This is a very old bug but I can see how even in impish the man page docs could be a bit confusing:
-t <seconds>, --timeout <seconds>
Set the global minimum timeout, in seconds, until directories are unmounted. The default is
10 minutes. Setting the timeout to zero disables umounts completely. The internal program default is 10 minutes, but the default installed configuration overrides this and sets the timeout to 5 minutes to be consistent with earlier autofs releases.
The issue being that what's (correctly) described in the man page isn't what's implied by the option name '--timeout'. However, given how long that option has been available in practice, renaming the option is probably not feasible at this point. And, if it should be renamed, that is better discussed and performed upstream and not diverge from standard practice.
This is a very old bug but I can see how even in impish the man page docs could be a bit confusing:
-t <seconds>, --timeout <seconds>
default is 10 minutes, but the default installed configuration overrides this and sets the
timeout to 5 minutes to be consistent with earlier autofs releases.
Set the global minimum timeout, in seconds, until directories are unmounted. The default is
10 minutes. Setting the timeout to zero disables umounts completely. The internal program
The issue being that what's (correctly) described in the man page isn't what's implied by the option name '--timeout'. However, given how long that option has been available in practice, renaming the option is probably not feasible at this point. And, if it should be renamed, that is better discussed and performed upstream and not diverge from standard practice.