[PATCH 01/16] Add core.subtree

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

This variable contains the subtree. With core_subtree being non-empty
behavior of git may be totally different.

Perhaps this should not stay in .git/config, rather .git/subtree

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 cache.h       |    1 +
 config.c      |    3 +++
 environment.c |    2 ++
 3 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/cache.h b/cache.h
index c9fa3df..04ebe6e 100644
--- a/cache.h
+++ b/cache.h
@@ -551,6 +551,7 @@ extern int read_replace_refs;
 extern int fsync_object_files;
 extern int core_preload_index;
 extern int core_apply_sparse_checkout;
+extern const char *core_subtree;
 
 enum safe_crlf {
 	SAFE_CRLF_FALSE = 0,
diff --git a/config.c b/config.c
index cdcf583..86ded29 100644
--- a/config.c
+++ b/config.c
@@ -595,6 +595,9 @@ static int git_default_core_config(const char *var, const char *value)
 		return 0;
 	}
 
+	if (!strcmp(var, "core.subtree"))
+		return git_config_string(&core_subtree, var, value);
+
 	/* Add other config variables here and to Documentation/config.txt. */
 	return 0;
 }
diff --git a/environment.c b/environment.c
index 83d38d3..1365dd0 100644
--- a/environment.c
+++ b/environment.c
@@ -57,6 +57,8 @@ int core_apply_sparse_checkout;
 /* Parallel index stat data preload? */
 int core_preload_index = 0;
 
+const char *core_subtree;
+
 /* This is set by setup_git_dir_gently() and/or git_default_config() */
 char *git_work_tree_cfg;
 static char *work_tree;
-- 
1.7.1.rc1.69.g24c2f7