RFR: 1275: The unknown sub-command will ouput the unexpected message

[Guoxiong Li]

Hi all,

When using the unknown command, the client will output the unexpected message. For example:


$ git-pr lis 123

error: unexpected input: 123
usage: git-pr [options] [<COMMAND>]
-h, --help      Show help
--verbose   Turn on verbose output
--debug     Turn on debugging output
--version   Print the version of this tool


When the client can't identify the sub-command `git-pr lis`, it will execute the default command `git-pr help` and will pass `lis 123` as the argument to the `git-pr help` command. And the `git-pr help` can resolve only one argument, which is `lis` in this example, so it would output `error: unexpected input: 123`.

This patch will output more information to the user:


$ git-pr lis 123

Can't find the sub-command 'lis', the default sub-command 'help' will be executed.
The arguments [lis, 123] will be passed to the default sub-command.

error: unexpected input: 123
usage: git-pr [options] [<COMMAND>]
-h, --help      Show help
--verbose   Turn on verbose output
--debug     Turn on debugging output
--version   Print the version of this tool


The added information can let the user know why the following output is shown.

Thanks for taking the time to review.

Best Regards,
-- Guoxiong

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Commit messages:
- 1275: The unknown sub-command will ouput the unexpected message

Changes: https://git.openjdk.java.net/skara/pull/1257/files
Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=1257&range=00
Issue: https://bugs.openjdk.java.net/browse/SKARA-1275
Stats: 5 lines in 1 file changed: 4 ins; 0 del; 1 mod
Patch: https://git.openjdk.java.net/skara/pull/1257.diff
Fetch: git fetch https://git.openjdk.java.net/skara pull/1257/head:pull/1257

PR: https://git.openjdk.java.net/skara/pull/1257