* macro.c (ISSEP): Remove duplicated `"' character.
(get_any_string): Copy some characters for which ISSEP is true:
';', '>', '(', ')'. Otherwise we can get in an infinite loop.
* read.c (s_space): In MRI mode, the expressions stop at the first
unquoted space.
(cons_worker): In MRI mode, restore the terminating character at
the end of the function.