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Subject: [OASIS Issue Tracker] Commented: (OFFICE-2164) Add EASTERSUNDAYfunction

    [ http://tools.oasis-open.org/issues/browse/OFFICE-2164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=24554#action_24554 ] 

Robert Weir  commented on OFFICE-2164:

Andreas, are there any better alternatives?  

It seems we either have a proliferation of function names, one for each holiday, or we have a parametrized HOLIDAY() function. 

For parameters we either have strings (like we do for CONVERT) or integers (like we do with date count basis values).  The former is self-documenting, but harder to localize.  The later doesn't require translation (or is done entirely in user documentation) but is harder to read, and is more error prone, since a typo tends to silently return a different date for the wrong holiday rather than an error.

There is also the extensibility issue, for vendor/user extensions.  With strings you need a namespace mechanism.  For integers you do something like say, "All values above 99 are reserved for implementation-defined extensions".  But then you still have vendor-to-vendor collision possibilities.

So you can see why I like the string parameter approach.

I'd like to understand the translation issue more.  What do you do today for CELL()?  If you allow translated

Clearly the initial OpenFormula uses a variety of approaches, due to its mapping of legacy functions.  But we should probably try to encourage a single design approach going forward, when solving similar kinds of problems.  HOLIDAY() is just one example of a class of functions.

> Add EASTERSUNDAY function
> -------------------------
>                 Key: OFFICE-2164
>                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-2164
>             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
>          Issue Type: New Feature
>          Components: OpenFormula
>            Reporter: Eike Rathke
>            Assignee: Robert Weir 
>            Priority: Minor
>             Fix For: ODF 1.3 CSD 01
> OpenOffice.org Calc knows the EASTERSUNDAY function, this is a proposal to include that with OpenFormula.

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