vc-coding-system-inherit-eol

vc-coding-system-inherit-eol is a variable defined in `vc.el'.
Its value is

t

Documentation:
When non-nil, inherit the EOL format for reading Diff output from the file.

Used in `vc-coding-system-for-diff' to determine the EOL format to use
for reading Diff output for a file. If non-nil, the EOL format is
inherited from the file itself.
Set this variable to nil if your Diff tool might use a different
EOL. Then Emacs will auto-detect the EOL format in Diff output, which
gives better results.