Am Sa., 15. Feb. 2020 um 17:30 Uhr schrieb Thiede, Christoph
<Christoph.Thiede at student.hpi.uni-potsdam.de>:
>
> Marcel gave the germane critique that such dialogs should preserve the possibility to replace the initial selection with a custom filter, without caring about any header, what's not possible with arguments at the moment.
>

Not sure I understand this correctly... is the requirement that you
should be able to type right away without accidentally overwriting the
boilerplate code of the operation? The surrounding block and its
arguments in this case.

If you just want an expression, why indicate asking for a complete
method text? If you avoid that, the question about ^ or not can be
avoided. Just mention the variable names that can be used in the
prompt. This makes them fix, but is it necessary to be able to change
them?