[PATCH] D152305: [clang-format] Add the KeepEmptyLinesAtEOF option

[Owen Pan via Phabricator via cfe-commits]

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Adds an option `KeepEmptyLinesAtEOF` to keep empty lines (up to `MaxEmptyLinesToKeep`) before EOF. This remedies the probably unintentional change in behavior introduced in 3d3ea84a4f8fc, which started to always remove empty lines before EOF.

Fixes https://github.com/llvm/llvm-project/issues/56054 and https://github.com/llvm/llvm-project/issues/63150.


https://reviews.llvm.org/D152305

Files:
  clang/docs/ClangFormatStyleOptions.rst
  clang/docs/ReleaseNotes.rst
  clang/include/clang/Format/Format.h
  clang/lib/Format/Format.cpp
  clang/lib/Format/UnwrappedLineFormatter.cpp
  clang/unittests/Format/ConfigParseTest.cpp
  clang/unittests/Format/FormatTest.cpp

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