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/iso8859_4.py b/Lib/encodings/iso8859_4.py
index 29f9fd3..30d6ca6 100644
--- a/Lib/encodings/iso8859_4.py
+++ b/Lib/encodings/iso8859_4.py
@@ -1,9 +1,9 @@
-""" Python Character Mapping Codec generated from '8859-4.TXT'.
-
+""" Python Character Mapping Codec generated from '8859-4.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({
0x00a1: 0x0104, # LATIN CAPITAL LETTER A WITH OGONEK
0x00a2: 0x0138, # LATIN SMALL LETTER KRA
0x00a3: 0x0156, # LATIN CAPITAL LETTER R WITH CEDILLA
@@ -87,7 +87,7 @@
0x00fd: 0x0169, # LATIN SMALL LETTER U WITH TILDE
0x00fe: 0x016b, # LATIN SMALL LETTER U WITH MACRON
0x00ff: 0x02d9, # DOT ABOVE
-}
+})
### Encoding Map