From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Signal `quit' in a `font-lock-fontify-region-function' Date: Thu, 16 May 2019 19:20:39 -0400 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="264480"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri May 17 01:21:08 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hRPgP-0016dR-AH for ged-emacs-devel@m.gmane.org; Fri, 17 May 2019 01:21:05 +0200 Original-Received: from localhost ([127.0.0.1]:38204 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hRPgO-0000mg-A0 for ged-emacs-devel@m.gmane.org; Thu, 16 May 2019 19:21:04 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:41735) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hRPgB-0000kj-AH for emacs-devel@gnu.org; Thu, 16 May 2019 19:20:52 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hRPgA-0003ha-EM for emacs-devel@gnu.org; Thu, 16 May 2019 19:20:51 -0400 Original-Received: from [195.159.176.226] (port=59936 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hRPg9-0003ga-SK for emacs-devel@gnu.org; Thu, 16 May 2019 19:20:50 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.89) (envelope-from ) id 1hRPg8-0016Ke-K6 for emacs-devel@gnu.org; Fri, 17 May 2019 01:20:48 +0200 X-Injected-Via-Gmane: http://gmane.org/ Cancel-Lock: sha1:2JS2+4BAafdTzhKUolpyOdDPCAw= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:236607 Archived-At: > Error during redisplay: (jit-lock-function ##) signaled (quit) This is indeed the behavior I expect (tho I don't really like it, but I never dared to change jit-lock to set inhibit-quit). > sometimes it doesn't. Is there a difference in behavior in this respect when you try it in the GUI vs in a tty? How 'bout in another OS? Does it happen more often if you wait a while until you starting banging on C-g? E.g. it might be that the event buffer is full (see patch below)? Stefan diff --git a/src/keyboard.c b/src/keyboard.c index 5f2b7afe6d..405790312d 100644 --- a/src/keyboard.c +++ b/src/keyboard.c @@ -3568,12 +3568,15 @@ kbd_buffer_store_buffered_event (union buffered_input_event *event, { /* Don't read keyboard input until we have processed kbd_buffer. This happens when pasting text longer than KBD_BUFFER_SIZE/2. */ + fprintf (stderr, "Too many pending events, putting keyboard on hold!\n"); hold_keyboard_input (); unrequest_sigio (); stop_polling (); } #endif /* subprocesses */ } + else + fprintf (stderr, "event buffer full: dropping event!\n"); Lisp_Object ignore_event;