Github user sanjaydasgupta commented on the issue: https://github.com/apache/zeppelin/pull/2502 Hello @felixcheung @Tagar @zjffdu, this is for any further comments and suggestions. Here are the features implemented: 1. - The substitution pattern is `{ ... }` as suggested for uniformity with Jupyter 2. - The substitution pattern can be escaped by using `{{ ... }}`, and such patterns are translated into `{ ... }` while retaining the original contents of `{{ ... }}` 3. - Substitution patterns inside strings (like `'part-{number}'`) are active, and will be substituted. This is also as in the Jupyter feature (@felixcheung this is different from our last exchange) I have expanded the unit-tests to include these cases, and have added error checks for a variety of ill-formed patterns. The following screenshots show some examples of the feature in use.     Thanks for all your pointers and ideas.
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