gistfile1.txt

Imo it's not possible to use tagfiles atm. Here is my workaround:
- Use a tld in current portlet. I stole the tld from a Liferay jira ticket. Had some really strange problems using my own .tld file.

/META-INF/resource/test.tld

[code]
<?xml version="1.0"?>
<!-- This does not work if file name or uri is changed??????????? -->
<taglib
	version="2.1"
	xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-jsptaglibrary_2_1.xsd"
>
	<tlib-version>1.0</tlib-version>
	<short-name>example</short-name>
	<uri>http://liferay.com/tld/example</uri>
	<tag-file>
		<name>accordion-item</name>
		<path>/META-INF/tags/accordion-item.tag</path>
	</tag-file>
</taglib>
[/code]

In jsp:
[code]<%@ taglib prefix="custom" uri="http://liferay.com/tld/example" %>[/code]

For me changing tld filename from test.tld breaks the jsp (????????) also changing tld uri will add the wrong osgi require capabality into bnd so not changing these work. Don't have time to investigate this so whatever.

Also there are crazy bugs in using the custom tags:
- Using jstl tags in custom tags break randomly the tag. For example in one tag c:if is OK but c:forEach breaks. I suspect this has something to do with tags that use tag body. Same goes for your custom tags. 
- Not sure if this is a bug but referring to tag attributes with ${attr} does not work, i'm using <%= attr %>. At least some sources indicate ${attr} should work.