[Open Babel] Combine two SMARTS patterns

[Andreas M. <an...@ma...>]

I was wondering if there is a possibility to combine two distinct smarts 
patterns. Of course, there is the comma OR operator (s1,s2), but I was 
thinking of a more sophisticated combination, where equal parts of s1 
and s2 are "mapped onto each other" in a way such that merely the 
exclusive parts of s1 and s2 are connected via OR to the common core 
structure, where possible? Perhaps s1 and s2 can be matched to a common 
molecule and the result be expressed as a new smarts s12?
Thanks, Andreas

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