bug#13059: frame-title does not update modified toggle on tmpfs

[Lars Ingebrigtsen]

Yi Wang <tririverwangyi@gmail.com> writes:

> If I set frame-title as:
>
> (setq frame-title-format "%b  %* ")
>
> The modified mark * will display correctly for normal files. But for
> files in /tmp (where tmpfs is enabled), the modified mark almost never
> appears (though actually buffer is modified).

(I'm going through old bug reports that unfortunately got little response at
the time.)

I tried reproducing this on Debian/bullseye with Emacs 28 now in this
directory:
 
tmpfs           1.6G  896K  1.6G   1% /run/user/1000

And I was unable to -- the "*" appeared in the frame title as expected.

Are you still seeing this issue in recent Emacs versions?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no