fix key bypassing input-method-function during exwm-input--update-focus

[QiangF]

fix #705

[medranocalvo]

@QiangF, I just noticed your patch, which the same approach I proposed (months later) in #737.

I'll rework my patch to build upon yours. Have you already assigned copyright to the FSF? I'd like to have your name and e-mail address, as they cannot be found in the patch.

[QiangF]

@medranocalvo Please go ahead with your patch. The change is so trivial, if you think it worth mentioning, I am very happy to assign copyright for anything I build upon gnu project.
My name and email:
Qiang Fang
[email protected]

[medranocalvo]

I adapted your patch (doc, naming, etc.) and gave you authorship.

I'm closing this in favour of #737.

Thank you very much.

P.S.: Please assign copyright of Emacs-related changes to the FSF, otherwise it might be difficult to integrate your future patches into EXWM. Simply fill one of the forms in http://git.savannah.gnu.org/cgit/gnulib.git/tree/doc/Copyright (I used request-assign.future) and send it to [email protected]. (Name of the program would be "Emacs and ELPA").