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bug#56561: 29.0.50; Infloop in try_window
From: |
Po Lu |
Subject: |
bug#56561: 29.0.50; Infloop in try_window |
Date: |
Sat, 16 Jul 2022 11:11:52 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.91 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
> On second thought, I take this back. I don't see how we could have a
> blank tooltip. We call try_window just so we could compute the size
> of the text in it, which then allows us to know the size of the
> tooltip. The situation where nrows_scale_factor is increased happens
> when we get to the bottom of the window, which for a tooltip means we
> already laid out all the text and are just producing empty glyph rows
> beyond the end of the text. ncols_scale_factor could theoretically
> happen before we reach the end of the text, but I'd like to see
> something like that happening before I believe it; and even if it does
> happen in the very first line, the tooltip will not be empty, just
> truncated.
No, we call try_window to generate the window contents, and then call
update_single_window followed by flush_frame to immediately flush the
contents to display.
This is because redisplay actually cannot run by itself in some cases
where we do want tooltips to be displayed.
> We could add an assertion to verify that try_window gets to ZV in this
> case before it returns, if we want to be able to detect those cases.
This could still work. I think `TRY_WINDOW_IGNORE_FONTS_CHANGE' means
the caller isn't ready for try_window to fail.
- bug#56561: 29.0.50; Infloop in try_window, (continued)
- bug#56561: 29.0.50; Infloop in try_window, Po Lu, 2022/07/17
- bug#56561: 29.0.50; Infloop in try_window, Eli Zaretskii, 2022/07/17
- bug#56561: 29.0.50; Infloop in try_window, Po Lu, 2022/07/17
- bug#56561: 29.0.50; Infloop in try_window, Eli Zaretskii, 2022/07/17
- bug#56561: 29.0.50; Infloop in try_window, Po Lu, 2022/07/17
- bug#56561: 29.0.50; Infloop in try_window, Eli Zaretskii, 2022/07/18
- bug#56561: 29.0.50; Infloop in try_window, Po Lu, 2022/07/18
- bug#56561: 29.0.50; Infloop in try_window, Eli Zaretskii, 2022/07/21
- bug#56561: 29.0.50; Infloop in try_window, Po Lu, 2022/07/21
- bug#56561: 29.0.50; Infloop in try_window, Po Lu, 2022/07/15
- bug#56561: 29.0.50; Infloop in try_window,
Po Lu <=
- bug#56561: 29.0.50; Infloop in try_window, Po Lu, 2022/07/15
- bug#56561: 29.0.50; Infloop in try_window, Michael Welsh Duggan, 2022/07/15