Sure, Perl uses that syntax but it was inherited from sed which got it from ed.
I know Perl. It is the Perl syntax for regular expressions. I never said it was the first or only to use that syntax. Sheesh.
http://blog.jgc.org/2011/02/hacking-toshiba-t4800ct-love-sto...
Sure, Perl uses that syntax but it was inherited from sed which got it from ed.