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From "Byron Foster (JIRA)" <...@velocity.apache.org>
Subject [jira] Commented: (VELOCITY-680) RFC: New #local directive that behaves like #set but puts things into local context in macro rendering
Date Fri, 06 Feb 2009 04:45:59 GMT

    [ https://issues.apache.org/jira/browse/VELOCITY-680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12671003#action_12671003
] 

Byron Foster commented on VELOCITY-680:
---------------------------------------

Oops, hit save too soon...

The scope behavior now is such that local scope is only visible within the current frame.
 I think this more straight forward, and with better scope control the old way could possible
have some strange side effects.

> RFC: New #local directive that behaves like #set but puts things into local context in
macro rendering
> ------------------------------------------------------------------------------------------------------
>
>                 Key: VELOCITY-680
>                 URL: https://issues.apache.org/jira/browse/VELOCITY-680
>             Project: Velocity
>          Issue Type: New Feature
>    Affects Versions: 1.7
>            Reporter: Jarkko Viinamäki
>         Attachments: velocity-local-directive-1.1.patch, velocity-local-directive.patch
>
>
> It would be very useful to be able to set variables that are in local macro scope. That
is, they do not overwrite "global" variables and are thrown away after macro rendering. This
would allow people to build macro libraries that do not clash so easily with each other.
> There is some implementation of a "LocalDirective" in experimental/localdirective but
I didn't quite get it and it doesn't follow the same syntax as #set. I used a few minutes
to hack together this alternative implementation which behaves exactly like #set but it puts
things in local context only.
> There's only one test case since this is Request-for-Comments type of patch.

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