Upstream Espruino Meta Issue

[kiranshila]

I'd like to keep an issue open for the things we do that "patch" inconsistencies in the Espruino interpreter. The less we have to do to the compiled CLJS, the better I think. So if we close issues that "fix" bugs but don't really fix the interpreter, we should note that those bugs really still do exists and once they get fixed upstream, revert our change and really close the issue.

Issues we've patched that are also patched in upstream, waiting for binary release to revert our fix

• ReferenceError on (function(){return arguments[0];})(undefined); (Exceptions thrown on undefined returns from muli-arity CLJS methods) Return value of write calls not properly handled #3 Accessing undefined argument via arguments causes error  espruino/Espruino#1691
• "b" equivalent to "undefined" in pr "b" evaluates to undefined #15 Regex doesn't recognize difference between \b espruino/Espruino#1906

Issues we've patched, but still exist upstream

• All of the regex edge cases, like Problem parsing a regex #2 but there are a lot of them. See

  esprit/src/esprit/make_rom.clj

  Lines 9 to 18 in 1b55419

  	(let [main-js (-> (slurp "out/main.js")
  	(string/replace "arguments" (str "[" argument-global "=arguments," argument-global "][1]"))
  	(string/replace "/[\\\\\"\\b\\f\\n\\r\\t]/g" "/[\\\\\"\\f\\n\\r\\t]/g")
  	(string/replace "goog.NONCE_PATTERN_=/^[\\w+/_-]+[=]{0,2}$/" "goog.NONCE_PATTERN_=null")
  	(string/replace "/^((https:)?\\/\\/[0-9a-z.:[\\]-]+\\/|\\/[^/\\\\]|[^:/\\\\%]+\\/|[^:/\\\\%]*[?#]|about:blank#)/i" "null")
  	(string/replace "/^(?:(?:https?|mailto|ftp):|[^:/?#]*(?:[/?#]|$))/i" "null")
  	(string/replace "a: {" "{")
  	(string/replace "a:for" "for")
  	(string/replace "goog.uri.utils.splitRe_=/^(?:([^:/?#.]+):)?(?:\\/\\/(?:([^/?#]*)@)?([^/#?]*?)(?::([0-9]+))?(?=[/#?]|$))?([^?#]+)?(?:\\?([^#]*))?(?:#([\\s\\S]*))?$/" "goog.uri.utils.splitRe_=null")
  	(string/replace "= /^(?:([^:/?#.]+):)?(?:\\/\\/(?:([^/?#]*)@)?([^/#?]*?)(?::([0-9]+))?(?=[/#?]|$))?([^?#]+)?(?:\\?([^#]*))?(?:#([\\s\\S]*))?$/" "= null"))

• try/catch doesn't return the value of try on success - it must be wrapped in a fn and called with return

Issues that we've not patched, but are patched upstream, waiting for binary release to close

• Math/floor broken nil for Math/floor #7 Math.floor returns values equal to null espruino/Espruino#1865

Issues that we've not patched and still exist upstream

• Printing nested structures crashes the board #17
• Multimethods throw a stack overflow #28