Interesting. I thought regular expressions originated with Perl, which would have made that a late introduction. Essentially too late for "." to mean what it does. But apparently most of the regular expressions came from sed that was developed as a part of the Unix system in its early years. Very interesting info... for those who don't know, if you want to do a find and replace in vim, you basically pipe through sed. Because of the prominence of Perl's regular expressions (php has 'preg' referring to 'Perl regular expression') I always assumed that sed came after Perl.
On Tue, Oct 29, 2013 at 11:55 PM, Rob Myers <[email protected]> wrote: > On 29/10/13 07:57 PM, Pall Thayer wrote: > > > > I'm curious, in what system is "." a wildcard? > > Regular expressions. > > The historical reason for .files being invisible is fun. :-) > > _______________________________________________ > NetBehaviour mailing list > [email protected] > http://www.netbehaviour.org/mailman/listinfo/netbehaviour > -- ***************************** Pall Thayer artist http://pallthayer.dyndns.org *****************************
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