New submission from Serhiy Storchaka:
binhex.binhex() creates files with mixed line endings in Python 3. The header
line '(This file must be converted with BinHex 4.0)' is separated from the data
by LFs, but the data is split for lines by CRs.
>>> import binhex
>>> with open('inp', 'wb') as f: f.write(bytes(range(256)))
...
256
>>> binhex.binhex('inp', 'outp')
>>> for line in open('outp', 'rb').read().splitlines(True): print(repr(line))
...
b'(This file must be converted with BinHex 4.0)\r'
b'\r'
b':!fPZF!!rN!J!N!3"!*!&*VF!!3)$"!8\'"`J*#JX-$3i2%"%5%a39&KFB\'4SE("d\n'
b'H(b!K)L-N*5BR+#NU+b`Y,Lm`-6)c0$8f0cJj1MXm26ir3%d4&4NG)58T,6%e\n'
b'16e"48P0899CA@&PD@eaGAPpJB@*MC\'9QCfKTDQYXE@j[F(&bFh4eGRGiHATlI(e\n'
b'qIi#"JS1%KBD(L)Q+Lib0MSq3!*\'5Nj59PTHBQCUER*fHRk#KSU1NTDDRU+QUUkb\n'
b'YVUq`XE+cY,@fYlLjZVZm[Ekr`-(#`m6&aXI)bFV,c-h1cp$4dY28eGEAf0RDfpc\n'
b'GhYrJiH,Mj1AQjqMTkZ[XlHl[m2(bmr6ep[IiqIVlr2hqrhj9!!!:\n'
In Python 2 the output file was file object usually opened in text mode.
Newline characters were translated to platform-depending line endings: CRLF on
Windows, LF on classic Mac OS. In Python 2 the output file is binary stream
that doesn't do any newline translations.
The last related commit is 34a042d301d6ab88645046a6dfa6c38265ca4b39 with
Guido's message "This is the last time I fix binhex. If it breaks again it
goes in the dustbin."
----------
components: macOS
messages: 287849
nosy: gvanrossum, ned.deily, ronaldoussoren, serhiy.storchaka
priority: normal
severity: normal
status: open
title: binhex() creates files with mixed line endings
type: behavior
versions: Python 3.5, Python 3.6, Python 3.7
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue29566>
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