Is there something similar to `\mathclap`

in TeXmacs?

In particular the following code:

```
<\equation*>
\<phi\>\<in\>\<Psi\><rsub|<around*|(|k,\<infty\>|)>><around*|<left|(|-2>|\<star\>,\<ldots\>,\<star\>,<wide|\<theta\><rsub|j>|\<wide-overbrace\>><rsup|j<rsup|th>
position>,\<star\>,\<ldots\>,\<star\>|<right|)|-2>>
</equation*>
```

gets rendered with a huge space around the overbrace because of the string “j^th position” string on top. Is there a way to tell TeXmacs to avoid using the box of the superscript in space computations? The only solution I found for now is using the “resize” macro and manually specifying the bounding box dimensions. This is unstable if I change the actual inside the superscript and below, under the brace.