Re: `font-lock-add-keywords' works... sometimes

[Eli Zaretskii]

> From: Michael Heerdegen <michael_heerdegen@web.de>
> Date: Tue, 19 Mar 2019 23:22:14 +0100
> 
> > BTW what is the proper "notation" for an Emacs major mode? Personally,
> > I'm all ascii with lowercase and dashes, I even do that with my file
> > system, e.g. ~/tools/torque-wrench or ~/fighters/juan-manuel-marquez,
> > so I'd like to denote them (the major modes) for ex "message-mode" and
> > "text-mode". But in the help (.e.g., `C-h M' when I type this) it is
> > "Message mode", not message-mode, so I suppose I'm technically
> > incorrect.
> 
> I guess both are ok and no one cares.  Most people seem to prefer the
> lowercase version.  C-h M just tries to be cool.

The convention is to use lower case when referencing the mode as a
Lisp symbol, and capitalized words without hyphens when talking about
the mode in the documentation.