Some projects don't load, giving a BSOD

Expected Behavior

Projects load when you go to their project page or straight to the editor.

Actual Behavior

There are a few projects that don’t load, giving a Blue Screen of Death. I believe they likely have different causes, but I would like to track them in this issue.

Here are 2: https://scratch.mit.edu/projects/281999647/ gives these errors: Error: Error in Scratch GUI [location=https://scratch.mit.edu/projects/281999647/editor]: RangeError: Maximum call stack size exceeded

gui Unhandled Error: Error: Error in Scratch GUI [location=https://scratch.mit.edu/projects/281999647/editor]: RangeError: Maximum call stack size exceeded

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(This is filed in https://github.com/LLK/scratch-parser/issues/56)

https://scratch.mit.edu/projects/286851747/ gives these errors: www Unhandled project parsing error: SyntaxError: Unexpected token e in JSON at position 5234

Error: Error in Scratch GUI [location=https://scratch.mit.edu/projects/286851747/]: SyntaxError: Unexpected token e in JSON at position 5234

gui Unhandled Error: Error: Error in Scratch GUI [location=https://scratch.mit.edu/projects/286851747/]: SyntaxError: Unexpected token e in JSON at position 5234

This is a different issue from https://github.com/LLK/scratch-gui/issues/4649 and it does not give the assetid of null error in the console.

Steps to Reproduce

Load one of those projects Note: see the errors roll in.

Operating System and Browser

Mac Chrome

[paulkaplan]

@kchadha It looks like that second project (286851747) is a result of a parser error. It has the string ...have\\been... which gets stripped by the parser to just have\een by https://github.com/LLK/scratch-parser/blob/master/lib/parse.js#L19

I can confirm this by trying to name a sprite e.g. “have\been” and watching the server fail to parse/save it.

[apple502j]

@benjiwheeler For the backspace, this regex should help: (?<!\\)(\\\\)*\\b The problem is, negative lookbehind is not commonly supported!