merge(3p/git): Merge git subtree at v2.29.2 r/1890

This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb

1 files changed, 11 insertions, 6 deletions

diff --git a/third_party/git/submodule.h b/third_party/git/submodule.h
index 8072e6d6ddfd..4ac6e31cf1f7 100644
--- a/third_party/git/submodule.h
+++ b/third_party/git/submodule.h
@@ -1,7 +1,7 @@
 #ifndef SUBMODULE_H
 #define SUBMODULE_H
 
-struct argv_array;
+struct strvec;
 struct cache_entry;
 struct diff_options;
 struct index_state;
@@ -69,7 +69,7 @@ int parse_submodule_update_strategy(const char *value,
 				    struct submodule_update_strategy *dst);
 const char *submodule_strategy_to_string(const struct submodule_update_strategy *s);
 void handle_ignore_submodules_arg(struct diff_options *, const char *);
-void show_submodule_summary(struct diff_options *o, const char *path,
+void show_submodule_diff_summary(struct diff_options *o, const char *path,
 			    struct object_id *one, struct object_id *two,
 			    unsigned dirty_submodule);
 void show_submodule_inline_diff(struct diff_options *o, const char *path,
@@ -84,7 +84,7 @@ int should_update_submodules(void);
 const struct submodule *submodule_from_ce(const struct cache_entry *ce);
 void check_for_new_submodule_commits(struct object_id *oid);
 int fetch_populated_submodules(struct repository *r,
-			       const struct argv_array *options,
+			       const struct strvec *options,
 			       const char *prefix,
 			       int command_line_option,
 			       int default_option,
@@ -124,6 +124,11 @@ int push_unpushed_submodules(struct repository *r,
  */
 int submodule_to_gitdir(struct strbuf *buf, const char *submodule);
 
+/*
+ * Make sure that no submodule's git dir is nested in a sibling submodule's.
+ */
+int validate_submodule_git_dir(char *git_dir, const char *submodule_name);
+
 #define SUBMODULE_MOVE_HEAD_DRY_RUN (1<<0)
 #define SUBMODULE_MOVE_HEAD_FORCE   (1<<1)
 int submodule_move_head(const char *path,
@@ -138,7 +143,7 @@ void submodule_unset_core_worktree(const struct submodule *sub);
  * a submodule by clearing any repo-specific environment variables, but
  * retaining any config in the environment.
  */
-void prepare_submodule_repo_env(struct argv_array *out);
+void prepare_submodule_repo_env(struct strvec *out);
 
 #define ABSORB_GITDIR_RECURSE_SUBMODULES (1<<0)
 void absorb_git_dir_into_superproject(const char *path,
@@ -147,8 +152,8 @@ void absorb_git_dir_into_superproject(const char *path,
 /*
  * Return the absolute path of the working tree of the superproject, which this
  * project is a submodule of. If this repository is not a submodule of
- * another repository, return NULL.
+ * another repository, return 0.
  */
-const char *get_superproject_working_tree(void);
+int get_superproject_working_tree(struct strbuf *buf);
 
 #endif