Customization options: undefinedResult provider '???', pipeNotFound handler

[csetea]

It is confusing to become '???' as default result if value not found in context.
My use case scenario is the next:
I process templates in more steps to generate UI and documents e.g.:

• preprocessing:
  1. include other templates
  2. replace message placeholders (i18n)
  3. cache the preprocessed tempalte
• fill with model values
  • fill the templates with model values

PS: Mark.up rocks!

[csetea]

i have forgotten to describe the advantage in details - but it is evident.
The default undefinedResult implementation returns with ??? as otherwise would happen.

In my scenario i assign an implementation that returns with the original 'tag' which not breaks the templating in more steps.

Examples for another customization use cases:

• logging expressions that are not found in context
• default value resolving depending on context and expression
• fire event ...

[adammark]

Thanks for this! I'll check out ASAP.