bug#35021: M-^ (delete-indentation) doesn't work without a mark present

[Basil L. Contovounesios]

0001-Fix-delete-indentation-when-region-is-inactive.patch
Description: Text Data

Jon Irving <j@lollyshouse.ca> writes:

> I believe this is related to the following commits:
>
> b515edb985 Fix bug in delete-indentation when region is inactive
> 09c220a5cf Minor fixes for the last change
> 8fa94a1ecc If the region is active, join all the lines it spans
>
> From a clean `emacs -Q` start:
>
> 1. Move point up to the bottom line of the *scratch* buffer comments
> 2. Type M-^ (or M-x delete-indentation)
> 3. Observe the following message in the minibuffer:
>      The mark is not set now, so there is no region

This is because delete-indentation is currently using the 'r'
interactive code, which barfs if the region is inactive.

I attach a patch which fixes this and also updates the entry for
delete-indentation in the Elisp manual.  Is it acceptable?

Stephen, what is the difference between the two tests
simple-delete-indentation-no-region and
simple-delete-indentation-inactive-region?  Can they be merged?

Thanks,

-- 
Basil