According to the tse.ui for TSE for Linux this should happen if you press
those keys:
<Ctrl Ins> CopyToWinClip()
<Shift Ins> PasteFromWinClip()
and that is what is default burned in to the TSE e editor
and what is expected to happen if you press
any of those 2 keys when running it in Linux (WSL or non-WSL).
===
Note: You are thus *fully right* regarding
your description of using
<Shift Ins>
(and having to click the right cursor button
afterwards to get the full paste information,
which is or looks indeed something like a bug).
That works in TSE for Linux 4.50.13 on non-WSL Linux Ubuntu
between applications.
So using <Shift Ins> is definitely also a method to paste from the system
clipboard in Linux non-WSL into TSE.
That <Shift Ins> action thus definitely pastes from the system clipboard.
But that it works MUST be something on (Linux) Operating System level.
Because pressing <Shift Ins> in TSE showkey macro
does NOT show
<Shift Ins>
as expected, but
</>
instead, so TSE will not react to that.
See the first screenshot below showing that </> after pressing
<Shift Ins> when running the TSE native macro 'showkey'.
I assume thus this working paste is operating system level behavior and NOT
caused by TSE executing PasteFromWinClip(), because that PasteFromWinClip() is
NOT implemented at all by Semware at this moment in TSE for Linux non-WSL.
===
Regarding its counterpart
<Ctrl Ins>
(=copy to system clipboard) that could thus
actually work in Linux non-WSL.
See the second screenshot below.
Root cause: But Semware has NOT implemented CopyToWinClip() for Linux non-WSL, so that
<Ctrl Ins> key press action does nothing and is thus ignored.
===
Screenshot:
Result of pressing <Shift Ins> (thus paste from system clipboard) in TSE for Linux 4.50.13 running on Linux non-WSL Ubuntu
inside an xterm terminal. It shows thus </> instead of the expected <Shift Ins>
Screenshot:
Result of pressing <Ctrl Ins> (thus copy to system clipboard) in TSE for Linux 4.50.13 running on Linux non-WSL Ubuntu
inside an xterm terminal. It shows thus as expected <Ctr Ins>.