Subject: bug#46859: 28.0.50; [PATCH]: Add option to truncate long lines in xref.el

From: Dmitry Gutov <[email-masked]>
Date: Wed, 3 Mar 2021 19:26:03 +0200

On 03.03.2021 19:11, Gregory Heytings wrote:
> I wrote too fast.  In fact you can get the column number with GNU grep 
> without parsing the original line:
> 
> grep -nb -oE '.{0,100}PATTERN.{0,100}'

This outputs byte offset from the beginning of the file, doesn't it?

Which will require at least reading the file into memory to convert.