RegExp Variable Replacement Not Working on Filters

[vcshih]

I am working using version 1.0.11 of dgraph and interacting with the graph using the Ratel interface.

I have a query that I have constructed as:

 query all($regexp_query: string = "/(?i)sal/" ) {
  objects (func: has(_predicate_))
  @filter( regexp(name, $regexp_query) )
  {
		uid
  }
}

with the intention of filtering using regular expression. This doesn't work, and it gives an error message of ": Function 'regexp' requires 2 arguments, but got 1 ([/(?i)sal/])"

however:

query all($regexp_query: string = "/(?i)sal/" ) {
  objects (func: regexp(name, $regexp_query))
  {
		uid
  }
}

Does work.

I noticed that this is similar to the issue raised in Issue #2333. Can this fix also be applied to the filter function on a query?