report("single-letter name '$2'") if (m/(^|.*\W)([IO])(\W.*|$)/); # single-letter name 'I' or 'O' # maybe re-add 'l'?
# constant on LHS of comparison or assignment, e.g., NULL != x or 'a' < c, but not a + 1 == b
report("constant on LHS of '$3'")
report("single-letter name '$2'") if (m/(^|.*\W)([IO])(\W.*|$)/); # single-letter name 'I' or 'O' # maybe re-add 'l'?
# constant on LHS of comparison or assignment, e.g., NULL != x or 'a' < c, but not a + 1 == b
report("constant on LHS of '$3'")