Jeff King <peff@xxxxxxxx> writes: > However, each case arm of the switch falls through to the > one below it. This is pointless (we know that a command > starting with 'b' does not need to check any of the commands > in the 'c' block), and it makes gcc's -Wimplicit-fallthrough > complain. Wow, this is an embarassment. The code tries to cleverly optimize it, and then fails miserably. The updated one reads good. Thanks.