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From Ondra Žižka (JIRA) <j...@apache.org>
Subject [jira] [Updated] (FREEMARKER-20) Some single-line solution to avoid empty lines
Date Tue, 19 Apr 2016 19:13:25 GMT

     [ https://issues.apache.org/jira/browse/FREEMARKER-20?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ondra Žižka updated FREEMARKER-20:
----------------------------------
    Description: 
I'd like to be able to generate a line conditionally, with 1 line of template source code.
{code}
            <#if dep.classifier??><classifier>${dep.classifier}</classifier></#if>
{code}

I haven't found a way. {{#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><#br></#if><#rt>
{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.

  was:
I'd like to be able to generate a line conditionally, with 1 line of template source code.
{code}
            <#if dep.classifier??><classifier>${dep.classifier}</classifier></#if>
{code}

I haven't found a way. {{#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><#br></#if><#rt>
{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.


> 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: Bug
>          Components: engine
>    Affects Versions: 2.3.23
>            Reporter: Ondra Žižka
>
> I'd like to be able to generate a line conditionally, with 1 line of template source
code.
> {code}
>             <#if dep.classifier??><classifier>${dep.classifier}</classifier></#if>
> {code}
> I haven't found a way. {{#t}} and {{#rt}} and {{#lt}} apply at compile time, so they
don't care about the condition. So they strip even if the content is there, which I don't
want.
> I could do this:
> {code}
>             <#if dep.classifier??><classifier>${dep.classifier}</classifier><#br></#if><#rt>
> {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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