From 63c2bc4c560ed1929e7e0a5fae23a1598bcc14cc Mon Sep 17 00:00:00 2001
From: Chris Brown <77508021+peakschris@users.noreply.github.com>
Date: Sat, 29 Jun 2024 04:26:34 -0400
Subject: [PATCH] fix: substitution

---
 rules/diff_test.bzl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rules/diff_test.bzl b/rules/diff_test.bzl
index 72b98077..453f9558 100644
--- a/rules/diff_test.bzl
+++ b/rules/diff_test.bzl
@@ -173,9 +173,9 @@ fi
 if ! diff {strip_trailing_cr}"$RF1" "$RF2"; then
   MSG={fail_msg}
   if [[ "${{MSG}}"=="" (
-      MSG="why? diff {strip_trailing_cr}"${RF1}" "${RF2}" | cat -v"
+      MSG="why? diff {strip_trailing_cr}"${{RF1}}" "${{RF2}}" | cat -v"
   )
-  echo >&2 "FAIL: files \"{file1}\" and \"{file2}\" differ. ${MSG}"
+  echo >&2 "FAIL: files \"{file1}\" and \"{file2}\" differ. ${{MSG}}"
   exit 1
 fi
 """.format(