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From http://codespeak.net/pipermail/icalendar-dev/2010-April/000152.html:
Lines get folded in the middle of multi-octet sequences (checked out
code from svn today). Consider this case:
import icalendar
ical = icalendar.Calendar()
ical.add('summary', u'a' + u'ą'*100)
ical.as_string().decode('utf-8')
...
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 90-91:
invalid data
I have attached a diff of a simple one-line fix.
As I see in the code you actually try not to split a multi-octet
character but you don't recalculate the slice after finding the new
end position. Could you confirm this?
Submitted by Rimvydas Naktinis.
===================================================================
--- src/icalendar/parser.py (revision 73587)
+++ src/icalendar/parser.py (working copy)
@@ -456,6 +456,7 @@
else:
end -= 1
+ slice = self[start:end]
new_lines.append(slice)
if end == l_line:
# Done
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