Many thanks Andreas,
Yes, that seems to work very well.
Thanks for the hints, yes actually I should learn about that, but it looks
extremely comprehensive. I just tried such a regex tester, it shows two errors
obviously, but I could imagine they are not really errors, your regex works
great as far as I can see:
/.*https?://.*\.(jpeg|jpg|gif|png).*/
Errors are explained from left to right. Move the mouse cursor over them to
see the error highlighted in your pattern
/: Unescaped delimiter
/: Unescaped delimiter
Many thanks again.
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