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Re: [Help-nano] Look ahead on sh.nanorc

From: Benno Schulenberg
Subject: Re: [Help-nano] Look ahead on sh.nanorc
Date: Fri, 14 Apr 2017 22:10:16 +0200

Hello José,

On Fri, Apr 14, 2017, at 00:43, Jose Antonio Velasco wrote:
> I'd like to know if there's a way I can use look ahead on a regex in
> sh.nanorc file. When I try to use
> color brightred "^[[:alpha:]_][[:alnum:]_]*(?==)"
> I get the following error
> Error in /usr/share/nano/sh.nanorc on line 19: Bad regex
> "^[[:alpha:]_][[:alnum:]_]*(?==)": Invalid preceding regular expression

I too have tried using lookahead in regexes in nano, but it seems
that the regex implementation of glibc does not provide lookahead
nor lookbehind.  :|


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