From the ARB_create_context_profile standard:
On failure glXCreateContextAttribsARB returns NULL and generates an
X error with extended error information.
Some NVIDIA drivers on Linux won't return a core profile. When they don't,
they're supposed to return NULL as well as generate an X error, but they
only generate an X error and return a non-NULL, garbage context. This is
not only nonstandard behavior, but lame. It's a major pain to check for X
errors. But whatever, NVIDIA, you big old gorilla.
This may or may not fix segfaults some people are having with Pict3D. If
it does, they won't have to use (current-pict3d-legacy? #t) anymore.
Get data from a clipboard client before going into atomic mode. This
correction can avoid an "about to suspend in atomic mode" failure,
particularly if a snip fails to copy correctly.
In particular, restore key handling that makes Ctl-Space produce an
event with a Space character. Also, restore `special-option-key`
support, while correcting the documentation to say what
`special-option-key` and `special-control-key` actually do.
Closes PR 14934
Bindings for UCKeyTranslate.
UCKeyTranslate converts a combination of a key-code, a modifier key state, keyboard layout and dead key state to a unicode string.
