<dca> guys
<dca> why doesn't (re-search-backward "#[0-9a-zA-Z]+(/[0-9a-zA-Z]+)?" nil
t) match something like #2638782/21 or #2639019
<dca> but this works M-x re-search-backward #[0-9a-zA-Z]+(/[0-9a-zA-Z]+)?