Is there any way to list regular expressions snippers (option r)

[jambag]

I only want to know if there is a way to list snippets created with option r (pyton regular expression). For example:

snippet "be(gin)?( (\S+))?" "begin{} / end{}" br
\begin{${1:`!p
...

I've configured "g:UltiSnipsListSnippets", but this type of snippets don't appear on the list, and that's important for me to avoid remembering them.

Sorry I've not found the solution in docs and this list of issues.

Thank you very much

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• Operating System: Cygwin on WIndows 10
• Vim Version: 8.2.4372
• UltiSnips Version: 3.2 (latest)
• Python inside Vim: 3.9.10
• Docker repo/vimrc: