How to check if strikethrough is available

A strikethrough attribute is available since patch 1038.
:help strikethrough says
In general "undercurl" and "strikethrough" is only available in the GUI.
But my cygwin and neovim terminals can also show it
and then I am looking for how to check and use it as much as possible.

I am now trying with:
has('patch-8.0.1038') &&
\(&term == 'builtin_gui' || &termguicolors || (!empty(&t_Ts) && !empty(&t_Te)))

I would appreciate if you could give me more useful way.

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