Add a quote character to the sed command to cause it to be quoted.
Hopefully, which will help both gnuwin and MSys versions of sed tokenize
the command line the same way.
# RUN: sed -e "s|INPUT_DIR|%/t.dir|g" %s > %t.test.1
# On Windows, we need the URI in didOpen to look like "uri":"file:///C:/..."
# (with the extra slash in the front), so we add it here.
-# RUN: sed -E -e "s|file://([A-Z]):/|file:///\1:/|g" %t.test.1 > %t.test
+# RUN: sed -E -e 's|"file://([A-Z]):/|"file:///\1:/|g' %t.test.1 > %t.test
# RUN: clangd -lit-test < %t.test 2>&1 | FileCheck -strict-whitespace %t.test
{"jsonrpc":"2.0","id":0,"method":"initialize","params":{}}