For example: window -> MAINWINDOW.
This was broken by the constraint that the first char must follow a non-
matching case in 2fb54abd03. It was fixed for pure lowercase in f792475739,
but this fix was evidentially partial.
Change-Id: I0c29b54768c40d0501f006182f2bd1ae1e94f3bf
Reviewed-by: André Hartmann <aha_1980@gmx.de>