Allow configurable block/variable/comment starts and ends

[sohaibiftikhar]

Currently, Jinjava does not allow the some configurations from the jinja Environment.

Notably the following configs are not supported:

• block_start_string
• block_end_string
• variable_start_string
• variable_end_string
• comment_end_string
• comment_end_string

For instance, current jinjava uses {{ as variable starts. If we have {{ in our template string parsing fails. It would be nice if we can have configuration for this.

[jeffmay]

The standard Jinja rendered supports this: http://jinja.pocoo.org/docs/2.10/api/#jinja2.Environment

I can't use this library without that support.

[boulter]

Hi @jeffmay and @sohaibiftikhar, if you or anyone else wanted to implement support for these, here's some pointers on where to start:

https://github.com/HubSpot/jinjava/blob/master/src/main/java/com/hubspot/jinjava/tree/parse/TokenScannerSymbols.java

https://github.com/HubSpot/jinjava/blob/master/src/main/java/com/hubspot/jinjava/tree/parse/ExpressionToken.java

https://github.com/HubSpot/jinjava/blob/master/src/main/java/com/hubspot/jinjava/tree/ExpressionNode.java

https://github.com/HubSpot/jinjava/blob/master/src/main/java/com/hubspot/jinjava/el/ExpressionResolver.java

and then you'd add the configuration options in https://github.com/HubSpot/jinjava/blob/master/src/main/java/com/hubspot/jinjava/JinjavaConfig.java

[jmoraleda]

I am curious to determine the level of interest in this feature and whether it is currently in anyone's roadmap. Thank you.