Re: Determining existence of text following point

[Christopher Dimech <dimech@gmx.com>]

> Sent: Tuesday, May 18, 2021 at 11:56 PM
> From: "Jean Louis" <bugs@gnu.support>
> To: "Christopher Dimech" <dimech@gmx.com>
> Cc: tomas@tuxteam.de, help-gnu-emacs@gnu.org
> Subject: Re: Determining existence of text following point
>
> * Christopher Dimech <dimech@gmx.com> [2021-05-18 14:27]:
> > > > (setq sa (string-match "[^[:blank:]]" "     "))
> 
> > I find the description different from what string-match actually
> > returns.
> 
> The symbol ^ means "not following", and that regular expression means
> match non-blanks.
> 
> (string-match "[^[:blank:]]" "     ") ⇒ nil
> (string-match "[[:blank:]]" "     ") ⇒ 0

You are correct.  "^" means match everything but the following class.

I am quite used on see "^" to mean "beginning of line".  So just read
it as I usually do.

It is unfortunate that there exist so many different syntaxes for writing
regular expressions.

> -- 
> Jean
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