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New unicode-graphemes addon.

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Handle grapheme cluster lookup as well as wcwidth.
This is based on Unicode 15, and could replace the unicode11 addon.
This commit is contained in:
Per Bothner
2023-05-16 18:31:31 -07:00
parent 7a7f4f0add
commit 2f7fe1189c
28 changed files with 1055 additions and 49 deletions
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src/common/buffer/BufferLine.ts
+6 -2
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@@ -227,7 +227,7 @@ export class BufferLine implements IBufferLine {
* onto a leading char. Since we already set the attrs
* by the previous `setDataFromCodePoint` call, we can omit it here.
*/
public addCodepointToCell(index: number, codePoint: number): void {
public addCodepointToCell(index: number, codePoint: number, width: number): void {
let content = this._data[index * CELL_SIZE + Cell.CONTENT];
if (content & Content.IS_COMBINED_MASK) {
// we already have a combined string, simply add
@@ -245,8 +245,12 @@ export class BufferLine implements IBufferLine {
// simply set the data in the cell buffer with a width of 1
content = codePoint | (1 << Content.WIDTH_SHIFT);
}
this._data[index * CELL_SIZE + Cell.CONTENT] = content;
}
if (width) {
content &= ~Content.WIDTH_MASK;
content |= width << Content.WIDTH_SHIFT;
}
this._data[index * CELL_SIZE + Cell.CONTENT] = content;
}
public insertCells(pos: number, n: number, fillCellData: ICellData, eraseAttr?: IAttributeData): void {