[docs] [issue3874] documentation bug: HTMLParser needs to document unknown_decl

[Georg Brandl]

Georg Brandl <georg at python.org> added the comment:

Applied with some tweaks in r83223.  Thanks Jeff and Terry!

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nosy: +georg.brandl
resolution:  -> fixed
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3874>
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