Not sure is this has been reported before:
sequencer.c:633:14: warning: comparison of constant 2 with expression of type 'const enum todo_command' is always true [-Wtautological-constant-out-of-range-compare]
if (command < ARRAY_SIZE(todo_command_strings))
~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
53f8024e (Johannes Schindelin 2016-10-10 19:25:07 +0200 633) if (command < ARRAY_SIZE(todo_command_strings))