In a recent comment, I used the \text{} command inside a \frac{}{} command several times, and the comment was broken. Trimming it down several times to try to produce a minimal example, I found quite odd behavior.

The following input breaks in a comment:



enter image description here

Remove any of the a's, or the =, and the above comment displays correctly. The comment also displays correctly if one removes the \left and \right commands.

If you write the same comment, except with $$'s around the expression instead of just $'s, the threshold goes down by one character; remove any two of the a's, or an a and the =, and the comment displays correctly, otherwise it is broken.

The original example, and all of the versions described above, display correctly when put in the answer field.

Now, I think that perhaps there's something to be said for the argument "you shouldn't be using \text{} so much anyway, or at least not inside \frac{}{}", but I don't know what else this bug might affect, so I am reporting it.

I'm using Chrome 19.0.1084.52 on Windows 7 64-bit.

  • $\begingroup$ My guess is that this is something to do with the automatic linebreaks. In the following comment I have added a space after the = symbol: $\endgroup$ – Asaf Karagila Jun 4 '12 at 22:49
  • $\begingroup$ $\frac{\text{aaaaa}}{\text{aaaaa}}= \left(\frac{\text{aaaaa}}{\text{aaaaa}}\right)$ $\endgroup$ – Asaf Karagila Jun 4 '12 at 22:49
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    $\begingroup$ This seems related to this issue observed by joriki and the workaround explained by robjohn in an answer there works: insert some blanks in the endless worm of TeX (e.g. around the equality sign) and it works: $\frac{\text{aaaaa}}{\text{aaaaa}} = \left(\frac{\text{aaaaa}}{\text{aaaaa}}\right)$. @Asaf: yep. $\endgroup$ – t.b. Jun 4 '12 at 22:50
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    $\begingroup$ @t.b.: You should post that as an answer. I would do that myself, but I have a meeting with the sandman, Morpheus and other mythological creatures related to the realm of sleep... $\endgroup$ – Asaf Karagila Jun 4 '12 at 22:52
  • $\begingroup$ It appears that some of the MathJax developers read this forum, but note that the project does accept bug reports. $\endgroup$ – Dylan Moreland Jun 5 '12 at 4:34

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