3 ms·

er, I meant \{\}.

• jwilk 9y ago
  \{n\}, \{n,\} and \{n,m\} are all in POSIX. \{,m\} is a (pretty obscure) GNU extensions.
  • Hello71 9y ago
    hm, I could've sworn it wasn't. http://www.regular-expressions.info/gnu.html http://www.regular-expressions.info/gnu.html says that \?, \+, and \| are GNU extensions though.