[PATCH v3 04/11] update-index: add untracked cache notifications

From: Christian Couder <christian.couder@gmail.com>
Date: Dec 23, 2015, 21:03 UTC
Message-ID: <1450904639-25592-5-git-send-email-chriscool@tuxfamily.org>
In-Reply-To: <1450904639-25592-1-git-send-email-chriscool@tuxfamily.org>

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 | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/builtin/update-index.c b/builtin/update-index.c
index 62222dd..c91e695 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);
@@ -1135,10 +1135,16 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
 		}
 		add_untracked_ident(the_index.untracked);
 		the_index.cache_changed |= UNTRACKED_CHANGED;
-	} else if (untracked_cache == UC_DISABLE && the_index.untracked) {
-		free_untracked_cache(the_index.untracked);
-		the_index.untracked = NULL;
-		the_index.cache_changed |= UNTRACKED_CHANGED;
+		if (verbose)
+			printf(_("Untracked cache enabled for '%s'\n"), get_git_work_tree());
+	} else if (untracked_cache == UC_DISABLE) {
+		if (the_index.untracked) {
+			free_untracked_cache(the_index.untracked);
+			the_index.untracked = NULL;
+			the_index.cache_changed |= UNTRACKED_CHANGED;
+		}
+		if (verbose)
+			printf(_("Untracked cache disabled\n"));
 	}
 
 	if (active_cache_changed) {

-- 
2.7.0.rc2.11.g68ccdd4