From: David Alan Black <dblack@...>
Date: 2004-05-13T20:23:55+09:00
Subject: Re: nasty regexp problem

Hi --

Simon Strandgaard <neoneye@adslhome.dk> writes:

> Francis Hwang wrote:
> > I discovered a strange bug in Lafcadio which I'm trying to work out,
> > but the regexp is getting really nasty. Basically, to commit text
> > values to the database I need to double any apostrophe, except those
> > that are preceded by a backslash. This has to account for apostrophes
> > at the beginning of the string, and multiline strings where the
> > apostrophe is at the start of a new line. Examples would be:
>  
> 
> irb(main):001:0> "''\\\\'z\\'\\z''".gsub(/ ( (?: [^\\] | \\ . )*? ) ' /x, '\1\'\'')
> => "''''\\\\''z\\'\\z''''"

The ' before the first z isn't supposed to get doubled though, is it?


David

-- 
David A. Black
dblack@wobblini.net