J,
Hello there!
I'm not aware of any inconsistencies of the type you report, and am doubtful
if they are real, since nothing has changed on the site in quite a while,
and people are usual quick to pick up these things.
Let's try and pin it down: as I see things 'a' heads the vocab.txt file and
output.file of 'english' (porter2), and the english stemmer stems 'a' to
'a'. None of the stemmers actually stem a non-null string to a null string.
What exactly are you getting here?
Martin
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