[PATCH] clang-format: Add ability to align assignment operators

[Matt Oakes]

Completed:

- Align other assignments such as `+=`
- Switch to using `verifyFormat` when possible
- Test multiple assignments on a single line

Still to do:

- Don't align for default parameters
- Ignore assignments within for and if statements

I'm unsure what the best way to detect those two cases are. I thought about checking that either the token before (or two before when a type is given) the first assignment on a line is at the start of the line. Would that be an acceptable solution?


http://reviews.llvm.org/D8821

Files:
  docs/ClangFormatStyleOptions.rst
  include/clang/Format/Format.h
  lib/Format/Format.cpp
  lib/Format/WhitespaceManager.cpp
  lib/Format/WhitespaceManager.h
  unittests/Format/FormatTest.cpp

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