bug#28855: 26.0.90; display-line-numbers-mode does not respect (line|wrap)-prefix '(space :align-to N) text property

[Paul Rankin <hello@paulwrankin.com>]

On Tue, 17 Oct 2017, at 03:49 PM, Eli Zaretskii wrote:
> > Further to the cited discussion, if taken to its logical conclusions,
> > this approach reaches a point of absurdity, e.g.
> > 
> > Three lines with respective :align-to property values of 0, 2 and 4
> > should appear like this:
> > 
> >     foo
> >       bar
> >         baz
> > 
> > However what we get when these lines occur at line 1000 with
> > display-line-numbers-mode enabled is:
> > 
> >     1000 foo
> >     1001 bar
> >     1002 baz
> > 
> > Or, given that the line numbers take up a width of 4 characters, and
> > we don’t account for this width, then logically do we now truncate the
> > leading 4 and 2 characters....?
> > 
> >     1000 
> >     1001 r
> >     1002 baz
> 
> Not sure what is alluded to as "this approach".

Current implementation.

> My last point is that instead of 0, 2, and 4, you can use those values plus what
> line-number-display-width returns, and then you will have your expected
> result.

It’s not the responsibility of others to work around problems you create. I’ve done my part by identifying the bug. That’s as far as I wish to be involved.