[PATCH xlib] Add support for a display-specific error handler

[Keith Packard]

"Jasper St. Pierre" <jstpierre at mecheye.net> writes:

> Writing error-safe code that uses Xlib is too obnoxious, and using XCB
> is tedious and not performant, as we can't catch events on a giant
> stream -- we have to check every operation manually.

You get errors returned in the event stream; is there something fancier
you'd like from xcb to make it faster?

-- 
-keith
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