If CATCH-ALL is nil, no catch-all handling is performed, regardless of
catch-all marks in group parameters. Otherwise, if there is no
selected group whose SPLIT-REGEXP matches the empty string, nor is
If CATCH-ALL is nil, no catch-all handling is performed, regardless of
catch-all marks in group parameters. Otherwise, if there is no
selected group whose SPLIT-REGEXP matches the empty string, nor is