Perhaps, yes, might even be locale-specific or a combo of keyboard input method and locale. I only tested this for Norwegian UTF-8 locale. But the important thing here is what your LANG variable eventually ends up containing. What does your LANG variable contain (not value in ~/.dmrc) when Emacs works ?
Originally Posted by firstname.lastname@example.org
Invoke Emacs with different alternatives for LANG and see which of them makes or breaks dead keys:
Would be interesting to know. Emacs might be buggy in interpreting locale in general. Or there might be issues with installed locales.
$ LANG=nl_NL.utf8 emacs
$ LANG=nl_NL.UTF-8 emacs
$ LANG=en_US.utf8 emacs
$ LANG=en_US.UTF-8 emacs