# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 1520678949 -32400
# Node ID c268ba15deb351525b63d9c3438c0013ffc24d6c
# Parent  472c68cda3f8240c51c9808df55b9a3435b353f5
py3: open patch file in binary mode and convert eol manually

Here we don't introduce a reader wrapper since it wouldn't be easy to make
read(n) handle partial data and length correctly.

diff -r 472c68cda3f8 -r c268ba15deb3 mercurial/patch.py
--- a/mercurial/patch.py	Tue Mar 06 07:45:57 2018 -0600
+++ b/mercurial/patch.py	Sat Mar 10 19:49:09 2018 +0900
@@ -1120,9 +1120,10 @@
                         ui.warn(_("editor exited with exit code %d\n") % ret)
                         continue
                     # Remove comment lines
-                    patchfp = open(patchfn)
+                    patchfp = open(patchfn, r'rb')
                     ncpatchfp = stringio()
                     for line in util.iterfile(patchfp):
+                        line = util.fromnativeeol(line)
                         if not line.startswith('#'):
                             ncpatchfp.write(line)
                     patchfp.close()