[PATCH 3/9] count_pathspec(): return number of elements in pathspec

[Junio C Hamano <gitster@pobox.com>]

When fed a non-empty argv[], get_pathspec(prefix, argv) used to always
return an array of string that has the same number of elements as argv[]
had, but with ":" (work at toplevel without any path limit) magic pathspec
it can return zero elements.  Passing the result from get_pathspec() to
this function will always give the correct number of pathspec elements.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 cache.h |    3 ++-
 setup.c |   10 ++++++++++
 2 files changed, 12 insertions(+), 1 deletions(-)

diff --git a/cache.h b/cache.h
index be6ce72..6170dce 100644
--- a/cache.h
+++ b/cache.h
@@ -425,7 +425,8 @@ extern void set_git_work_tree(const char *tree);
 
 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
 
-extern const char **get_pathspec(const char *prefix, const char **pathspec);
+extern const char **get_pathspec(const char *prefix, const char **argv);
+extern int count_pathspec(const char **pathspec);
 extern void setup_work_tree(void);
 extern const char *setup_git_directory_gently(int *);
 extern const char *setup_git_directory(void);
diff --git a/setup.c b/setup.c
index c1be388..cab9ddd 100644
--- a/setup.c
+++ b/setup.c
@@ -287,6 +287,16 @@ const char **get_pathspec(const char *prefix, const char **pathspec)
 	return pathspec;
 }
 
+int count_pathspec(const char **pathspec)
+{
+	int i;
+	if (!pathspec)
+		return 0;
+	for (i = 0; pathspec[i]; i++)
+		; /* just counting */
+	return i;
+}
+
 /*
  * Test if it looks like we're at a git directory.
  * We want to see:
-- 
1.7.5.1.290.g1b565