tests/svn/svndump-encoding.sh

pycompat: use os.fsencode() to re-encode sys.argv

Historically, the previous code made sense, as Py_EncodeLocale() and
fs.fsencode() could possibly use different encodings. However, this is not the
case anymore for Python 3.2, which uses the locale encoding as the filesystem
encoding (this is not true for later Python versions, but see below). See
https://vstinner.github.io/painful-history-python-filesystem-encoding.html for
a source and more background information.

Using os.fsencode() is safer, as the documentation for sys.argv says that it can
be used to get the original bytes. When doing further changes, the Python
developers will take care that this continues to work.

One concrete case where os.fsencode() is more correct is when enabling Python's
UTF-8 mode. Py_DecodeLocale() will use UTF-8 in this case. Our previous code
would have encoded it using the locale encoding (which might be different),
whereas os.fsencode() will encode it with UTF-8.

Since we don’t claim to support the UTF-8 mode, this is not really a bug and the
patch can go to the default branch. It might be a good idea to not commit this
to the stable branch, as it could in theory introduce regressions.

#!/bin/sh
# -*- coding: utf-8 -*-
#
# Use this script to generate encoding.svndump
#

mkdir temp
cd temp

mkdir project-orig
cd project-orig
mkdir trunk
mkdir branches
mkdir tags
cd ..

svnadmin create svn-repo
svnurl=file://`pwd`/svn-repo
svn import project-orig $svnurl -m "init projA"

svn co $svnurl project
cd project
echo e > trunk/é
mkdir trunk/à
echo d > trunk/à/é
svn add trunk/é trunk/à
svn ci -m hello

# Copy files and directories
svn mv trunk/é trunk/è
svn mv trunk/à trunk/ù
svn ci -m "copy files"

# Remove files
svn rm trunk/è
svn rm trunk/ù
svn ci -m 'remove files'

# Create branches with and from weird names
svn up
svn cp trunk branches/branché
echo a > branches/branché/a
svn ci -m 'branch to branché'
svn up
svn cp branches/branché branches/branchée
echo a >> branches/branché/a
svn ci -m 'branch to branchée'

# Create tag with weird name
svn up
svn cp trunk tags/branché
svn ci -m 'tag trunk'
svn cp branches/branchée tags/branchée
svn ci -m 'tag branché'
cd ..

svnadmin dump svn-repo > ../encoding.svndump