Re: History for query replace pairs

[Eli Zaretskii]

> From: Stefan Monnier <address@hidden>
> Cc: Eli Zaretskii <address@hidden>,  address@hidden
> Date: Sat, 08 Nov 2014 21:01:54 -0500
> 
> I know, but 
> 
> > Then the most reliable detection would be to use char-displayable-p.
> 
> char-displayable-p doesn't work reliably for text-terminals.

I think it's the other way around: it's not 100% reliable on GUI
frames, due to half-hearted way we test whether the available fonts
support the character.

> And of course we can't use the same separator globally, because
> char-displayable-p can return different results in different terminals
> (or even different frames).

Indeed, this test will need to be done each time the history element
is about to be displayed.