Daniel Dekany resolved FREEMARKER-86.
       Resolution: Implemented
    Fix Version/s: 2.3.28-incubating

This is now implemented in the Git repo. It's {{listableValue?min}} and 
{{listableValue?max}}, so the basic use case in the subject looks like {{[x, 
y]?min}} and {{[x, y]?max}}. (Of course as it works with any listable value, 
there can be more the 2 values involved, or the whole listable value can come 
from a variable, etc.)

> min(x,y) and max(x,y)
> ---------------------
>                 Key: FREEMARKER-86
>                 URL: https://issues.apache.org/jira/browse/FREEMARKER-86
>             Project: Apache Freemarker
>          Issue Type: Improvement
>          Components: engine
>            Reporter: Vojtech Knyttl
>            Priority: Major
>             Fix For: 2.3.28-incubating
> It would be great to have these two builtins for numbers. At the moment, I 
> have to create functions like:
> {code}
> <#function max(a, b)>
>      <#return (a > b)?then(a, b)>
> </#function>
> {code}

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