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

[Theodor Thornhill]

> 2. mar. 2021 kl. 22:37 skrev Dmitry Gutov <dgutov@yandex.ru>:
> 
> Hi Theodor,
> 
>> On 02.03.2021 23:13, Theodor Thornhill via Bug reports for GNU Emacs, the 
>> Swiss army knife of text editors wrote:
>> Yeah, maybe.  However, without benchmarking, it is quite clear that
>> adding your option is faster than my patch, since ripgrep has to search
>> the whole minified file.  I assume it short circuits, so that results
>> are delivered quicker to emacs.  Maybe this bug can be closed.
> 
> Could you try benchmarking both approaches?
> 

Absolutely, I will see what I can come up with.

> If the performance improvement from yours is at all comparable with Juri's, 
> I'm inclined to prefer that direction for reasons described in 
> https://debbugs.gnu.org/cgi/bugreport.cgi?bug=44983#71.
> 

Yeah, that was my initial motivation for this change as well. 

> In both cases Ripgrep (or Grep) will search the whole file. The -M flag just 
> affects its output.

Oh, ok!

Ill get back to you.

—
Theo