" characters need an extra layer of escaping

[dubois]

1. In Visual Studio, add a preprocessor definition PROJECT_NAME="$(ProjectName)".
2. Note that the symbol PROJECT_NAME expands to a string literal inside your .cpp code.
3. Extensions -> Sourcetrail -> Create Compilation Database
4. Note that the .json file contains -D PROJECT_NAME=\"myproject\"
5. Create a project using the .json file and index it. Note that PROJECT_NAME is not a string literal when the project is indexed.

The existing \ causes the quotes to be preserved in the json, but the quotes don't make their way to clang; probably this is because bash or some other shell is interpreting them.

If I hand-modify the json to contain -D PROJECT_NAME=\\\\"myproject\\\\" then all works as expected.