.gitattributes

# Have files identified as text files converted to lf on checkin and keep lf on
# checkout
* text=auto eol=lf

# Documentation:

# Checkin:
# https://www.git-scm.com/docs/gitattributes
# When text is set to "auto" ... its line endings are normalized to LF on checkin.
# ...
# If you want to ensure that text files that any contributor introduces to the
# repository have their line endings normalized, you can set the text attribute
# to "auto" for all files.
# * text=auto

# Checkout:
# https://www.git-scm.com/docs/gitattributes
# To control what line ending style is used in the working directory, use the eol attribute
# ...
# Set to string value "lf"
#   This setting forces Git to normalize line endings to LF on checkin and prevents conversion to CRLF when the file is checked out.

# Git config
# When .gitattributes isn't used the core.autocrlf setting comes into play. The
# Git install wizard will present the following radio buttons during
# installation:
# - Checkout Windows-style, commit Unix-style line endings
#     Git will convert LF to CRLF when checking out text files. When committing
#     text files, CRLF will be converted to LF. For cross-platform projects,
#     this is the recommended setting on Windows ("core.autocrlf" is set to "true").
# - Checkout as-is, commit Unix-style line endings
#     Git will not perform any conversion when checking out text files. When
#     committing text files, CRLF will be converted to LF. For cross-platform projects,
#     this is the recommended setting on Unix ("core.autocrlf" is set to "input").
# - Checkout as-is, commit as-is
#     Git will not perform any conversions when checking out or committing
#     text files. Choosing this option is not recommended for cross-platform
#     projects ("core.autocrlf" is set to "false").

# Legacy:
# Older Git versions didn't auto detect which files are text for checkhout so
# you needed to specify the file types for checkhout but this has been fixed.
# See:
# https://stackoverflow.com/questions/29435156/what-will-text-auto-eol-lf-in-gitattributes-do
# https://github.com/git/git/blob/master/Documentation/RelNotes/2.10.0.txt#L248

# See also:
# https://stackoverflow.com/questions/11824428/is-there-a-way-to-determine-the-line-endings-in-a-existing-git-repo
# https://stackoverflow.com/questions/7156694/git-how-to-renormalize-line-endings-in-all-files-in-all-revisions