Normalize invisible and whitespace characters on copy#88
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francinelucca
approved these changes
Jun 16, 2026
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Pull request overview
This PR expands normalizeText() in the clipboard copy pipeline to reduce copy/paste spoofing by converting all Unicode space-separator characters to ASCII spaces and stripping selected invisible/zero-width format characters, with accompanying tests.
Changes:
- Extend
normalizeText()to normalize Unicode space separators to' 'and strip a set of invisible/zero-width characters. - Add tests that iterate through multiple Unicode whitespace and invisible characters to validate clipboard output.
Show a summary per file
| File | Description |
|---|---|
src/clipboard.ts |
Broadens text normalization for clipboard writes (space separators → ASCII space; some invisible characters stripped). |
test/test.js |
Adds coverage for additional Unicode whitespace normalization and invisible-character stripping behaviors. |
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| return text | ||
| .replace(/[\u00A0\u1680\u2000-\u200A\u202F\u205F\u3000]/g, ' ') | ||
| .replace(/[\u200B-\u200D\u2060\uFEFF\u180E]/g, '') |
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| it('strips zero-width and invisible format characters', async function () { | ||
| const zeroWidthChars = ['\u200B', '\u200C', '\u200D', '\u2060', '\uFEFF', '\u180E'] | ||
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Extends
normalizeText()to cover the full range of Unicode characters that render as a space or as nothing, so copied text matches what is shown on screen.Adds tests covering both sets.