Rule	What it catches
blank-line-before-control-flow	An if/for/while crowded against the statement above
blank-line-before-return	A return buried against the code above it
group-separation	A long run of statements with no blank lines between groups
excessive-indentation	Lines indented past the readable limit
deep-nesting	Control flow nested past the configured depth
long-parameter-list	An argument list that should be split across lines
overlong-line	A line wider than the readable limit
oversized-unit	A function too long to hold in your head
oversized-file	A file too large to navigate
mixed-indentation	A file that indents with both tabs and spaces
comment-required-on-complex-unit	A complex function with no explanation
comment-explains-why	Credit for a comment that explains reasoning
comment-narrates-code	A comment that restates what the code already says
excessive-comments	More commentary than the code can carry
thin-documentation	A doc block that lists structure without explaining purpose