[PATCH] D27440: clang-format-vsix: fail when clang-format outputs to stderr

[Manuel Klimek via Phabricator via cfe-commits]

klimek added a reviewer: ioeric.
klimek added a comment.

+eric, who has some experience llvm::Error'ing our interfaces :)
llvm::ErrorOr seems like the right approach here?


https://reviews.llvm.org/D27440