sstwcw added a comment.

Here is one problem:

  clang-format -style='{IndentPPDirectives: BeforeHash, PPIndentWidth: 1, 
IndentWidth: 4, IndentCaseLabels: true}'
  
  actual:
  #define X                                                                     
 \
   switch (x) {                                                                 
 \
       case 0:                                                                  
 \
        break;                                                                  
 \
       default:                                                                 
 \
        break;                                                                  
 \
   }
  
  expected:
  #define X                                                                     
 \
   switch (x) {                                                                 
 \
       case 0:                                                                  
 \
           break;                                                               
 \
       default:                                                                 
 \
           break;                                                               
 \
   }

Me guessing what caused the problem.  You intend for `PPLevel` to mean the 
depth of `#if` sections.  But you accidentally made it change along with 
`Level` where you shouldn't, for example in `UnwrappedLineParser.cpp: 600`.

In addition, I suggest including `PPBranchLevel` in `PPLevel` only instead of 
also in `Level`.



================
Comment at: clang/lib/Format/UnwrappedLineParser.h:47
 
+  /// The preprocessor indent level of the \c UnwrappedLine.
+  int PPLevel;
----------------
Please elaborate what preprocessor indent level means.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D137181/new/

https://reviews.llvm.org/D137181

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