+4  A: 

You can add a small negative space using \! between the punctuation mark and the footnote.

As Jouni commented, \! is a math mode command causing latex to switch into math mode. This can be prevented by using the amstex package.

jug  2009-09-26 14:49:48
This works, but makes everything after it italic. Probably because footnote is so weird. But the idea of removing a tiny bit of space workds: it turns out I can just use \hspace{-0.8mm}.
Paul Biggar  2009-09-26 15:18:45
Sorry, you're right. I had tried it on a footnote in math mode where everything worked fine. Looks like \! works only in math mode!
jug  2009-09-26 15:47:24
No, the reason \! makes things italic is that it is a math-mode command, and TeX thinks you forgot a $ and ever so helpfully inserts one for you. The very commonly used amsmath package redefines \! to work also in text mode.
Jouni K. Seppänen  2009-09-26 15:49:35
@Jouni: Thanks, that works.
Paul Biggar  2009-09-26 16:34:30
@jug: If you mention the amsmath thing from Jouni, I'll mark this correct. Thanks.
Paul Biggar  2009-09-29 11:32:02

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