[RESEND PATCH] parse-opt: make PARSE_OPT_STOP_AT_NON_OPTION available to git rev-parse

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Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
---
Hello,

there is no caller for --stop-at-non-option in git-core itself.  This is
mainly targeted for topgit and its successor I currently code up.

Since the last post I only updated it because the old patch resulted in
two merge conflicts (git-rev-parse learned "--sq-quote" and parse_options
got a new argument "prefix")

 Documentation/git-rev-parse.txt |    5 +++++
 builtin-rev-parse.c             |    8 ++++++--
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/Documentation/git-rev-parse.txt b/Documentation/git-rev-parse.txt
index 4bbdd05..82045a2 100644
--- a/Documentation/git-rev-parse.txt
+++ b/Documentation/git-rev-parse.txt
@@ -30,6 +30,11 @@ OPTIONS
 	Only meaningful in `--parseopt` mode. Tells the option parser to echo
 	out the first `--` met instead of skipping it.
 
+--stop-at-non-option::
+	Only meaningful in `--parseopt` mode.  Lets the option parser stop at
+	the first non-option argument.  This can be used to parse sub-commands
+	that take options themself.
+
 --sq-quote::
 	Use 'git-rev-parse' in shell quoting mode (see SQ-QUOTE
 	section below). In contrast to the `--sq` option below, this
diff --git a/builtin-rev-parse.c b/builtin-rev-parse.c
index 112d622..5ea7518 100644
--- a/builtin-rev-parse.c
+++ b/builtin-rev-parse.c
@@ -301,7 +301,7 @@ static const char *skipspaces(const char *s)
 
 static int cmd_parseopt(int argc, const char **argv, const char *prefix)
 {
-	static int keep_dashdash = 0;
+	static int keep_dashdash = 0, stop_at_non_option = 0;
 	static char const * const parseopt_usage[] = {
 		"git rev-parse --parseopt [options] -- [<args>...]",
 		NULL
@@ -309,6 +309,9 @@ static int cmd_parseopt(int argc, const char **argv, const char *prefix)
 	static struct option parseopt_opts[] = {
 		OPT_BOOLEAN(0, "keep-dashdash", &keep_dashdash,
 					"keep the `--` passed as an arg"),
+		OPT_BOOLEAN(0, "stop-at-non-option", &stop_at_non_option,
+					"stop parsing after the "
+					"first non-option argument"),
 		OPT_END(),
 	};
 
@@ -394,7 +397,8 @@ static int cmd_parseopt(int argc, const char **argv, const char *prefix)
 	ALLOC_GROW(opts, onb + 1, osz);
 	memset(opts + onb, 0, sizeof(opts[onb]));
 	argc = parse_options(argc, argv, prefix, opts, usage,
-	                     keep_dashdash ? PARSE_OPT_KEEP_DASHDASH : 0);
+			keep_dashdash ? PARSE_OPT_KEEP_DASHDASH : 0 |
+			stop_at_non_option ? PARSE_OPT_STOP_AT_NON_OPTION : 0);
 
 	strbuf_addf(&parsed, " --");
 	sq_quote_argv(&parsed, argv, 0);
-- 
1.6.3.1

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