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

[Dmitry Gutov]

On 03.03.2021 11:52, Gregory Heytings wrote:
> Actually, it is possible to truncate output with GNU grep:
>
> grep -oE '.{0,100}PATTERN.{0,100}'
>
> prints at most 100 characters before and after PATTERN.  I find this 
> much better than ripgrep -M.

I'm not sure how to parse that output (it would be quite different from 
what we get now), and if the one-long-line file has many matches inside, 
we'll still get them all, which we might or might not want.