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[ruby/reline] windows clear screen with \e 2 J

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Windows Terminal does smart screen clearing when \e 2 J (not clear entire screen but scrolls down just needed)

On consoles not support sequences, ruby still converts it to API call.

https://github.com/ruby/reline/commit/c00930dab9
This commit is contained in:
YO4 2021-12-11 23:40:01 +09:00 committed by git
parent 2c415cda85
commit 65cb250cb1
1 changed files with 1 additions and 10 deletions
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11
lib/reline/windows.rb
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@ -390,16 +390,7 @@ class Reline::Windows
end
def self.clear_screen
return unless csbi = get_console_screen_buffer_info
buffer_width = csbi[0, 2].unpack1('S')
attributes = csbi[8, 2].unpack1('S')
_window_left, window_top, _window_right, window_bottom = *csbi[10,8].unpack('S*')
fill_length = buffer_width * (window_bottom - window_top + 1)
screen_topleft = window_top * 65536
written = 0.chr * 4
@@FillConsoleOutputCharacter.call(@@hConsoleHandle, 0x20, fill_length, screen_topleft, written)
@@FillConsoleOutputAttribute.call(@@hConsoleHandle, attributes, fill_length, screen_topleft, written)
@@SetConsoleCursorPosition.call(@@hConsoleHandle, screen_topleft)
@@output.write "\e[2J" "\e[H"
end
def self.set_screen_size(rows, columns)