How to enable spellcheck in custom command's argument?

[tmczar]

Imagine this code snippet:

\documentclass{article}
\newcommand{\fluff}[1]{\emph{#1}}
\begin{document}

\emph{werbiuvbiwyhe}
\fluff{werbiuvbiwyhe}

\end{document}

This is of course basic example. werbiuvbiwyhe is just some garbage word - it's not real. And grazie happily reports a typo:

But only in \emph line. I assume, that this is because \fluff is a custom command, so TeXiFy does not pass it's argument to a spellcheck, (which makes perfect sense, as it cannot know whether an argument is expected to be real text, or something else).

I would like to inform TexiFy that argument of my custom command is expected to be text and it should be spellchecked. How should I do it? (I checked the docs, and found nothing).

[PHPirates]

That is a very good question. On the other hand, maybe we do want to do spellcheck also for text in any command, even if it is e.g. a label or environment name. I think in Kotlin spellcheck is also done for variable names, for example. We do need to do this carefully to avoid issues like #3494.