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bug#32851: 26.1.50; show-paren-mode disables off-screen-paren-match

From: Eli Zaretskii
Subject: bug#32851: 26.1.50; show-paren-mode disables off-screen-paren-match
Date: Thu, 27 Sep 2018 13:43:32 +0300

> From: Stefan Guath <address@hidden>
> Date: Thu, 27 Sep 2018 11:35:06 +0200
> When show-paren-mode is enabled, the only respected setting for 
> blink-matching-paren is "any other non-nil
> value" which echos matched parens only when they are off-screen. The settings 
> t, 'jump and 'jump-offscreen
> are disabled.
> I can understand why the settings t and 'jump are disregarded since it would 
> just be a redundant functionality
> of show-paren-mode. But I don't understand why the setting 'jump-offscreen is 
> disregarded. I think it's a better
> option than "echo match off screen paren" since i) a jump (i.e. a scroll) 
> gives more context than a one-liner in
> the echo area, and ii) it's very convenient to get a semantic based scroll 
> operation automatically.

Did you try to remove the condition that show-paren-mode is active?
When I try that, I see an unpleasant effect: when blink-matching-paren
jumps off-screen, the wrong opening parenthesis is highlighted
(although the jump is to the right place).

So allowing jump-offscreen and show-paren-mode to coexist will need
more changes than just removing the condition.

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