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terminal: fast-path ASCII on char width

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This commit is contained in:
Mitchell Hashimoto
2024-02-08 21:28:14 -08:00
parent c838bfc1c1
commit 8d891fb05c
1 changed files with 4 additions and 2 deletions
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6
src/terminal/Terminal.zig
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@ -870,8 +870,10 @@ pub fn print(self: *Terminal, c: u21) !void {
}
// Determine the width of this character so we can handle
// non-single-width characters properly.
const width: usize = @intCast(unicode.table.get(c).width);
// non-single-width characters properly. We have a fast-path for
// byte-sized characters since they're so common. We can ignore
// control characters because they're always filtered prior.
const width: usize = if (c <= 0xFF) 1 else @intCast(unicode.table.get(c).width);
// Note: it is possible to have a width of "3" and a width of "-1"
// from ziglyph. We should look into those cases and handle them