This seems worth doing.

https://codereview.chromium.org/615813004/diff/1/src/preparser.cc
File src/preparser.cc (right):

https://codereview.chromium.org/615813004/diff/1/src/preparser.cc#newcode75
src/preparser.cc:75: if (scanner->LiteralMatches("eval", 4)) {
On 2014/10/01 20:52:18, caitp wrote:
I'm not sure if this should be used for "eval" and "arguments"

eval and arguments should be the unescaped one.

https://codereview.chromium.org/615813004/diff/1/src/scanner.h
File src/scanner.h (right):

https://codereview.chromium.org/615813004/diff/1/src/scanner.h#newcode406
src/scanner.h:406: return UnescapedLiteralMatches(data, length);
On 2014/10/01 20:52:18, caitp wrote:
But if it does turn out to be necessary, I want to use the
unescapedliteralmatches to verify non-string-literals.

Is the only difference here is the literal_contains_escapes? If so,
maybe refactor to share the code?

https://codereview.chromium.org/615813004/

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