Xcode 11.1 code coverage data from xccov

In Xcode 10 I was able to get detailed coverage data by using `xccov` tool by calling:
- `xcrun xccov view --file-list` - to get all the paths to sources files
- `xcrun xccov view --file <path_to_source_file> <path_to_xcresult>` - to get line coverage data for the given file.
Looks like in Xcode 11 we should be able to get the same level of details by using `xcrun xccov view --report --files-for-target` and `xcrun xccov view --report --functions-for-file` but it does not work that way.
First issue I expirienced is mangled swift method names. When the `xcresult` file is created while running xcodebuild, the functions names are mangled.

Name                                                                                                                                                                            Coverage
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- --------------
CodeCoverageDemo.app                                                                                                                                                            47.46% (28/59)
    /Users/miwanicki1/TestProjects/CodeCoverageDemo/CodeCoverageDemo/SceneDelegate.swift                                                                                      34.48% (10/29)
        $s16CodeCoverageDemo13SceneDelegateC5scene_13willConnectTo7optionsySo7UISceneC_So0K7SessionCSo0K17ConnectionOptionsCtF                                                  100.00% (6/6)
        $s16CodeCoverageDemo13SceneDelegateC18sceneDidDisconnectyySo7UISceneCF                                                                                             0.00% (0/6

Surprisingly, the issue does not occure when the tests are run in the Xcode.
Second issue is that when using the new xccov with `--report`, I do not get the line-level coverage for an idividual source file. `--files-for-target` seems to return only an overview of the function coverage without enumerating the lines and branches.

2019-10-15 11:55:38.950 xccov[19041:170343] Requested but did not find extension point with identifier Xcode.IDEFoundation.IDEResultKitSerializationConverter
/Users/miwanicki1/TestProjects/CodeCoverageDemo/CodeCoverageDemo/MathDemo.swift:
ID Name                                            Range   Coverage
-- ----------------------------------------------- ------- ------------
0  $s16CodeCoverageDemo04MathC0C3addyS2i_SitF      {5, 6}  83.33% (5/6)
1  $s16CodeCoverageDemo04MathC0C5minusyS2i_SitF    {12, 3} 0.00% (0/3)
2  $s16CodeCoverageDemo04MathC0C8multipleyS2i_SitF {16, 3} 0.00% (0/3)

Anyone had similar problems? What's the recommended way to get the line-level parsable coverage report similar to the format below where 1 means the lines was executed once, 0 the line wasn't executed.

1|    func add(_ a: Int, _ b: Int) -> Int {
1|        if a < 10 {
1|            return a + b
1|        }
0|        if a == 20 {
0|            return 1
0|        }
0|        if a == 30 {
0|           return 2
0|        }
0|
0|        return a + 2 * b
1|    }