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numbas / Numbas

A completely browser-based e-assessment/e-learning system, with an emphasis on mathematics
http://www.numbas.org.uk
Apache License 2.0
203 stars 118 forks source link

Gapfill Marking Algorithm Issue #603

Closed andy-iskauskas closed 5 years ago

andy-iskauskas commented 5 years ago

If a gapfill question has a mathematical expression as a gap, there seems to be an error thrown in any sort of use of marking algorithms. As a MWE, take a gapfill part with a single 'expression' gap: entering any expression (before writing any custom marking algorithm or even ticking the 'use custom marking algorithm?' boxes) into the 'Student's answer' box in the 'Marking algorithm' tab throws a error in the browser console: "Numbas Error: Can't texify token type ↵ at jme.display.treeToJME". See image below for a demonstration of this behaviour. In practice, this seems to stops the definition and evaluation of any custom marking notes. When the aim is to have a two-gap question marked entirely by a custom marking algorithm on the overarching gapfill part, this is somewhat problematic.. screenshot from 2019-03-06 12-10-34

christianp commented 5 years ago

Thanks for reporting this. I think I've fixed it - please take a look and close this issue if so.

andy-iskauskas commented 5 years ago

That has done the job! Thanks.