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Re: [Emacs-diffs] master c66aaa6: Recomplexify ‘delete-trailing-whitesp


From: Stefan Monnier
Subject: Re: [Emacs-diffs] master c66aaa6: Recomplexify ‘delete-trailing-whitespace’ by treating \n as whitespace again
Date: Wed, 15 Mar 2017 07:28:26 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux)

>     Recomplexify ‘delete-trailing-whitespace’ by treating \n as
>     whitespace again
>
>     Mostly reverts "Simplify ‘delete-trailing-whitespace’ by not treating
>     \n as whitespace" from 2016-07-04.  Setting \n to non-whitespace
>     causes the regex engine to backtrack a lot when searching for
>     "\\s-+$" (Bug#26079).

Why do we use syntax-tables?
IOW why do we use \s- rather than something like [\s\t]?


        Stefan



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