Change record status: 
Project: 
Introduced in branch: 
8.x
Description: 

In order to maintain the never hack core mantra, the core .gitignore file has been renamed to example.gitignore. Users who need/want a .gitignore file are expected to copy and edit the example file.

Users who have already edited the stock .gitignore file and checked the modified file into their local git repository will want to use something like the following to maintain their local changes:

cp .gitignore .gitignore.tmp
git pull --rebase
mv .gitignore.tmp .gitignore
git add .gitignore
git rebase --continue
Impacts: 
Site builders, administrators, editors