$ cat > makepatch.py <<EOF

  > f = file('eol.diff', 'wb')

  > w = f.write

  > w('test message\n')

  > w('diff --git a/a b/a\n')

  > w('--- a/a\n')

  > w('+++ b/a\n')

  > w('@@ -1,5 +1,5 @@\n')

  > w(' a\n')

  > w('-bbb\r\n')

  > w('+yyyy\r\n')

  > w(' cc\r\n')

  > w(' \n')

  > w(' d\n')

  > w('-e\n')

  > w('\ No newline at end of file\n')

  > w('+z\r\n')

  > w('\ No newline at end of file\r\n')

  > EOF

  $ hg init repo

  $ cd repo

  $ echo '\.diff' > .hgignore

Test different --eol values

  $ python -c 'file("a", "wb").write("a\nbbb\ncc\n\nd\ne")'

  $ hg ci -Am adda

  adding .hgignore

  adding a

  $ python ../makepatch.py

invalid eol

  $ hg --config patch.eol='LFCR' import eol.diff

  applying eol.diff

  $ hg revert -a

force LF

  $ hg --traceback --config patch.eol='LF' import eol.diff

  applying eol.diff

  $ python -c 'print repr(file("a","rb").read())'

  'a\nyyyy\ncc\n\nd\ne'

  $ hg st

force CRLF

  $ hg up -C 0

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg --traceback --config patch.eol='CRLF' import eol.diff

  applying eol.diff

  $ python -c 'print repr(file("a","rb").read())'

  'a\r\nyyyy\r\ncc\r\n\r\nd\r\ne'

  $ hg st

auto EOL on LF file

  $ hg up -C 0

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg --traceback --config patch.eol='auto' import eol.diff

  applying eol.diff

  $ python -c 'print repr(file("a","rb").read())'

  'a\nyyyy\ncc\n\nd\ne'

  $ hg st

auto EOL on CRLF file

  $ python -c 'file("a", "wb").write("a\r\nbbb\r\ncc\r\n\r\nd\r\ne")'

  $ hg commit -m 'switch EOLs in a'

  $ hg --traceback --config patch.eol='auto' import eol.diff

  applying eol.diff

  $ python -c 'print repr(file("a","rb").read())'

  'a\r\nyyyy\r\ncc\r\n\r\nd\r\ne'

  $ hg st

auto EOL on new file or source without any EOL

  $ python -c 'file("noeol", "wb").write("noeol")'

  $ hg add noeol

  $ hg commit -m 'add noeol'

  $ python -c 'file("noeol", "wb").write("noeol\r\nnoeol\n")'

  $ python -c 'file("neweol", "wb").write("neweol\nneweol\r\n")'

  $ hg add neweol

  $ hg diff --git > noeol.diff

  $ hg revert --no-backup noeol neweol

  $ rm neweol

  $ hg --traceback --config patch.eol='auto' import -m noeol noeol.diff

  applying noeol.diff

  $ python -c 'print repr(file("noeol","rb").read())'

  'noeol\r\nnoeol\n'

  $ python -c 'print repr(file("neweol","rb").read())'

  'neweol\nneweol\r\n'

  $ hg st

Test --eol and binary patches

  $ python -c 'file("b", "wb").write("a\x00\nb\r\nd")'

  $ hg ci -Am addb

  adding b

  $ python -c 'file("b", "wb").write("a\x00\nc\r\nd")'

  $ hg diff --git > bin.diff

  $ hg revert --no-backup b

binary patch with --eol

  $ hg import --config patch.eol='CRLF' -m changeb bin.diff

  applying bin.diff

  $ python -c 'print repr(file("b","rb").read())'

  'a\x00\nc\r\nd'

  $ hg st

  $ cd ..