init: expand comments explaining config trickery

diff --git a/environment.c b/environment.c
index 6cc0a7780f790d6cea3774acd989a57e52934f91..20a870c3d72101824e452ca68017e5150bd9de87 100644 (file)
--- a/environment.c
+++ b/environment.c
@@ -25,11 +25,9 @@ int log_all_ref_updates = -1; /* unspecified */
 int warn_ambiguous_refs = 1;
 int warn_on_object_refname_ambiguity = 1;
 int ref_paranoia = -1;
-int repository_format_version;
 int repository_format_precious_objects;
 const char *git_commit_encoding;
 const char *git_log_output_encoding;
-int shared_repository = PERM_UMASK;
 const char *apply_default_whitespace;
 const char *apply_default_ignorewhitespace;
 const char *git_attributes_file;
@@ -41,7 +39,6 @@ size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
 size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
 size_t delta_base_cache_limit = 96 * 1024 * 1024;
 unsigned long big_file_threshold = 512 * 1024 * 1024;
-const char *pager_program;
 int pager_use_color = 1;
 const char *editor_program;
 const char *askpass_program;
@@ -65,6 +62,7 @@ int core_apply_sparse_checkout;
 int merge_log_config = -1;
 int precomposed_unicode = -1; /* see probe_utf8_pathname_composition() */
 unsigned long pack_size_limit_cfg;
+enum hide_dotfiles_type hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
 
 #ifndef PROTECT_HFS_DEFAULT
 #define PROTECT_HFS_DEFAULT 0
@@ -196,6 +194,13 @@ int is_bare_repository(void)
        return is_bare_repository_cfg && !get_git_work_tree();
 }
 
+int have_git_dir(void)
+{
+       return startup_info->have_repository
+               || git_dir
+               || getenv(GIT_DIR_ENVIRONMENT);
+}
+
 const char *get_git_dir(void)
 {
        if (!git_dir)
@@ -324,3 +329,24 @@ const char *get_commit_output_encoding(void)
 {
        return git_commit_encoding ? git_commit_encoding : "UTF-8";
 }
+
+static int the_shared_repository = PERM_UMASK;
+static int need_shared_repository_from_config = 1;
+
+void set_shared_repository(int value)
+{
+       the_shared_repository = value;
+       need_shared_repository_from_config = 0;
+}
+
+int get_shared_repository(void)
+{
+       if (need_shared_repository_from_config) {
+               const char *var = "core.sharedrepository";
+               const char *value;
+               if (!git_config_get_value(var, &value))
+                       the_shared_repository = git_config_perm(var, value);
+               need_shared_repository_from_config = 0;
+       }
+       return the_shared_repository;
+}