Fixed #10675 -- Added unicode paragraph and line-sep handling to escapejs.

There were a couple of line breaking Unicode characters (\u2028 and
\u2029) that cause Javascript errors, at least in Firefox, if not
escaped. So now we do so. Based on a patch from rleland.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10543 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/template/defaultfilters.py

@@ -76,7 +76,9 @@ _base_js_escapes = (
     ('&', r'\x26'),
     ('=', r'\x3D'),
     ('-', r'\x2D'),
-    (';', r'\x3B')
+    (';', r'\x3B'),
+    (u'\u2028', r'\u2028'),
+    (u'\u2029', r'\u2029')
 )
 
 # Escape every ASCII character with a value less than 32.

tests/regressiontests/defaultfilters/tests.py

@@ -83,6 +83,9 @@ u'and lots of whitespace: \\x0D\\x0A\\x09\\x0B\\x0C\\x08'
 >>> escapejs(ur'<script>and this</script>')
 u'\\x3Cscript\\x3Eand this\\x3C/script\\x3E'
 
+>>> escapejs(u'paragraph separator:\u2029and line separator:\u2028')
+u'paragraph separator:\\u2029and line separator:\\u2028'
+
 >>> fix_ampersands(u'Jack & Jill & Jeroboam')
 u'Jack &amp; Jill &amp; Jeroboam'