diff --git a/colla.h b/colla.h
index 65cff07..fd313ce 100644
--- a/colla.h
+++ b/colla.h
@@ -487,6 +487,7 @@ usize strv_rfind_view(strview_t ctx, strview_t view, usize from_right);
 bool char_is_space(char c);
 bool char_is_alpha(char c);
 bool char_is_num(char c);
+bool char_is_hex(char c);
 char char_lower(char c);
 char char_upper(char c);
 
@@ -603,23 +604,23 @@ bool ibstr_get_i16(ibstream_t *ib, i16 *out);
 bool ibstr_get_i32(ibstream_t *ib, i32 *out);
 bool ibstr_get_i64(ibstream_t *ib, i64 *out);
 
-// SIMPLE REGEX /////////////////////////////////
+// REGEX ////////////////////////////////////////
 
-// only supports *, every star matches until the following character
-// is found, e.g.
-// ab*e
-// abcde
-// matches (cd)
+// typedef struct rg_result_t rg_result_t;
+// struct rg_result_t {
+//     strview_t text;
+//     i64 offset;
+// };
+//
+// typedef struct rg_match_t rg_match_t;
+// struct rg_match_t {
+//     rg_result_t matches[COLLA_RG_MAX_MATCHES];
+//     int count;
+//     bool found_match;
+// };
 
-typedef struct rg_match_t rg_match_t;
-struct rg_match_t {
-    strview_t text[COLLA_RG_MAX_MATCHES];
-    int count;
-    bool matches;
-};
-
-rg_match_t rg_match(strview_t rg, strview_t text);
-bool rg_match_easy(strview_t rg, strview_t text);
+bool rg_matches(strview_t rg, strview_t text);
+bool glob_matches(strview_t glob, strview_t text);
 
 /////////////////////////////////////////////////
 
@@ -824,6 +825,12 @@ oshandle_t os_stdin(void);
 // windows specific
 oshandle_t os_win_conout(void);
 oshandle_t os_win_conin(void);
+oshandle_t os_win_regopen(arena_t scratch, strview_t name);
+void os_win_regclose(oshandle_t key);
+str_t os_win_regread_str(arena_t *arena, oshandle_t key, strview_t value);
+i64 os_win_regread_int(arena_t scratch, oshandle_t key, strview_t value);
+str_t os_win_regkey_str(arena_t *arena, strview_t key, strview_t value);
+
 
 #define print(...)   fmt_print(__VA_ARGS__)
 #define println(...) os_log_print(__FILE__, __LINE__, LOG_BASIC, __VA_ARGS__)
@@ -921,6 +928,7 @@ typedef strv_list_t os_cmd_t;
 typedef struct os_cmd_options_t os_cmd_options_t;
 struct os_cmd_options_t {
     os_env_t *env;
+    bool quiet;
     // redirected if !NULL
     oshandle_t *error;
     oshandle_t *out;
@@ -1439,3 +1447,4 @@ str_t pretty_print_get_stringv(arena_t *arena, const char *fmt, va_list args);
 usize pretty_print_get_length(strview_t view);
 
 #endif
+