From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Cc: Lars Ingebrigtsen <larsi@gnus.org>
Subject: Re: master 79d9f3982f: Add derived-mode test for bug#24176
Date: Mon, 24 Jan 2022 09:53:49 -0500 [thread overview]
Message-ID: <jwvfspd2nml.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <20220124141512.66398C0DA30@vcs2.savannah.gnu.org> (Lars Ingebrigtsen's message of "Mon, 24 Jan 2022 09:15:12 -0500 (EST)")
> +(ert-deftest test-add-font-lock ()
> + (define-derived-mode mode-a fundamental-mode "mode-a"
> + (font-lock-add-keywords nil `(("a" 0 'font-lock-keyword-face))))
> + (define-derived-mode mode-b mode-a "mode-b"
> + (font-lock-add-keywords nil `(("b" 0 'font-lock-builtin-face))))
> + (define-derived-mode mode-c mode-b "mode-c"
> + (font-lock-add-keywords nil `(("c" 0 'font-lock-constant-face))))
> +
> + (with-temp-buffer
> + (mode-c)
> + (should (equal font-lock-keywords
> + '(t (("c" 0 'font-lock-constant-face)
> + ("b" 0 'font-lock-builtin-face)
> + ("a" 0 'font-lock-keyword-face))
> + ("c" (0 'font-lock-constant-face))
> + ("b" (0 'font-lock-builtin-face))
> + ("a" (0 'font-lock-keyword-face)))))))
An interesting other case is:
(defvar mode-a-flk '(("a" 0 'font-lock-keyword-face)))
(define-derived-mode mode-a fundamental-mode "mode-a"
(setq-local font-lock-defaults '(mode-a-flk)))
(define-derived-mode mode-b mode-a "mode-b"
(font-lock-add-keywords nil `(("b" 0 'font-lock-builtin-face))))
(defvar mode-c-flk '(("c" 0 'font-lock-keyword-face)))
(define-derived-mode mode-c mode-b "mode-c"
(setq-local font-lock-defaults '(mode-c-flk)))
-- Stefan
next parent reply other threads:[~2022-01-24 14:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <164303371205.13369.5637099354011397679@vcs2.savannah.gnu.org>
[not found] ` <20220124141512.66398C0DA30@vcs2.savannah.gnu.org>
2022-01-24 14:53 ` Stefan Monnier [this message]
2022-01-24 17:28 ` master 79d9f3982f: Add derived-mode test for bug#24176 Lars Ingebrigtsen
2022-01-24 22:52 ` Stefan Monnier
2022-01-25 12:16 ` Lars Ingebrigtsen
2022-01-25 13:10 ` Stefan Monnier
2022-01-25 14:39 ` Lars Ingebrigtsen
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