Superscript/subscript markup fails if not preceded by spaces

Issue Summary

Superscript/subscript markup fails if not preceded by spaces

Steps to reproduce 

• Type in a comment/summary: 2 ^N+1 and 2^N^+1 in wiki markup
• Alternatively type ₀+1 and a~0~+1 in wiki markup.

Expected results

Correct markup with superscript (first case) and subscript (last case) is shown.
 

Actual results

succeeds: 2 ^N+1
fails: 2^N^+1

succeeds: a ₀+1
fails: a~0~+1

Workaround

• Use spaces between the object to be superscript/subscript
• You can put the markup in braces:

  n{^}2^

  results in: n²

  • This workaround comes from this community question. Credit to nomaed for finding this.