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 = 16 * 1024 * 1024;
-char *pager_program;
+const char *pager_program;
int pager_use_color = 1;
char *editor_program;
char *excludes_file;