[llvm] [lit] Fix substitutions containing backslashes (PR #103042)

[Joel E. Denny via llvm-commits]

Martin =?utf-8?q?Storsj=C3=B6?= <martin at martin.st>
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In-Reply-To: <llvm.org/llvm/llvm-project/pull/103042 at github.com>


jdenny-ornl wrote:

LGTM besides the one nit.  Thanks for working on this.

https://github.com/llvm/llvm-project/pull/103042