Github user Leemoonsoo commented on the issue: https://github.com/apache/zeppelin/pull/1594 Thanks @1ambda for the contribution. I have compared output from markdown4j and pegdown and found some differences. font difference ![image](https://cloud.githubusercontent.com/assets/1540981/20041478/77b2d5be-a41e-11e6-8c62-e69308dcc87f.png) emphasis inside of `()` ![image](https://cloud.githubusercontent.com/assets/1540981/20041487/9730d67a-a41e-11e6-93eb-e103e767c08c.png) There could be more unknown differences. That means, existing notebook might render differently with pegdown and that could be unexpected result in some cases. So how about keep markdown4j and make pegdown default parser? That at least give user option to configure markdown interpreter with old markdown4j parser when they don't want to make change on existing notebook.
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