diff --git a/lldb/test/Shell/.clang-format b/lldb/test/Shell/.clang-format
new file mode 100644
--- /dev/null
+++ b/lldb/test/Shell/.clang-format
@@ -0,0 +1,3 @@
+BasedOnStyle: LLVM
+# We don't want clang-format to introduce line breaks in RUN commands.
+ColumnLimit: 999