bug#81559: 31.0.91; speedbar does not follow Dired and shell-dirtrack-mode

On Fri, Aug 14, 2026 at 11:18 AM Sean Whitton <[email protected]>
wrote:

> Daniel Mendler via "Bug reports for GNU Emacs, the Swiss army knife of
> text editors" [09/Aug  6:10pm +02] wrote:
> > +                              (not default-directory))
>
> A buffer will only default-directory nil if someone has specifically set
> that, right?  And generally it would be inadvisable.  So this condition
> will always be true?
>

One other case I'm aware of.  In master, work buffers will clear
default-directory (along with all other state) when a work buffer is
returned to the shared pool.