Syntax errors in Qt source qmake projects

Hi! I'm developing qmake replacement called qmake-ng (https://github.com/eraxillan/qmake-ng). Currently it is at early alpha stage. Only parser implemented, but tool already can serve one as a strict linter.

So, i've run it on Qt source qmake projects and find several syntax issues:

1) https://github.com/qt/qtbase/blob/5.10/mkspecs/features/winrt/package_manifest.prf#L100

Extra closing parenthesis on the line end

2) https://github.com/qt/qtbase/blob/5.10/mkspecs/features/spec_post.prf#L38

Extra semicolon on the line end

3) https://github.com/qt/qtbase/blob/5.10/mkspecs/features/qt_configure.prf#L1010

Extra semicolon on the line end

4) https://github.com/qt/qtwebengine/blob/5.10/mkspecs/features/platform.prf#L147

Extra colon (need only one instead of two)

5) https://github.com/qt/qtwebengine/blob/5.10/mkspecs/features/configure.prf#L52

Extra semicolon on the line end

6) https://github.com/qt/qtremoteobjects/blob/5.10/tests/auto/integration_multiprocess/server/server.pro#L16

Backslash on the line end is absent

7) https://github.com/qt/qtbase/blob/5.10/tests/auto/tools/qmake/testdata/export_across_file_boundaries/foo.pro#L12

https://github.com/qt/qtbase/blob/5.10/tests/auto/tools/qmake/testdata/export_across_file_boundaries/foo.pro#L16

Probably "\$\$" instead of "\$$"?

8) https://github.com/qt/qtbase/blob/5.10/tests/auto/network/ssl/ssl.pro#L16

Extra backslash on the line end

9) https://github.com/qt/qtbase/blob/5.10/src/plugins/platforms/windows/windows.pri#L56

Backslash on the line end is absent

10) https://github.com/qt/qtbase/blob/5.10/src/plugins/sqldrivers/configure.pri#L54

Extra square bracket on the line end

11) https://github.com/qt/qtbase/blob/5.10/src/widgets/util/util.pri#L31

Extra backslash on the line end

12) https://github.com/qt/qtmultimedia/blob/5.10/examples/multimedia/multimedia.pro#L14

Extra backslash on the line end

13) https://github.com/qt/qtdeclarative/blob/5.10/tests/auto/quick/pointerhandlers/pointerhandlers.pro#L9

Extra backslash on the line end

14) https://github.com/qt/qtconnectivity/blob/5.10/src/bluetooth/osx/osxbt.pri#L3

C-style comment ("//") instead of qmake one ("#")

With best regards, Alexander

P.S. Why those issues just ignored by original qmake, i.e. build passed?