-/*----------------------------------.
-| Whether S is a valid identifier. |
-`----------------------------------*/
-
-static bool
-is_identifier (uniqstr s)
-{
- static char const alphanum[26 + 26 + 1 + 10] =
- "abcdefghijklmnopqrstuvwxyz"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
- "_"
- "0123456789";
- if (!s || ! memchr (alphanum, *s, sizeof alphanum - 10))
- return false;
- for (++s; *s; ++s)
- if (! memchr (alphanum, *s, sizeof alphanum))
- return false;
- return true;
-}
-