fail to find template function when extends in 3.1.29

[hkuclion]

what I did

testExtendsFunctionBase.html

{function name=hkuc}{/function}
{block name=layout}{/block}

testExtendsFunction.html

{extends file="./testExtendsFunctionBase.html"}

{block name=layout}
{function name=lion}hkuclion{/function}

{call lion}
{/block}

what I expected

hkuclion

what I got

Fatal error: Uncaught --> Smarty: Unable to find template function 'lion' <-- thrown in \Smarty\smarty-3.1.29\libs\sysplugins\smarty_internal_runtime_tplfunction.php on line 45

further test

It's OK when use
{include file="./testExtendsFunctionBase.html"}
or remove
{function name=hkuc}{/function}
or use Smarty version below 3.1.29 (ie 3.1.27)

[uwetews]

This is fixed now in the master branch