[Webkit-unassigned] [Bug 176434] New: FIXME Bug: Add code if needed to throw Syntax errors for bad named capture references in String.prototype.replace

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=176434

            Bug ID: 176434
           Summary: FIXME Bug: Add code if needed to throw Syntax errors
                    for bad named capture references in
                    String.prototype.replace
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: msaboff at apple.com

The current proposed named capture groups spec text specifies that we should throw a Syntax Error when processing the replacement string to String.prototype.replace() if there are malformed named capture groups references.  This would be the first type of malformed replacement string text that would cause a throw.  It seems out of place with the rest of the rules for various $<token> replacements.  We have file an issue against the current spec text at https://github.com/tc39/proposal-regexp-named-groups/issues/29.  If we don't prevail, then we'll need to add the throw(SyntaxError, ...) code.

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