bpo-34421: Improve distutils logging for non-ASCII strings. (GH-9126)

Use "backslashreplace" instead of "unicode-escape".  It is not
implementation depended and escapes only non-encodable characters.

Also simplify the code.

1 files changed, 3 insertions, 4 deletions

diff --git a/Lib/distutils/log.py b/Lib/distutils/log.py
index 3a6602bc8b..8ef6b28ea2 100644
--- a/Lib/distutils/log.py
+++ b/Lib/distutils/log.py
@@ -27,14 +27,13 @@ class Log:
                 stream = sys.stderr
             else:
                 stream = sys.stdout
-            if stream.errors == 'strict':
+            try:
+                stream.write('%s\n' % msg)
+            except UnicodeEncodeError:
                 # emulate backslashreplace error handler
                 encoding = stream.encoding
                 msg = msg.encode(encoding, "backslashreplace").decode(encoding)
-            try:
                 stream.write('%s\n' % msg)
-            except UnicodeEncodeError:
-                stream.write('%s\n' % msg.encode('unicode-escape').decode('ascii'))
             stream.flush()
 
     def log(self, level, msg, *args):