bug#44983: Truncate long lines of grep output

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

> Part of redisplaying the buffer is making sure the text that might
> wind up on display is fontified.  Which part will actually be on
> display can only be known _after_ the text is fontified (because
> fontification can change faces, and thus affect what's visible in the
> window).

Yeah, that's true -- font-lock might end up making the text visible,
even, I guess?  But then we're being slightly inconsistent -- if the
entire region is invisible, then we don't let font-lock do anything, you
said.

But it probably doesn't really matter much.

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   bloggy blog: http://lars.ingebrigtsen.no