[PATCH v2 03/10] update-index: add untracked cache notifications

[Christian Couder <christian.couder@gmail.com>]

Attempting to flip the untracked-cache feature on for a random index
file with

    cd /random/unrelated/place
    git --git-dir=/somewhere/else/.git update-index --untracked-cache

would not work as you might expect. Because flipping the feature on
in the index also records the location of the corresponding working
tree (/random/unrelated/place in the above example), when the index
is subsequently used to keep track of files in the working tree in
/somewhere/else, the feature is disabled.

With this patch "git update-index --[test-]untracked-cache" tells the
user in which directory tests are performed. This makes it easy to
spot any problem.

Also in verbose mode, let's tell the user when the cache is enabled
or disabled.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 builtin/update-index.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/builtin/update-index.c b/builtin/update-index.c
index e747a6c..e84674f 100644
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -130,7 +130,7 @@ static int test_if_untracked_cache_is_supported(void)
 	if (!mkdtemp(mtime_dir.buf))
 		die_errno("Could not make temporary directory");
 
-	fprintf(stderr, _("Testing "));
+	fprintf(stderr, _("Testing mtime in '%s' "), xgetcwd());
 	atexit(remove_test_directory);
 	xstat_mtime_dir(&st);
 	fill_stat_data(&base, &st);
@@ -1135,9 +1135,13 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
 		}
 		add_untracked_ident(the_index.untracked);
 		the_index.cache_changed |= UNTRACKED_CHANGED;
+		if (verbose)
+			printf(_("Untracked cache enabled\n"));
 	} else if (untracked_cache == UC_DISABLE && the_index.untracked) {
 		the_index.untracked = NULL;
 		the_index.cache_changed |= UNTRACKED_CHANGED;
+		if (verbose)
+			printf(_("Untracked cache disabled\n"));
 	}
 
 	if (active_cache_changed) {
-- 
2.6.3.479.g8eb29d4