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https://issues.apache.org/jira/browse/FREEMARKER-69?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16123223#comment-16123223
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Daniel Dekany commented on FREEMARKER-69:
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It's design decision in FreeMarker that user refined directives (including
macros) and user defined functions are just variables. They all use the same
namespace. Also, directives and functions are first class values, that is, you
can pass them around just like strings or numbers or anything else. So with
{{<#macro foo>}} you really just create a value of type macro, and then assign
it to variable {{foo}} (similarly as {{<#assign foo = ...>}}).
> Chinese：自定义Directive与Variable变量名称一致导致FTL解析BUG，English:A bug when The
> user-defined directive key same as Variable key
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: FREEMARKER-69
> URL: https://issues.apache.org/jira/browse/FREEMARKER-69
> Project: Apache Freemarker
> Issue Type: Bug
> Reporter: pengzhistar
> Priority: Minor
> Attachments: Freemarker.rar
>
>
> Exception info:
> For "@" callee: Expected a(n) user-defined directive, transform or macro, but
> this has evaluated to a sequence (wrapper: f.t.SimpleSequence):
> Advise:
> Chinese：将directive对象和临时变量对象分开存储
> English： Separately store directive objects and temporary variable objects
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