[clangd] Handle windows line endings in QueryDriver

[kadircet]

Summary

fixes second case of https://github.com/clangd/clangd/issues/93

clang-tools-extra/trunk/clangd/QueryDriverDatabase.cpp

 
 std::vector<std::string> parseDriverOutput(llvm::StringRef Output) {
   std::vector<std::string> SystemIncludes;
   constexpr char const *SIS = "#include <...> search starts here:";
   constexpr char const *SIE = "End of search list.";
   llvm::SmallVector<llvm::StringRef, 8> Lines;
   Output.split(Lines, '\n', /*MaxSplit=*/-1, /*KeepEmpty=*/false);
 
-  auto StartIt = std::find(Lines.begin(), Lines.end(), SIS);
+  auto StartIt =
+      std::find_if(Lines.begin(), Lines.end(),
+                   [](llvm::StringRef Line) { return Line.trim() == SIS; });
   if (StartIt == Lines.end()) {
     elog("System include extraction: start marker not found: {0}", Output);
     return {};
   }
   ++StartIt;
   const auto EndIt = std::find(StartIt, Lines.end(), SIE);
   if (EndIt == Lines.end()) {
     elog("System include extraction: end marker missing: {0}", Output);

clang-tools-extra/trunk/clangd/test/system-include-extractor.test

 # RUN: rm -rf %t.dir && mkdir -p %t.dir
 
 # Generate a mock-driver that will print %temp_dir%/my/dir and
 # %temp_dir%/my/dir2 as include search paths.
 # RUN: echo '#!/bin/bash' >> %t.dir/my_driver.sh
 # RUN: echo '[ "$0" = "%t.dir/my_driver.sh" ] || exit' >> %t.dir/my_driver.sh
 # RUN: echo 'echo line to ignore >&2' >> %t.dir/my_driver.sh
-# RUN: echo 'echo \#include \<...\> search starts here: >&2' >> %t.dir/my_driver.sh
+# RUN: echo 'echo -e "#include <...> search starts here:\r" >&2' >> %t.dir/my_driver.sh
 # RUN: echo 'echo %t.dir/my/dir/ >&2' >> %t.dir/my_driver.sh
 # RUN: echo 'echo %t.dir/my/dir2/ >&2' >> %t.dir/my_driver.sh
 # RUN: echo 'echo End of search list. >&2' >> %t.dir/my_driver.sh
 # RUN: chmod +x %t.dir/my_driver.sh
 
 # Create header files my/dir/a.h and my/dir2/b.h
 # RUN: mkdir -p %t.dir/my/dir
 # RUN: touch %t.dir/my/dir/a.h