seems a problem with the default regex checking for args.... Let's wait for Jonathan
>>> import re
>>> mymatch = re.compile(r'([\w@ -]+[=.]?)*$')
>>> mymatch.match('a')
<_sre.SRE_Match object at 0x02A61020>
>>> mymatch.match('Abbbbbbbb Lccc - Pddddddd GA Deeeeee (ffff ffff A).pdf')
endless loop of backtracing regex
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