Stop Git from messing with my newlines

I’m sorry, but I just hate when Git is messing with my files… That’s just not its job!

warning: CRLF will be replaced by LF in …
The file will have its original line endings in your working directory.

Local fix

To fix it on your computer, set core.autocrlf to `false.

# This shows what it's set to now, and where
> git config --show-origin core.autocrlf

Then either edit the file manually, or do one of the following:

# System level (might disappear with git upgrades?)
> git config --system core.autocrlf false

# User level (probably preferred)
> git config --global core.autocrlf false

# Repo level (no point, use .gitattributes instead)
> git config --local core.autocrlf false

Shared repository fix

For shared projects, others might not have set this or even want to set this, so to prevent issues there, creating a .gitattributes file at the root of the repo with the following contents should fix things:

* -text

Source: How to express core.autocrlf = false with .gitattributes

Renormalization

For already messed up repos or working-copies, after changing core.autocrlf, you might be able to renormalize the files one of the methods described in this answer on StackOverflow.