[llvm] [RemoveDIs] Update syntax highlighting to include debug records (PR #93660)

[Orlando Cazalet-Hyams via llvm-commits]

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@@ -34,7 +34,8 @@ patterns:
     captures:
       1:
         name: storage.type.llvm
-  - match: "\\badd\\b|\
+  - match: "(?<=\\s|^)#dbg_(assign|declare|label|value)\\b\
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OCHyams wrote:

The other lines end `|\` - I assume this one should too?

Can you explain what `(?<=\\s|^)` is doing please for the uninitiated?

https://github.com/llvm/llvm-project/pull/93660