Changing the location of where tempfile is created

   I don't know whether this is an artefact of svn itself, TortoiseSvn or a
mixture of the both; the error is being reported from svn's io.c.

   A colleague has an IT-locked-down PC where he can't write to the root of
C:\ or D:\. He just tried to do an update (in Tortoise) where there was a
revision conflict, and instead of a fix-it prompt, he got:

Couldn't do property merge
Unable to make name for D:\tempfile

   I eventually tried the update on the command line, and that then prompted
me with the usual conflict resolution (text) prompt. This implies the issue
is within Tortoise, but it is a SVN library routine that's giving the error.

   So my question is: is there an environment variable or something that
specifies where SVN creates a tempfile when there's no other dir. specified?

-- 
[neil_at_fnx ~]# rm -f .signature
[neil_at_fnx ~]# ls -l .signature
ls: .signature: No such file or directory
[neil_at_fnx ~]# exit