[PATCH] D42372: [clang-format] Ignore UnbreakableTailLength sometimes during breaking

[Krasimir Georgiev via Phabricator via cfe-commits]

krasimir created this revision.
Herald added subscribers: cfe-commits, klimek.

This patch fixes an issue where the UnbreakableTailLength would be counted towards
the length of a token during breaking, even though we can break after the token.

For example, this proto text with column limit 20

  # ColumnLimit: 20  V
  foo: {
    bar: {
      bazoo: "aaaaaaa"
    }
  }

was broken:

  # ColumnLimit: 20  V
  foo: {
    bar: {
      bazoo:
          "aaaaaaa"
    }
  }

because the 2 closing `}` were counted towards the string literal's `UnbreakableTailLength`.


Repository:
  rC Clang

https://reviews.llvm.org/D42372

Files:
  lib/Format/BreakableToken.cpp
  lib/Format/BreakableToken.h
  lib/Format/ContinuationIndenter.cpp
  unittests/Format/FormatTestRawStrings.cpp
  unittests/Format/FormatTestTextProto.cpp

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