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

[Eli Zaretskii]

> From: "Basil L. Contovounesios" <contovob@tcd.ie>
> Cc: Alex Branham <alex.branham@gmail.com>,  <j@lollyshouse.ca>,  
> <35021@debbugs.gnu.org>,  <stephen_leake@stephe-leake.org>,  
> <stlman@poczta.fm>
> Date: Sun, 31 Mar 2019 03:41:47 +0100
> 
> > Looks OK to me, please push.
> 
> Thanks, but my last patch only fixed the bug with the interactive spec,
> and I have since discovered and fixed a few more edge-cases (including
> that reported by Alex in bug#35036).
> 
> I attach the updated patch.  Can I push this one instead?

Yes, this LGTM as well.

> > Alex, this will also solve your bug report, right?  If now, why not?
> 
> My last patch didn't address bug#35036.  Whereas bug#35021 is caused by
> a wrong interactive spec, bug#35036 is caused by a wrong loop condition.
> 
> The attached patch should fix both issues (and a couple more).

Thanks.