[tahoe-lafs-trac-stream] [Tahoe-LAFS] #4171: `--version` not allowed on subcommands

[Tahoe-LAFS]

#4171: `--version` not allowed on subcommands
---------------------------+---------------------------
 Reporter:  hacklschorsch  |          Owner:
     Type:  defect         |         Status:  new
 Priority:  minor          |      Milestone:  undecided
Component:  documentation  |        Version:  n/a
 Keywords:                 |  Launchpad Bug:
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 `--help` is supported in `tahoe` subcommands to retrieve more detail, like
 so::

 `tahoe run --help`

 This prints a couple of available subcommands and command-options.
 One of them is::

 `--version`

 But executing `tahoe run --version` results in `tahoe` printing an error
 message::

 `tahoe:  --version not allowed on subcommands`

 ----

 The online help shouldn't list commands or options that aren't allowed.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/4171>
Tahoe-LAFS <https://Tahoe-LAFS.org>
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