commit: support commit.status, --status, and --no-status

A new configuration variable commit.status, and new command line
options --status, and --no-status control whether or not the git
status information is included in the commit message template
when using an editor to prepare the commit message.  It does not
affect the effects of a user's commit.template settings.
Signed-off-by: NJames P. Howard, II <jh@jameshoward.us>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Documentation/config.txt

@@ -705,6 +705,11 @@ color.ui::
 	terminal. When more specific variables of color.* are set, they always
 	take precedence over this setting. Defaults to false.
 
+commit.status
+	A boolean to enable/disable inclusion of status information in the
+	commit message template when using an editor to prepare the commit
+	message.  Defaults to true.
+
 commit.template::
 	Specify a file to use as the template for new commit messages.
 	"{tilde}/" is expanded to the value of `$HOME` and "{tilde}user/" to the

Documentation/git-commit.txt

@@ -11,7 +11,8 @@ SYNOPSIS
 'git commit' [-a | --interactive] [-s] [-v] [-u<mode>] [--amend] [--dry-run]
 	   [(-c | -C) <commit>] [-F <file> | -m <msg>] [--reset-author]
 	   [--allow-empty] [--no-verify] [-e] [--author=<author>]
-	   [--cleanup=<mode>] [--] [[-i | -o ]<file>...]
+	   [--cleanup=<mode>] [--status | --no-status] [--]
+	   [[-i | -o ]<file>...]
 
 DESCRIPTION
 -----------
@@ -207,6 +208,17 @@ specified.
 	to be committed, paths with local changes that will be left
 	uncommitted and paths that are untracked.
 
+--status::
+	Include the output of linkgit:git-status[1] in the commit
+	message template when using an editor to prepare the commit
+	message.  Defaults to on, but can be used to override
+	configuration variable commit.status.
+
+--no-status::
+	Do not include the output of linkgit:git-status[1] in the
+	commit message template when using an editor to prepare the
+	default commit message.
+
 \--::
 	Do not interpret any more arguments as options.
 

builtin-commit.c

@@ -67,7 +67,7 @@ static enum {
 } cleanup_mode;
 static char *cleanup_arg;
 
-static int use_editor = 1, initial_commit, in_merge;
+static int use_editor = 1, initial_commit, in_merge, include_status = 1;
 static const char *only_include_assumed;
 static struct strbuf message;
 
@@ -97,6 +97,7 @@ static struct option builtin_commit_options[] = {
 	OPT_BOOLEAN('s', "signoff", &signoff, "add Signed-off-by:"),
 	OPT_FILENAME('t', "template", &template_file, "use specified template file"),
 	OPT_BOOLEAN('e', "edit", &edit_flag, "force edit of commit"),
+	OPT_BOOLEAN(0, "status", &include_status, "include status in commit message template"),
 
 	OPT_GROUP("Commit contents options"),
 	OPT_BOOLEAN('a', "all", &all, "commit all changed files"),
@@ -547,7 +548,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
 
 	/* This checks if committer ident is explicitly given */
 	git_committer_info(0);
-	if (use_editor) {
+	if (use_editor && include_status) {
 		char *author_ident;
 		const char *committer_ident;
 
@@ -1006,6 +1007,10 @@ static int git_commit_config(const char *k, const char *v, void *cb)
 
 	if (!strcmp(k, "commit.template"))
 		return git_config_pathname(&template_file, k, v);
+	if (!strcmp(k, "commit.status")) {
+		include_status = git_config_bool(k, v);
+		return 0;
+	}
 
 	return git_status_config(k, v, s);
 }