I'm happy to see that more mathematical operators that are already present in Sans are being added to Sans Mono as well. In Plans section on the Wiki (http://dejavu-fonts.org/wiki/Plans) there is a plan of adding more of those (Mathematical Operators: U+2238-22FF, U+2A00-2AFF (Rémy Oudompheng)). However the binary math operator for set difference (U+2216 ∖) is not in the range. I'd like to have this character available in Sans Mono.
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