Setting superseder to Issue839 and marking this one as resolved.

You probably want to take a look at Issue839 as well, which includes an
unofficial patch that solves the problem in a possibly safer way.

The "closed" error may be fixed by c67dfc4ecba6 in main and crew

thanks a lot for the http://selenic.com/hg/rev/fe41d9a186ab fix for Issue584, 
long filenames in windows. it works great!

would it be possible to somehow print something more useful to point a user to 
a solution of the problem? currently the output is a little frightening:

C:\Data\svn-doc>hg --version
Mercurial Distributed SCM (version d39af2eabb8c)

C:\Data\svn-doc>c:\apps\python25\Scripts\hg commit -m "initial"
trouble committing long-file-name!
transaction abort!
rollback completed
abort: No such file or directory: even-longer-filename-from-store-format
Exception exceptions.AttributeError: "'atomictempfile' object has no 
attribute 'closed'" in <bound method atomictempfile.__del__ of 
<mercurial.util.atomictempfile object at 0
x00E370F0>> ignored