bug#71835: 30.0.60; Using mode-line-format-right-align in header line results in cutoff text

[Eli Zaretskii]

> From: noa <noa@noa.pub>
> Cc: 71835@debbugs.gnu.org
> Date: Sat, 29 Jun 2024 10:39:40 +0100
> 
> > Yes, that's how this feature was implemented (and documented).
> 
> I checked the documentation before submitting and didn't see anything in the 
> documentation to suggest that using this feature would work differently in 
> the mode line and header line.  The documentation for header-line-format 
> describes it as "analogous to mode-line-format", while the info manual at 
> (elisp) Header Lines says it "works just like the mode line feature".  
> Perhaps a warning in one of these places that the right-align doesn't work 
> reliably here would be helpful.

>From the ELisp manual:

 -- Variable: mode-line-format-right-align
     Anything following this symbol in ‘mode-line-format’ will be
     right-aligned.

It doesn't mention header-line-format.