bug#35036: 27.0.50; delete-indentation removes all blank lines

[Eli Zaretskii]

merge 35036 35021
thanks

> From: Alex Branham <alex.branham@gmail.com>
> Date: Thu, 28 Mar 2019 16:19:18 -0500
> 
> After 8fa94a1ecc18a41ca2738f438b3fbc817c9fdc82, delete-indentation
> removes all blank lines so that a buffer:
> 
> one
> 
> 
> two|
> 
> 
> with | as point, M-x delete-indentation results in:
> 
> one two
> 
> whereas before it would result in:
> 
> one
> 
> two
> 
> This seems contrary to the documentation, which states, "Join this line
> to previous and fix up whitespace at join." and also the NEWS entry,
> "When there's no active region, the command works on the current and the
> previous or the next line, as before."

But you did have a region, albeit not active, right?  Because if mark
wasn't set, you'd have an error message.

So I believe this is a duplicate of sorts of bug#35021, and should be
fixed together with that bug.

> Also, is the patch in Bug#35021 going to get applied soonish? If so I'll
> hold off in order not to create conflicts...

Soonish, yes.  Stay tuned.