This patch changes the default behaviour of the builtin charmap
codec to not apply Latin-1 mappings for keys which are not found
in the mapping dictionaries, but instead treat them as undefined
mappings.
The patch was originally written by Martin v. Loewis with some
additional (cosmetic) changes and an updated test script
by Marc-Andre Lemburg.
The standard codecs were recreated from the most current files
available at the Unicode.org site using the Tools/scripts/gencodec.py
tool.
This patch closes the bugs #116285 and #119960.
diff --git a/Lib/encodings/cp500.py b/Lib/encodings/cp500.py
index 33d6fed..1c8fb57 100644
--- a/Lib/encodings/cp500.py
+++ b/Lib/encodings/cp500.py
@@ -1,9 +1,9 @@
-""" Python Character Mapping Codec generated from 'CP500.TXT'.
-
+""" Python Character Mapping Codec generated from 'CP500.TXT' with gencodec.py.
Written by Marc-Andre Lemburg (mal@lemburg.com).
(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
+(c) Copyright 2000 Guido van Rossum.
"""#"
@@ -35,8 +35,8 @@
### Decoding Map
-decoding_map = {
-
+decoding_map = codecs.make_identity_dict(range(256))
+decoding_map.update({
0x0004: 0x009c, # CONTROL
0x0005: 0x0009, # HORIZONTAL TABULATION
0x0006: 0x0086, # CONTROL
@@ -273,7 +273,7 @@
0x00fd: 0x00d9, # LATIN CAPITAL LETTER U WITH GRAVE
0x00fe: 0x00da, # LATIN CAPITAL LETTER U WITH ACUTE
0x00ff: 0x009f, # CONTROL
-}
+})
### Encoding Map