owenca wrote:

> I added code to count the number of characters in the escape sequence 
> probably just because the block of code used to have a comment saying someone 
> should add the feature.

> I am not sure we should support the trigraph. I don't know anyone who uses 
> it. The C2y draft does not mention it. Not even in the change log that it got 
> removed. To stop the program from crashing, should I remove all the code for 
> handling it instead?

+1.

https://github.com/llvm/llvm-project/pull/147156
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