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https://issues.apache.org/jira/browse/FREEMARKER-20?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15248528#comment-15248528
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Daniel Dekany commented on FREEMARKER-20:
-----------------------------------------
This is one of the cases which won't give the intuitive result without dynamic
(run time) white-space handling, however, the architecture of FreeMarker 2
architecture can't implement that, not in the general cases anyway. It's
considered for FreeMarker 3, because, I believe, it requires breaking backward
compatibility (as we can't use simple {{Writer}}-s anymore, except for the
final outputting stage).
BTW, the
{code}
${" "}
{code}
is not needed, you can just include those spaces literally. But the 3 line
variation is nicer anyway.
> Some single-line solution to avoid empty lines
> -----------------------------------------------
>
> Key: FREEMARKER-20
> URL: https://issues.apache.org/jira/browse/FREEMARKER-20
> Project: Apache Freemarker
> Issue Type: New Feature
> Components: engine
> Affects Versions: 2.3.23
> Reporter: Ondra Žižka
>
> I'd like to be able to have the NEW LINE generated conditionally, with 1 line
> of template source code.
> I haven't found a way.
> {code}
> <#if
> dep.classifier??><classifier>${dep.classifier}</classifier></#if>
> {code}
> This generates the indent spaces and the newline, no matter what.
> {{#t}} and {{#rt}} and {{#lt}} apply at compile time, so they don't care
> about the condition. So they strip even if the content is there, which I
> don't want.
> I could do this:
> {code}
> <#if dep.classifier??>${"
> "}<classifier>${dep.classifier}</classifier>${"\n"}</#if><#t>
> {code}
> So that's the request. It can also be anything what helps me achieve that.
> Until then, I have to do:
> {code}
> <#if dep.classifier??>
> <classifier>${dep.classifier}</classifier>
> </#if>
> {code}
> Which I don't like because it makes the templates way longer.
> Or
> {code}
> <#if dep.classifier??><classifier>${dep.classifier}</classifier>
> </#if><#if
> dep.classifier??><classifier>${dep.classifier}</classifier>
> </#if>
> ...
> {code}
> Which I don't like because it's messy.
> Or
> {code}
> <#if dep.classifier??>${"
> "}<classifier>${dep.classifier}</classifier>${"\n"}</#if><#t>
> {code}
> Which I don't like because it adds superfluous pieces to the template.
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