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https://issues.apache.org/struts/browse/STR-3088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_42012
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Paul Benedict commented on STR-3088:
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Henri, want to try fixing this? A series of blanks is not input. If there
needed to be a compromise, come up with an "empty" token (ala JSTL) which
considers both null and empty strings: *this* == empty. However, I think this
is totally unnecessary because validwhen "null" already represents a non-null 0
length string. It seems obvious to me to expand it to multiple spaces.
> about blank value of validator required/validwhen
> -------------------------------------------------
>
> Key: STR-3088
> URL: https://issues.apache.org/struts/browse/STR-3088
> Project: Struts 1
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.3.8
> Reporter: Masakazu Ikezawa
>
> Hello,
> As for validator required/requiredif , the continuous space string (ex. "
> ") is jugded blank field.
> But 'null' of validwhen shows only null or length 0 String .
> For ex,'*this* == null' is not hit the continuous space string (ex. " ").
> I think it should be same behavior because 'Validator Guide' described as
> follows:
> > requiredif - field dependant validator
> >Deprecated, use validwhen.
> Now, requiredif cannot be replaced validwhen.
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