init: expand comments explaining config trickery

diff --git a/environment.c b/environment.c
index 96160a75a53340fcc9b2e1a81d2198d073bd4562..20a870c3d72101824e452ca68017e5150bd9de87 100644 (file)
--- a/environment.c
+++ b/environment.c
@@ -39,7 +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;
@@ -195,6 +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)