Deterministic minimun size for completion menu, even at bottom of screen (for `PromptSession`)#1259

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bobhy wants to merge 9 commits intoprompt-toolkit:masterfrom

bobhy:space-for-menu

Commits on Oct 2, 2020

First hack: ad-hoc calculate height of completion menus.
Bob Hyman
committed
floats_min_preferred_height for FloatContainer
Bob Hyman
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Turn off completions 'show-meta' to get configured number
Bob Hyman
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Allows MultiLineCompletionMenu to hide meta display line
Bob Hyman
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Tighten up floats_min_preferred_height
Bob Hyman
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Right prompt doesn't drop to bottom of screen;
Bob Hyman
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fixup CI failures; rprompt doesn't change in prompt, don't need ConditionalContainer
Bob Hyman
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Fix CI failures
Bob Hyman
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Fix extra blank line when right prompt displayed.
Bob Hyman
committed