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The command used was:
svn merge -r21330:r21329 .

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r21330 | bugman | 2013-10-29 17:57:36 +0100 (Tue, 29 Oct 2013) | 6 lines
Changed paths:
M /trunk/user_functions/structure.py

Fix for a fatal bug in the rarely used structure.add_atom user function.

The position argument in the user function definitions was incorrectly defined causing the user
function to be non-functional.
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