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

[Juri Linkov]

>> OK, so we get the byte offset, but not the length of the match (which
>> we'll also need later, for purposes such as highlighting and
>> replacement). And what happens if there are several matches on the same
>> line? We need columns for all of them.
>
> I don't know exactly what you want to do, I initially chimed in this
> conversation to react to Juri's "GNU grep has no option to truncate
> output", to mention that GNU grep does have an option to do this; perhaps
> it doesn't do exactly what you want.

By an option I meant a command line switch of GNU grep,
not something that looks like a hack.