Github user Leemoonsoo commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/713#issuecomment-184112715
Right, multi-selection using string substitution can be complex,
considering target language syntax.
How about just concat selections and let user take care target language
syntax?
Let's say syntax is
`${mycheck:checkbox=default1|default2,value1(label1)|value2(label2)|value3(label3)}`
And if target language is SQL, filtering can be written like
```
select * from table where 1=1 ${color:checkbox=or color=yellow,or
color=yellow(yellow)|or color=red(red)}
```
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