Short list of Jetty modules

[sbordet]

Jetty version
10.0.x

Description
Would be great if users could explore what modules are available in a fresh install of Jetty:

java -jar $JETTY_HOME/start.jar --show-modules

where --show-modules produces a shorter output rather than the current 799 😮 lines of output, where the modules available are completely lost in the amount of other information.

The output of --show-modules would be something like:

Module: alpn 
Module: annotations 
Module: apache-jsp 
Module: apache-jstl 
Module: bytebufferpool 
Module: client 
Module: decorate 
Module: deploy 
Module: fcgi 
...

Maybe with a short description.

[gregw]

We already have --list-modules, which has descriptions, dependencies etc plus a filtering mechanism

[gregw]

i wouldn't object to making "show" a synonym for "list" in all our options.... plus "--add" should be the same as "--add-to-start"

[sbordet]

@gregw --list-modules produces 800 lines of output.

[janbartel]

I find it confusing to have both --show-xxx and --list-xxx. Also to me --show-xxx implies more detailed info than --list-xxx. How about we keep just --list-modules and either add --verbose or alternatively --quiet to change the amount of info output??

[gregw]

Then let's improve the format of --list-modules, with the default being more compact, perhaps leaving out the dependencies.
Maybe we then have a --show-module=name,name,.... that shows the full details of the given modules?

[sbordet]

Any solution would work for me.

My point is that a user would probably like to see the list of available modules to glance interesting ones:

oh, hey, there is a statistics module, and look, a rewrite module too!

[gregw]

OK - I'll do this one.

[gregw]

@WalkerWatch #5257 included an update to the module descriptions... but can you review them in a new PR to improve the voice of them.