[jira] Commented: (VELOCITY-623) Modify escape behavior in strict mode

["Byron Foster (JIRA)" <de...@velocity.apache.org>]

    [ https://issues.apache.org/jira/browse/VELOCITY-623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12648667#action_12648667 ] 

Byron Foster commented on VELOCITY-623:
---------------------------------------

The parser needs to be changed for this, and most of the work involved I believe would be to maintain backward compatibility.  I would rather make the change when backward compatibility is not an issue.

> Modify escape behavior in strict mode
> -------------------------------------
>
>                 Key: VELOCITY-623
>                 URL: https://issues.apache.org/jira/browse/VELOCITY-623
>             Project: Velocity
>          Issue Type: New Feature
>          Components: Engine
>    Affects Versions: 1.6
>            Reporter: Byron Foster
>             Fix For: 1.7
>
>         Attachments: StrictEscapeWithProperty.patch
>
>
> provides another property 'runtime.references.strict.escape' that when true modifies the behavior of escaping a reference when in strict mode, see discussion VELOCITY-618.  The behavior is a as follows:
> $abc = <exception>    -  If $abc is not defined
> \$abc = $abc 
> \\$abc = <exception>  - If $abc is  not defined
> \\\$abc = \$abc
> The backslash in front of a reference always prevents that reference from being evaluated, and the backslash is removed. This is true wether a reference is in the context or not.

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