timeclock-seconds-to-string
timeclock-seconds-to-string is a compiled Lisp function in `timeclock.el
'.
(timeclock-seconds-to-string SECONDS &optional SHOW-SECONDS REVERSE-LEADER)
Convert SECONDS into a compact time string.
If SHOW-SECONDS is non-nil, make the resolution of the return string
include the second count. If REVERSE-LEADER is non-nil, it means to
output a "+" if the time value is negative, rather than a "-".
This is used when negative time values have an inverted meaning (such
as with time remaining, where negative time really means overtime).