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Re: What is a "superior mode"?
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From: |
Eli Zaretskii |
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Subject: |
Re: What is a "superior mode"? |
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Date: |
Wed, 10 Mar 2021 05:26:53 +0200 |
> From: Marcin Borkowski <mbork@mbork.pl>
> Date: Tue, 09 Mar 2021 22:20:03 +0100
> Cc: Help Gnu Emacs mailing list <help-gnu-emacs@gnu.org>
>
> >> -- Function: prog-first-column
> >> Call this function instead of using a literal value (usually, zero)
> >> of the column number for indenting top-level program constructs.
> >> The function’s value is the column number to use for top-level
> >> constructs. When no superior mode is in effect, this function
> >> returns zero.
> >> What is a "superior mode" (and a "sub-mode", for that matter)?
> >
> > It refers to a "multiple major modes" situation. Like Python embedded
> > in HTML, that sort of thing. Or C inside Latex.
>
> Yeah, I know now. But: are "multiple modes" supported by core Emacs?
Those facilities are some simple infrastructure in support of such
modes.