with 4.12, if you have endfunction without function, the script runs just fine and once it meets the command, it says:
unknown or unexpected command [EndFunction]

with 4.20 (rc2) you get:
error: unexpected command [%s]

and with 4.21 rc1:
error: unexpected command

now, I don't know what others think but I see this as really bad.
you may need to debug your scripts for hours before realizing the cause...
not maybe with endfunction but other more normal commands.
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