JDevlieghere wrote:
@Michael137 I looked into adding the diagnostic you asked about and while the
implementation is relatively straightforward, I'm even more convinced that I
don't think it belongs there because it's a semantic rather than a syntax
error.
We can detect a scope followed by an alternative scope, i.e. something like
`{{foo}|bar}` but what about something like `{foo|bar}`. Just like a scope,
`foo` will always resolve, so technically `bar` is unreachable. Should we
diagnose this too? And what about `{${frame.pc}||bar}`. The empty string
between the two pipes will always resolve. In other words, I don't think this
warrants special casing as there are plenty of other scenarios that trigger
similar behavior that would be much harder to diagnose.
https://github.com/llvm/llvm-project/pull/137751
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