Subject: Re: bug#19194: 24.4.50; `window-body-width' is not dynamic relative to font size changes

From: Eli Zaretskii <[email-masked]>
Date: Wed, 26 Nov 2014 19:06:57 +0200

> From: Joe Corneli <[email-masked]>
> Date: Wed, 26 Nov 2014 16:34:21 +0000
> Cc: [email-masked]
> 
> If people switch fonts mid-line, that's clearly a pain - but "ems" could
> be defined relative to point-size-at-point, and would accordingly return
> an accurate *length*.

But functions like posn-at-point and other similar functions we have
already report the column number of a given position, so you could use
that as your "column counter".