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https://issues.apache.org/jira/browse/METRON-438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15510250#comment-15510250
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ASF GitHub Bot commented on METRON-438:
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Github user nickwallen commented on the issue:

    https://github.com/apache/incubator-metron/pull/265
  
    Love it.  
    
    One other thing I was noticing.  Not a deal breaker, but want to get your 
feedback on it.  If I auto-complete a function, it adds a space after the 
function name.  If I type "WEEK_OF_YE" then tab, it auto-completes to 
"WEEK_OF_YEAR " with a trailing space.  
    
    If I then immediately hit ENTER, Stellar executes it, interprets it as a 
variable name, sees no value for the variable and does nothing.  Would it be 
possible to auto-complete a function with a trailing '(' so that I am forced to 
provide arguments?  Or maybe there is a better way to handle this situation.


> Back the Stellar REPL with a readline implementation
> ----------------------------------------------------
>
>                 Key: METRON-438
>                 URL: https://issues.apache.org/jira/browse/METRON-438
>             Project: Metron
>          Issue Type: Improvement
>            Reporter: Casey Stella
>            Assignee: Casey Stella
>   Original Estimate: 2.5h
>  Remaining Estimate: 2.5h
>
> The REPL as it currently stands is great, but it could be closer in-line with 
> the more popular REPL's by being backed by a readline implementation.
> Specifically, we should:
> * add variable assignment
> * add the ability to do reverse searches in the history
> * add the ability to use the arrow keys to recover previous inputs
> * add the ability to adjust input via ~/.inputrc
> * add autocomplete for function names and variable names



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