sparse-checkout: init and set in cone mode

To make the cone pattern set easy to use, update the behavior of
'git sparse-checkout (init|set)'.

Add '--cone' flag to 'git sparse-checkout init' to set the config
option 'core.sparseCheckoutCone=true'.

When running 'git sparse-checkout set' in cone mode, a user only
needs to supply a list of recursive folder matches. Git will
automatically add the necessary parent matches for the leading
directories.

When testing 'git sparse-checkout set' in cone mode, check the
error stream to ensure we do not see any errors. Specifically,
we want to avoid the warning that the patterns do not match
the cone-mode patterns.

Helped-by: Eric Wong <e@80x24.org>
Helped-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/dir.c b/dir.c
index dfabf99..35c1ca9 100644
--- a/dir.c
+++ b/dir.c
@@ -611,10 +611,10 @@ void parse_path_pattern(const char **pattern,
 	*patternlen = len;
 }
 
-static int pl_hashmap_cmp(const void *unused_cmp_data,
-			  const struct hashmap_entry *a,
-			  const struct hashmap_entry *b,
-			  const void *key)
+int pl_hashmap_cmp(const void *unused_cmp_data,
+		   const struct hashmap_entry *a,
+		   const struct hashmap_entry *b,
+		   const void *key)
 {
 	const struct pattern_entry *ee1 =
 			container_of(a, struct pattern_entry, ent);