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to_alternate: Switch back to main screen if into_raw_mode fails #4

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Oct 1, 2019

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andersk
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@andersk andersk commented Sep 29, 2019

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@TimonPost
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What is the motivation behind this change?

@zrzka
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zrzka commented Sep 29, 2019

I would guess cleanup? If I ask for alternate screen in raw mode and the function fails, I, as a user, do not want to end up in an inconsistent state like alternate & no raw. Which is not something I asked for. It should give me both or nothing.

@andersk
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andersk commented Sep 30, 2019

Right now if you run any Crossterm application that does to_alternate(true) with stdin piped in from something other than a terminal, the into_raw_mode call fails, and you end up stuck in alternate screen mode even after the application exits, which is an annoying condition that this wrapper type was supposed to avoid.

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zrzka commented Sep 30, 2019

I'd merge this one as it's really useful and make the API / behavior more consistent.

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Yea this is very useful, thanks for the explanation!

@TimonPost TimonPost merged commit 8fe5b7f into crossterm-rs:master Oct 1, 2019
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3 participants