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server/panes/grid: Document dropping 0-width chars

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and add a reference to the issue discussing/tracking this (https://github.com/zellij-org/zellij/issues/1538).
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har7an 2022-10-20 15:59:12 +00:00 • committed by GitHub
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zellij-server/src/panes/grid.rs
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@ -1193,6 +1193,10 @@ impl Grid {
} }
pub fn add_character(&mut self, terminal_character: TerminalCharacter) { pub fn add_character(&mut self, terminal_character: TerminalCharacter) {
let character_width = terminal_character.width; let character_width = terminal_character.width;
// Drop zero-width Unicode/UTF-8 codepoints, like for example Variation Selectors.
// This breaks unicode grapheme segmentation, and is the reason why some characters
// aren't displayed correctly. Refer to this issue for more information:
// https://github.com/zellij-org/zellij/issues/1538
if character_width == 0 { if character_width == 0 {
return; return;
} }