3 ms·

Lifted directly from sed, one of Perl's inspirations: s/replace #/with $/ s#replace /#with _#

• mycl 6y ago
  I think it was in ed already. The POSIX ed spec says: "Any character other than <space> or <newline> can be used instead of a slash to delimit the RE and the replacement."
  • codesnik 6y ago
    and, AFAIR, in perl space and enter could be delimiters too! I think I've used it in some perlgolf task which didn't count whitespace.
    • codesnik 6y ago
      and memory tricked me. Whitespace doesn't work for regex and quoting terminators.
      • kbp 6y ago
        Works in Ruby: irb(main):001:1/ puts(%r irb(main):002:1* a+ irb(main):003:0> .match? %q aaa ) true