bug#53927: 27.2; shell-mode dir tracking falls out of sync after popd in remote buffers

[Michael Albinus]

Dan McCarthy <daniel.c.mccarthy@gmail.com> writes:

Hi Dan,

> Create a remote shell-mode buffer with C-u M-x shell, using bash as
> the
> remote shell. pushd into another directory, then popd
> back. default-directory and shell-dirstack still have the other
> directory even though the popd took effect in the remote process.
>
> The problem seems to be that shell-prefixed-directory-name returns a
> string like
> "/ssh:dan@solstice:/ssh:dan@solstice:/home/dan/Documents/",
> doubling the remote prefix.
>
> Local shell-mode buffers do not have the problem.

Thanks for the bug report, I could reproduce it locally. The appended
patch fixes this for me, could you please check?

Eli, it is a very simple patch. Any chance to commit it to the emacs-28
branch? Otherwise, I would commit it to master, but we need a marker to
merge it back to the emacs-28 branch after the Emacs 28.1 release.

Best regards, Michael.

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