefix;
 
 	switch (status_format) {
+	case STATUS_FORMAT_NONE:
+		break;
 	case STATUS_FORMAT_SHORT:
 		wt_shortstatus_print(&s);
 		break;
diff --git a/wt-status.c b/wt-status.c
index 9b0189c..e90fd0f 100644
--- a/wt-status.c
+++ b/wt-status.c
@@ -822,7 +822,7 @@ void wt_status_truncate_message_at_cut_line(struct strbuf *buf)
 	strbuf_release(&pattern);
 }
 
-static void wt_status_print_verbose(struct wt_status *s)
+void wt_status_print_verbose(struct wt_status *s)
 {
 	struct rev_info rev;
 	struct setup_revision_opt opt;
diff --git a/wt-status.h b/wt-status.h
index 30a4812..5c89f23 100644
--- a/wt-status.h
+++ b/wt-status.h
@@ -95,8 +95,11 @@ void wt_status_truncate_message_at_cut_line(struct strbuf *);
 void wt_status_prepare(struct wt_status *s);
 void wt_status_print(struct wt_status *s);
 void wt_status_collect(struct wt_status *s);
+void wt_status_mark_commitable(struct wt_status *state);
 void wt_status_get_state(struct wt_status_state *state, int get_detached_from);
 
+void wt_status_print_verbose(struct wt_status *s);
+
 void wt_shortstatus_print(struct wt_status *s);
 void wt_porcelain_print(struct wt_status *s);
 
-- 
1.9.0.291.g027825b