exv added inline comments.

================
Comment at: clang/unittests/Format/FormatTestCSharp.cpp:365
+
+  verifyFormat("test \?\?= ABC;", Style);
+  verifyFormat("test \?\?= true;", Style);
----------------
HazardyKnusperkeks wrote:
> Why do you escape `?`? I've never seen that.
Apparently, ??= is a trigraph for "#" in C, so it must be escaped:

https://en.wikipedia.org/wiki/Digraphs_and_trigraphs#C

To be honest, I'd never heard of this bizarre language "feature" until I wrote 
this patch.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D101702/new/

https://reviews.llvm.org/D101702

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