[clangd] Ignore comments in clangd input, so we can write tests without sed.

Another attempt on making this work on windows.

llvm-svn: 294312

clang-tools-extra/clangd/ClangDMain.cpp

@@ -56,6 +56,11 @@ int main(int argc, char *argv[]) {
     if (LineRef.trim().empty())
       continue;
 
+    // We allow YAML-style comments. Technically this isn't part of the
+    // LSP specification, but makes writing tests easier.
+    if (LineRef.startswith("#"))
+      continue;
+
     unsigned long long Len = 0;
     // FIXME: Content-Type is a specified header, but does nothing.
     // Content-Length is a mandatory header. It specifies the length of the

clang-tools-extra/test/clangd/formatting.test

@@ -1,5 +1,5 @@
-# REQUIRES: shell
-# RUN: sed -e '/^#/d' -e 's/\r*$/\r/' %s | clangd | FileCheck %s
+# RUN: clangd < %s | FileCheck %s
+# It is absolutely vital that this file has CRLF line endings.
 #
 Content-Length: 125