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The only purpose of CENV-TRIV-ANALYZE is to go through the code for a TRIVIAL cnode, looking for variables occurring in other than function position, in order to put appropriate VARIABLE-REFP properties. Notice that the types LAMBDA and LABELS do not occur in the EQCASE expression, as nodes of those types can never occur in trivial expressions.
CENV-CCOMBINATION-ANALYZE is a simple routine which analyzes CCOMBINATION cnodes; it is a separate routine only because it is used in more than one place in CENV-ANALYZE. It could have been made a local subroutine by using a LABELS in CENV-ANALYZE, but I elected not to do so for purely typographical reasons.
