From the original proposal of @Seldaek --verbose=1/2/3 (with --verbose being equivalent to --verbose=1) and -v/-vv/-vvv I don't know how we can do the shorthand versions, the -vv and -vvv to be more accurate as the current Console component doesn't support multiple aliases.

@fabpot do we want to support multiple aliases? If so, I can do the patch as well.

If the PR is ok, I'll create the doc PR for this to be mergeable.

@dlsniper Support for multiple aliases as you call them should be done in another PR.

The PR is not mergeable yet IMO, it adds weird bugs. I'm investigating.

Thanks for feedback, I'm travelling right now, I'll fix the remaining issues tonight.

Sent a PR (dlsniper#2) with some fixes, but that's unfortunately not the end of it. Since --verbose now has an optional value, doing things like: composer show --verbose symfony/symfony fails, because it takes symfony/symfony as the value to --verbose, and not as an InputArgument as it was before. Similarly doing composer --verbose 2 show symfony/symfony fails for example, because the parser takes the first argument as the command name, in this case it's 2 so it fails hard.

I see a few ways of dealing with this:

• revert the --verbose option to be VALUE_NONE. It still works as expected since we inspect the input tokens directly with hasParameterOption, and it fixes the problems. However that means you can't do --verbose 3 anymore, you need the =.
• make some ugly hack in the input parsing to ignore values following --verbose if they aren't 1/2/3
• add some new thing in the InputOption class to specify accepted values, so that non accepted ones are ignored if a default value is provided. It's equally hackish IMO but makes it look more legit.

I think I would prefer the first approach, because it's easy, and introduces a minor inconsistency for the verbose flag but that's hopefully ok.

@Seldaek I've fixed the remaining bugs and I've used the first option. It's not really pretty but it works so it should be fine from my pov. Can you check if it works for you now?

I've also changed the text to the one suggested by @fabpot

If everything looks good, I'll do the doc PR asap.

I'll start with the PR for multiple shortcuts/aliases if we want to have support for that as well, let me know about it.

Answered inline in new commits regarding the code.

I'll start with the PR for multiple shortcuts/aliases if we want to have
support for that as well, let me know about it.

I don't think multiple aliases really makes sense in most cases. Might
be good to have it for completeness, but usually you don't need to add
more mess to the cli args ;) And in this case it's not really aliases,
because -vv is different from -v.

What the status of this PR?

@fabpot sorry for not responding earlier. I don't have the time to make this feature work in time for 2.3. If someone else wants to take over it, please do so. Feel free to close this when a new PR appears.

@dlsniper I'll try to take over because I really need this.

Closing in favor of #7841