changeset:   95637:54df02192bfc
branch:      3.4
parent:      95633:717d87c13f0d
user:        Andrew Kuchling <amk@amk.ca>
date:        Mon Apr 13 10:38:56 2015 -0400
files:       Lib/gettext.py Lib/test/test_gettext.py Misc/NEWS
description:
#17898: reset k and v so that the loop doesn't use an old value


diff -r 717d87c13f0d -r 54df02192bfc Lib/gettext.py
--- a/Lib/gettext.py	Mon Apr 13 09:58:36 2015 -0400
+++ b/Lib/gettext.py	Mon Apr 13 10:38:56 2015 -0400
@@ -262,11 +262,12 @@
             # See if we're looking at GNU .mo conventions for metadata
             if mlen == 0:
                 # Catalog description
-                lastk = k = None
+                lastk = None
                 for b_item in tmsg.split('\n'.encode("ascii")):
                     item = b_item.decode().strip()
                     if not item:
                         continue
+                    k = v = None
                     if ':' in item:
                         k, v = item.split(':', 1)
                         k = k.strip().lower()
diff -r 717d87c13f0d -r 54df02192bfc Lib/test/test_gettext.py
--- a/Lib/test/test_gettext.py	Mon Apr 13 09:58:36 2015 -0400
+++ b/Lib/test/test_gettext.py	Mon Apr 13 10:38:56 2015 -0400
@@ -79,6 +79,12 @@
         del self.env
         support.rmtree(os.path.split(LOCALEDIR)[0])
 
+GNU_MO_DATA_ISSUE_17898 = b'''\
+3hIElQAAAAABAAAAHAAAACQAAAAAAAAAAAAAAAAAAAAsAAAAggAAAC0AAAAAUGx1cmFsLUZvcm1z
+OiBucGx1cmFscz0yOyBwbHVyYWw9KG4gIT0gMSk7CiMtIy0jLSMtIyAgbWVzc2FnZXMucG8gKEVk
+WCBTdHVkaW8pICAjLSMtIy0jLSMKQ29udGVudC1UeXBlOiB0ZXh0L3BsYWluOyBjaGFyc2V0PVVU
+Ri04CgA=
+'''
 
 class GettextTestCase1(GettextBaseTest):
     def setUp(self):
@@ -290,6 +296,14 @@
         # Test for a dangerous expression
         raises(ValueError, gettext.c2py, "os.chmod('/etc/passwd',0777)")
 
+class GNUTranslationParsingTest(GettextBaseTest):
+    def test_plural_form_error_issue17898(self):
+        with open(MOFILE, 'wb') as fp:
+            fp.write(base64.decodebytes(GNU_MO_DATA_ISSUE_17898))
+        with open(MOFILE, 'rb') as fp:
+            # If this runs cleanly, the bug is fixed.
+            t = gettext.GNUTranslations(fp)
+
 
 class UnicodeTranslationsTest(GettextBaseTest):
     def setUp(self):
@@ -465,3 +479,16 @@
 "Content-Transfer-Encoding: quoted-printable\n"
 "Generated-By: pygettext.py 1.3\n"
 '''
+
+#
+# messages.po, used for bug 17898
+#
+
+'''
+# test file for http://bugs.python.org/issue17898
+msgid ""
+msgstr ""
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"#-#-#-#-#  messages.po (EdX Studio)  #-#-#-#-#\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+'''
diff -r 717d87c13f0d -r 54df02192bfc Misc/NEWS
--- a/Misc/NEWS	Mon Apr 13 09:58:36 2015 -0400
+++ b/Misc/NEWS	Mon Apr 13 10:38:56 2015 -0400
@@ -29,6 +29,8 @@
 Library
 -------
 
+- Issue #17898: Fix exception in gettext.py when parsing certain plural forms.
+
 - Issue #22982: Improve BOM handling when seeking to multiple positions of
   a writable text file.