[clang] bad error message on incorrect string literal #18079 (PR #81670)

[Jon Roelofs via cfe-commits]

================
@@ -100,7 +100,10 @@ def err_raw_delim_too_long : Error<
   "raw string delimiter longer than 16 characters"
   "; use PREFIX( )PREFIX to delimit raw string">;
 def err_invalid_char_raw_delim : Error<
-  "invalid character '%0' character in raw string delimiter"
+  "invalid newline character in raw string delimiter"
----------------
jroelofs wrote:

```suggestion
  "invalid character '%0' in raw string delimiter"
```

https://github.com/llvm/llvm-project/pull/81670