On Thu, 26 Aug 2021 at 16:06, Lars Ingebrigtsen <larsi@gnus.org> wrote:

> Augusto Stoffel <arstoffel@gmail.com> writes:
>
>> Great!  Another useful addition might be OSC 7 to report the working
>> directory.  This would be much simpler and more reliable than
>> 'shell-dirtrack-mode', but needs a small configuration in the shell as
>> well (append some stuff to $PS1 or $PROMPT_COMMAND)
>
> Yes, that sounds quite useful.
>

I've attached a patch to handle OSC 7, which is a protocol for the
inferior process to tell the terminal about directory changes.  This
replaces the functionality of shell-dirtrack-mode and dirtrack-mode,
perhaps in a less hacky way.

Unfortunately, it needs a bit of configuration on the shell side too (no
system will be preconfigured to emit OSCs to a dumb terminal).  A
slightly naive approach is run

  PROMPT_COMMAND='printf "\e]7;file://%s%s\e\\" "$HOSTNAME" "$PWD"'

or add this to the bashrc file.

On my system bash comes with a `__vte_osc7' function which is similar
but slightly more robust (it urlencodes the PWD).

(I've also removed some borderline paranoid checks on the variable
`comint-last-output-start' which I had copied from ansi-color.  On
closer inspection, those checks are working around a bug in gdb-mi.
Good opportunity to check if that bug was fixed.)