Ignore everything except one directory in .gitignore

Question

I have the following directory structure:

/app
/src
    /MyProject
        /FirstProject
            /Controller
                /file-1-1.php
                       


        

Answer 1

This .gitignore will actually work:

/app
/vendor
/web
/src/**/**
!src/**/
!/src/MyProject/SecondProject/Resources/**

mipadi's answer refers to a mechanism introduced in git 2.7.0 and... reversed in 2.7.1!

The only rule left is:

It is not possible to re-include a file if a parent directory of that file is excluded.

Hence the need for white-listing src sub-folders, before white-listing Resources content.

I tested the above with:

> git --version
git version 2.7.1.windows.1