# Latexing, showing or viewing a held integral triggers its evaluation ???

*Note : for once, this will be cross-posted on sage-support for ticket advice...*

Exploring this question led me to discover what I think is a serious bug : it seems that `latex`

ing an expression *containing* a held (= unevaluated) integral triggers the latter's evaluation ; ditto for `view`

ing or `show`

ing...

Minimal case:

```
sage: Ig=sin(x)
sage: It=Ig.integrate(x,-pi,pi,hold=True)
sage: Cs=1/(2*pi)
sage: latex(It)
\int_{-\pi}^{\pi} \sin\left(x\right)\,{d x}
```

So far, so good. But :

```
sage: Ex=Cs*It
sage: Ex
1/2*integrate(sin(x), x, -pi, pi)/pi
sage: latex(Ex)
\frac{0}{2 \, \pi}
```

Aaaarghh ! And, of course :

```
sage: show(Ex)
\newcommand{\Bold}[1]{\mathbf{#1}}\frac{0}{2 \, \pi}
```

And `view(Ex`

proudly displays this crap...

IMHO, this is a serious bug, entailing a risk of inadvertently triggering long, impossible or never ending computations.

Advice ?

**EDIT :** On Cocalc, I have checked that the problem can be reproduced on all available Sage kernels back to 8.2.

Looks more like an error from me, rather than a bug...

Suggestions most welcome !

**EDIT :** One more data point: calling `latex`

(or `show`

or `view`

) on such an expression containing a held integral **in a hold context** gives a

`RecursionError`

.HTH,