Unicode non-character being treat as space on Firefox/Chrome

[Allen Wirfs-Brock]

clause 10.1: 

ECMAScript code is expressed using Unicode. ECMAScript source text is a sequence of code points. All Unicode code point values from U+0000 to U+10FFFF, including surrogate code points, may occur in source text where permitted by the ECMAScript grammars.


https://tc39.github.io/ecma262/#sec-white-space <https://tc39.github.io/ecma262/#sec-white-space> exactly defines which specific code units are treated as Whitespae by the ECMAScript grammar. It does not include unassigned code points in the set of valid Whitespace

Allen


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