No, they both got it from Common Lisp (ca 1984) | Hacker News

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		mahmud on Aug 9, 2017 \| parent \| context \| favorite \| on: JavaScript for People Who Hate JavaScript No, they both got it from Common Lisp (ca 1984)

xenophonf on Aug 9, 2017 | [–]

Is that a Common Lisp thing or something that predates the ANSI standard? SBCL doesn't like that syntax:

  * 10_000
  
  debugger invoked on a UNBOUND-VARIABLE: The variable |10_000| is unbound.

According to the Common Lisp HyperSpec, "_" is an alphabetic constituent character:

http://www.lispworks.com/documentation/HyperSpec/Body/02_ad....

http://www.lispworks.com/documentation/HyperSpec/Body/02_adb...

kazinator on Aug 9, 2017 | [–]

Rather, perhaps, Ada 83.

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