Exception on reading a value from cell with error about docjure HOT 2 OPEN

Various people have mentioned error cell handling in previous issues and pull requests (e.g. pull request #11). Some people want the errors ignored, other want them replaced by a symbol and other clients may have yet other needs.

So, until now I preferred to just let the errors bubble up to the application.

If you can think of a way to provide pluggable error-handling strategies (for example to silent return error cells as blank, nil or :error) I would be happy to accept a pull request.

Maybe it can be done inside the existing multi-method design.

Another possibility is to move towards more of a state-machine approach so the POI object that is passed to the docjure functions is wrapped in a Clojure data structure which could then also include error handling strategies as higher-order function(s).

For a 2.0 release I prefer the latter, as it would also provide a good basis for making the text formatting stuff less imperative and more functional.

How do you propose to solve it?

from docjure.

It looks like it really can be done in multi-method design by just adding a handler for Cell/CELL_TYPE_ERROR. What about returning some kind of record with brief error info? It won't overlap with other cell types. Returning :error or nil can be not enough for a particular task if read-cell aims to satisfy all reading needs.

from docjure.