[cfe-dev] Suggest to remove utils/clang-completion-mode.el

[Philipp Stephani via cfe-dev]

Hi Clang developers,

I've seen that there is a Clang-based completion plugin for Emacs in
utils/clang-completion-mode.el. However, that library appears unmaintained
(last change was more than four years ago) and not widely used (I've found
only one old blog post -
https://kristianrumberg.wordpress.com/2010/04/22/smart-autocompletion-for-c-in-emacs/
-
about it on the web). Also it doesn't use any of the standard completion
frontends (company, auto-complete), but massively changes keyboard input
(e.g. rebinds almost all normal keys). The initial revision was described
as "Experimental, ultra-hacking" and I wouldn't say the code quality has
improved much since then (e.g. it uses very short variable names for global
variables, even though Elisp doesn't have namespaces). Furthermore, when I
tried to use clang-completion-mode.el, I wasn't able to get it working at
all, but it nevertheless disturbs editing massively (e.g. no longer
allowing the user to enter a space). On the other hand, there are now
multiple well-maintained Clang-based completion frameworks (
https://github.com/abingham/emacs-ycmd,
https://github.com/brianjcj/auto-complete-clang) available that don't
suffer from any of these problems. Overall I'd suggest to remove
clang-completion-mode.el.
Thoughts?

Thanks,
Philipp
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