terminal emulator: clear scrollback buffer when resetting to initial state

[ghost]

Fixes utility 'reset' not being able to clear scrollback buffer.

[snogglethorpe]

BTW, is this the behavior of xterm upon receiving the same code? I presume most terminal uses these days are roughly aimed at xterm, and so that behavior would be the most well tested in terms of usability. [E.g., I'm thinking it would be really unfortunate if typing Ctl-L in bash cleared the scrollback buffer...] Thanks,

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-miles 2019年12月23日(月) 15:32 Fredrik Fornwall <notifications@github.com>:

Merged #1390 <#1390> into master. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#1390?email_source=notifications&email_token=AADBGWR34YRJAK7T47UWJMDQ2FDBVA5CNFSM4J6IKDY2YY3PNVWWK3TUL52HS4DFWZEXG43VMVCXMZLOORHG65DJMZUWGYLUNFXW5KTDN5WW2ZLOORPWSZGOVUZVQOI#event-2905823289>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AADBGWUKMEZ5BYICX5DS4YDQ2FDBVANCNFSM4J6IKDYQ> .

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[ghost]

I'm thinking it would be really unfortunate if typing Ctl-L in bash

CTRL-L never requests terminal to be reset. It just clears the current screen (equivalent to command clear). Note that this shortcut is shell-specific.

RIS sequence (sent by reset utility) does a lot more things like resetting terminal parameters and clearing memory including scrollback buffer and in some implementations even clipboard.