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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: How to get the current column regardless of the content of the
 current line?
Date: Fri, 16 Dec 2022 09:10:18 +0200
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To: Gregory Heytings <gregory@heytings.org>
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In-Reply-To: <da0c324f2be5566e3de6@heytings.org> (message from Gregory
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> Date: Thu, 15 Dec 2022 22:02:59 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: help-gnu-emacs@gnu.org
> 
> 
> >> (defun my/current-column ()
> >>   (- (point) (save-excursion (beginning-of-line) (point))))
> >               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> >               (line-beginning-position)
> >
> > -- Stefan
> >
> 
> Indeed.  Or even 'pos-bol':
> 
> (defun my/current-column ()
>    (- (point) (pos-bol)))

It's not entirely correct to call this a "column", though...