Text Hygiene

Little Eye detects Text Hygiene when you copy them. Flags invisible characters, bidi controls, NUL bytes, CRLF, and homoglyph mixing.

Examples

zero-width space U+200B between words

helloworld

RTL override U+202E — Trojan Source attack vector

if (admin‮ /* …) {

tag character U+E0041 — hidden ASCII tag

hello󠁁world

NUL byte — cannot be pasted literally; emit via a script

hello\u{0000}world

CRLF line endings — cannot be pasted literally; export from a Windows-style file

line one\r\nline two

RTL mark U+200F mixed with LTR text

hello‏world

Latin↔Cyrillic homoglyph — leading `р` / `а` are Cyrillic

раypal