[jboss-jira] [JBoss JIRA] (AS7-6004) Inconsistent tab completion behaviour between commands and arguments

[Alexey Loubyansky (JIRA)]

    [ https://issues.jboss.org/browse/AS7-6004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12752335#comment-12752335 ] 

Alexey Loubyansky commented on AS7-6004:
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The problem here is that it's not always good and expected to have a whitespace added after the single candidate.
Generally speaking, whitespace is only a specific example of a separator. There might be other separators expected, especially talking about the operation request format with /, =, :, etc as separators. We discussed this we Stale at the time and I think there is some API in Aesh supporting alternative separators.

But anyway, just adding a whitespace after a single choice as a rule will introduce other problems.
                
> Inconsistent tab completion behaviour between commands and arguments
> --------------------------------------------------------------------
>
>                 Key: AS7-6004
>                 URL: https://issues.jboss.org/browse/AS7-6004
>             Project: Application Server 7
>          Issue Type: Bug
>          Components: CLI
>            Reporter: Jeff Mesnil
>            Assignee: Jeff Mesnil
>            Priority: Minor
>
> When tab is used for completion, the behavior changes when there is only 1 remaining candidate.
> For commands, when the completion leads to a single candidate, a whitespace is appended and we can proceed to the arguments
> For arguments using a TabCompleter, when the completion leads to a single candidate, no whitespace is appended and we have to type it to be able to proceed to the next argument
>  
> Example:
> * deployment-over<TAB>
> => will complete to deployment-overlay<WHITESPACE><CURSOR> (a whitespace is appended to the single candidate)
> * deployment-overlay a<TAB>
> => will complete to deployment-overlay add<CURSOR> (no whitespace appended even though add is the only candidate matched) 

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