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From: Raphael 'kena' Poss <knz@thaumogen.net>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 39390@debbugs.gnu.org
Subject: bug#39390: 28.0.50; prettify-symbols-mode confuses display when start/end faces are different
Date: Tue, 4 Feb 2020 23:07:07 +0100	[thread overview]
Message-ID: <a2888c08-f6fd-d416-1318-eb8fcb788ea0@thaumogen.net> (raw)
In-Reply-To: <83v9onhdq4.fsf@gnu.org>

On 03-02-2020 16:50, Eli Zaretskii wrote:
> Would it be possible for you to prepare a reproducing recipe, starting
> from "emacs -Q", and loading the minimum number of packages/features
> required to show the problem?

Absolutely, there is not even a single package needed. The following
test file is sufficient to reproduce (run emacs -Q without argument then
copy/paste the entire text into the buffer before starting evaluation):

;; 1) evaluate the following:
(setq prettify-symbols-unprettify-at-point t)
(prettify-symbols-mode 1)
;; 2) observe: the substitution produces (setq abc (λ () t)) as
;;    expected.
;; 3) observe: moving the cursor in and out of the lambda signal
;;    expands the substitutions and back again.  (so far so good)
(setq abc (lambda () t))
;; 3) evaluate the following:
(push '("setq abc" . "@@") prettify-symbols-alist)
(prettify-symbols-mode 0)
(prettify-symbols-mode 1)
;; 4) observe immediately: the substitution has produced (@@ (λ () t))
;;    as expected.
;; 5) move the cursor into the line containing lambda, then around the
;;    substituted keyword then up and/or down.
;; 6) observe:
;;    - the opening parenthesis between "@@" and "λ" is
;;      non-deterministically rendered
;;    - the second "@" is improperly cleaned up when moving the cursor
;;      "into" the substitution






-- 
Raphael 'kena' Poss





  reply	other threads:[~2020-02-04 22:07 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-02 14:45 bug#39390: 28.0.50; prettify-symbols-mode confuses display when start/end faces are different Raphael 'kena' Poss
2020-02-02 17:18 ` Eli Zaretskii
2020-02-02 17:56   ` Raphael 'kena' Poss
2020-02-02 18:03     ` Eli Zaretskii
2020-02-02 18:28       ` Raphael 'kena' Poss
2020-02-02 19:20         ` Eli Zaretskii
2020-02-02 20:00           ` Raphael 'kena' Poss
2020-02-02 20:09             ` Eli Zaretskii
2020-02-02 20:26               ` Raphael 'kena' Poss
2020-02-03 15:50                 ` Eli Zaretskii
2020-02-04 22:07                   ` Raphael 'kena' Poss [this message]
2020-02-16 17:46                     ` Eli Zaretskii
2020-02-16 18:37                       ` Raphael 'kena' Poss
2020-02-16 19:29                         ` Eli Zaretskii
2020-02-16 19:34                           ` Eli Zaretskii
2020-02-16 19:40                             ` Raphael 'kena' Poss
2020-02-16 20:23                               ` Eli Zaretskii
2020-02-17  2:47                                 ` Raphael 'kena' Poss
2020-02-17 11:17                                   ` Tassilo Horn
2020-02-17 12:35                                     ` Raphael 'kena' Poss
2020-02-17 15:59                                       ` Tassilo Horn
2020-02-17 16:06                                         ` Raphael 'kena' Poss
2020-02-17 17:30                                         ` Eli Zaretskii
2020-02-17 18:37                                           ` Raphael 'kena' Poss
2020-02-17 19:24                                             ` Eli Zaretskii
2020-02-17 19:28                                               ` Raphael 'kena' Poss
2020-02-17 20:14                                                 ` Eli Zaretskii
2020-02-17 17:11                                     ` Eli Zaretskii
2020-02-17 17:13                                   ` Eli Zaretskii

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