In several old questions/answers I have seen in MathJax the combination \\, where it obviously should be \, and also \* where it should be just * - the result is a badly distorted formula, torn into confusingly displaced pieces in the first case, and just a red $\*$ in the second case.

I have just corrected it for https://mathoverflow.net/a/104701/41291, and I have done this at least twice before, so I now suspect there might be some bug doing this.

On the other hand this seemingly only occurs in relatively old posts, so maybe there was a bug which is extinguished by now.

Is this a known issue?


1 Answer 1


The system used to break \, which required entering a double \\ for $\rm\LaTeX$ commands to work. This was resolved a long long time ago.

  • $\begingroup$ OK I see. So the remaining cases can be only repaired manually? $\endgroup$ Commented Mar 19, 2017 at 5:41
  • 3
    $\begingroup$ As explained in the question linked by jeq, the devs promised to fix it automatically, but as this didn’t happen in the 3 1/2 years since migration, it is a safe bet it never will. So, manual repair seems to be the option to go with. $\endgroup$ Commented Mar 20, 2017 at 8:40
  • $\begingroup$ @Emil: Sometimes a bit of prodding is needed. But I wouldn't say never. $\endgroup$
    – Asaf Karagila Mod
    Commented Mar 20, 2017 at 8:48
  • $\begingroup$ @AsafKaragila I (and others) did try that, you know. $\endgroup$ Commented Mar 20, 2017 at 10:12

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