bug#12067: 24.1; improper menu formatting with multiple \t chars

[Michael Heerdegen]

"Drew Adams" <drew.adams@oracle.com> writes:

> > > emacs -Q
> > > (defcustom foo [:ascii:]
> > >   "..."
> > >   :type
> > >   '(choice :tag "Foobar"
> > >     (const :tag "A\t\t- [:ascii:]"  [:ascii:])
> ...
> >
> > I cannot reproduce this here, neither in Emacs 24.1 nor in the current
> > trunk version.
> > 
> > What I did was copy-paste your example to a fresh Emacs session, then
> > "M-x eval-region RET", then "M-x customize-option RET foo RET" and
> > click the "Value Menu" to display the menu.  It displayed correctly,
> > nicely aligned and with no artifacts.
>
> What can I say?  I do exactly that, with Emacs 24.1 and emacs -Q, and
> I see what
> is in the attached screenshot.

A third version: I see no artifacts, but also no nice alignment.  Looks
like tab chars are formatted for me as spaces with constant width.  (I
use emacs-snapshot on Debian.)