3.12.2.5.1.8. sphinx.ext.mathbase.math.coerce_append_attr_list

math.coerce_append_attr_list(attr, value)

First, convert both self[attr] and value to a non-string sequence type; if either is not already a sequence, convert it to a list of one element. Then call append_attr_list.

NOTE: self[attr] and value both must not be None.