Re: [Boost-build] SHELL and trailing newlines

From: Rene Rivera (grafikrobot_at_[hidden])
Date: 2006-10-07 14:43:32

Johan Nilsson wrote:
> Is it really possible to split, e.g.:
> 
> o = "one
> two
> three" ;
> 
> so that $(xs) equals one two three , using the nl definition above in a 
> regex? This is what I've tried, but it seems to get stuck in an endless 
> loop:

Not with the regex engine built into bjam. It's a greedy implementation 
that tail matches. The regex.split gets around that by doing multiple 
MATCH calls to successively get the tail elements one at a time. A regex 
split is a much needed builtin, as it would use less memory than the 
regex.split rule. Anyone care to contribute ;-)

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