[ https://issues.oasis-open.org/browse/ODATA-848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=60674#comment-60674 ]
Steven Legg commented on ODATA-848:
-----------------------------------
The square brackets indicate optionality, so it is a choice between empty or a list of one or more parameters.
> ABNF construction rules don't permit empty functionParameters
> -------------------------------------------------------------
>
> Key: ODATA-848
> URL: https://issues.oasis-open.org/browse/ODATA-848
> Project: OASIS Open Data Protocol (OData) TC
> Issue Type: Bug
> Components: OData ABNF Construction Rules
> Affects Versions: V4.0_ERRATA03
> Reporter: Evan Ireland
>
> With this definition:
> functionParameters = OPEN [ functionParameter *( COMMA functionParameter ) ] CLOSE
> Unfortunately, this definition prohibits an empty parameter list.
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