Bug introduced in 10.0 or earlier and persisting through 11.3
Consider a String expression with a TemplateBox superscript:
expr = "\!\(\*TemplateBox[{\"base\",\"super\"},\n\"Superscript\"]\)"
In Mathematica 10.1 this produces errors when TeXForm is applied:
TeXForm[expr]
\$RecursionLimit::reclim2: Recursion depth of 4096 exceeded during evaluation of Message[Message::msgl,Hold[{\$RecursionLimit::reclim2,\$RecursionLimit::reclim2,$RecursionLimit::reclim2,General::stop}]]. >>
\$RecursionLimit::reclim2: Recursion depth of 4096 exceeded during evaluation of {\$RecursionLimit::reclim2}. >>
\$RecursionLimit::reclim2: Recursion depth of 4096 exceeded during evaluation of {OutputStream[Name: stdout Unique ID: 1]}. >>
General::stop: Further output of \$RecursionLimit::reclim2 will be suppressed during this calculation. >>
How can this be patched?
A related question, but not dealing with Strings:
