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bug#37176: 27.0.50; recursive-edit interrupted by invokation of emacscli

From: Stefan Monnier
Subject: bug#37176: 27.0.50; recursive-edit interrupted by invokation of emacsclient
Date: Sun, 25 Aug 2019 14:08:01 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

> Stefan, this is the result of your code from 13 years ago in
> server.el:
>   (when (> (recursion-depth) 0)
>     ;; We're inside a minibuffer already, so if the emacs-client is trying
>     ;; to open a frame on a new display, we might end up with an unusable
>     ;; frame because input from that display will be blocked (until exiting
>     ;; the minibuffer).  Better exit this minibuffer right away.
>     ;; Similarly with recursive-edits such as the splash screen.
>     (run-with-timer 0 nil (lambda () (server-execute-continuation proc)))
>     (top-level)))
> I could understand the rationale with the minibuffer, but I don't
> think I understand why the recursive-edit scenario needs the same
> treatment.  Can you explain?

I can't remember wanting to do it for recursive-edit, so I'm pretty sure
the use of recursion-depth is just careless here and using
minibuffer-depth should work just as well.


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