bug#18977: 25.0.50; Enhance (fix) incremental `indent-rigidly'

[Lars Ingebrigtsen]

Drew Adams <drew.adams@oracle.com> writes:

> 1. Please consider adding this binding, so you can simply do `C-x TAB
> TAB...': (define-key indent-rigidly-map "\t" 'indent-rigidly-right).
> And update the doc string and prompt, of course.

Makes sense; I've now added this to Emacs 29.  (But not changed the
prompt.)

> 2. You cannot currently provide a numeric prefix arg to `indent-rigidly'
> for incremental use.  The incremental indentation you get is either 1 
> column (for <right>) or to the next tab stop (for <S-right>).
>
> It would be good to be able to use a numeric prefix arg interactively to
> indent not only once, but each time you hit <right>.

I don't think that makes much sense -- if you've decided to indent X
columns (by using the prefix), then you don't want to enter the
transient map thing.

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