bug#47205: 27.1.91; [bug] unexpected input event interrupted expand-file

[Michael Albinus]

LinSun via "Bug reports for GNU Emacs, the Swiss army knife of text
editors" <bug-gnu-emacs@gnu.org> writes:

Hi,

> There is a bug that `helm-projectile-find-file' is interrupted by an
> unexpected input event. After inspecting emacs code, I found it can
> simply reproduce by follow code, and the expected out is a path,
> while actually result is t:
>
> emacs --batch --eval "(message \"%s\" (catch 'input
> (let ((throw-on-input 'input)) (expand-file-name \"a.iso/b\"
> \"/\"))))"
>
> From the backtrace, it seems caused by `tramp-archive-file-name-handler’.
>
> How to avoid input event in this situation? Thanks

This input event is expected. You expand the file name "a.iso/b", which
is recognized as archive due to the ".iso/" extension. This triggers the
Tramp archive file name handler, which is implemented using D-Bus. The
input event is a D-Bus event, as you can see:

--8<---------------cut here---------------start------------->8---
# emacs --batch --eval "(message \"%s %s\" (catch 'input (let ((throw-on-input 
'input)) (expand-file-name \"a.iso/b\" \"/\"))) last-input-event)"

=> t (dbus-event :system 2 2 org.freedesktop.DBus :1.527417 nil nil nil 
dbus-call-method-handler)
--8<---------------cut here---------------end--------------->8---

Which problem do you have with D-Bus events?

Best regards, Michael.