[PATCH] D53517: [FileCheck] Parse command-line options from FILECHECK_OPTS

[Joel E. Denny via Phabricator via llvm-commits]

jdenny updated this revision to Diff 172819.
jdenny added a comment.

Address reviewer comments:

- Add comments for empty-string and nullptr arguments.
- Don't imply command-line options are parsed before FILECHECK_OPTS.


https://reviews.llvm.org/D53517

Files:
  llvm/docs/CommandGuide/FileCheck.rst
  llvm/include/llvm/Support/CommandLine.h
  llvm/lib/Support/CommandLine.cpp
  llvm/test/FileCheck/envvar-opts.txt
  llvm/utils/FileCheck/FileCheck.cpp
  llvm/utils/lit/lit/TestingConfig.py

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