[JW Lua] Return value issue with v0.66

[Jan Angermüller]

Hm, I can't reproduce what you write.
Could it be that you checked on macOS? Maybe it's different there?

Here is a screen cam video that shows what I wrote:
https://www.youtube.com/watch?v=fXA0K92z_bQ

when Finale 27/Win10 is (re-)started the first plug-in call returns the 
correct /errmsg /(here: "false" which comes from clicking "Cancel" in 
the Perfect Layout user dialog).
The second time I run Perfect Layout with the same clicks, /errmsg /is /"".
/If I restarted Finale once more (which is not in the video), it would 
again show the correct /errmsg /the first time, but an empty value on 
subsequent calls./
/
Jan

Am 12.03.2023 um 20:41 schrieb Robert Patterson:
> Okay, so it isn't exactly a bug. ExecuteLuaScriptItem returns the top 
> value on the Lua stack, which is the *last* value returned. So the 
> question is, do I modify it to return the first value returned (i.e., 
> the last value on the stack), or do I modify the docs to say it 
> returns the last value returned?
>
> Mir ist es egal.
>
>
> On Sun, Mar 12, 2023 at 2:24 PM Robert Patterson 
> <robert at robertgpatterson.com> wrote:
>
>     I created this script called "test_return_value.lua":
>
>     function plugindef()
>         finaleplugin.RequireDocument = false
>         finaleplugin.LoadLuaSocket = true
>         finaleplugin.IgnoreReturnValue = true
>     end
>
>     return 11, 12, 13
>
>
>     And I call it with this script:
>
>
>     local script_path = finenv.RunningLuaFolderPath() ..
>     "test_return_value.lua"
>     local items = finenv.CreateLuaScriptItemsFromFilePath(script_path)
>     local success, errmsg, msgtype =
>     finenv.ExecuteLuaScriptItem(items:GetItemAt(0))
>     if errmsg ~= null then print("type", msgtype, errmsg) end
>
>     It always returns: success==true, errmsg=="13", msgtype==0.
>
>     The bug here is that it should be returning errmsg=="11". I'm not
>     sure why it isn't, and I need to research it.
>
>
>
>     On Sun, Mar 12, 2023 at 1:12 PM Jan Angermüller
>     <jan at angermueller.com> wrote:
>
>         Robert,
>
>         thanks a lot for v0.66!
>
>         I have been testing the compatibility with Perfect Layout and
>         also tried the new "return value" handling.
>         It seems to me like there is still a problem. I tried it in
>         Fin27/Win10/RGP Lua v.66.
>
>         I call the plug-in with:
>         local success,d1,d2=finenv.ExecuteLuaScriptItem(script)
>
>         When the plug-in ended without error, but with:
>         return 11,12,13
>
>         The script above gave these values:
>         success=true
>         d1=13
>         d2=0
>
>         I think this is correct. (However, I have not found it in the
>         documentation.)
>         *
>         **BUT: *this only happened the very first time when I called
>         the script directly after starting Finale.
>         When I run the ExecuteLuaScriptItem a second time, it always
>         results in:
>
>         success=true
>         d1=""            --or at least it's an "empty nothing" when I
>         print it with   tostring(d1). It's not nil.
>         d2=0
>
>         So after the first run I can't influence the return value anymore.
>         Seems like the return value is permanently stored somewhere in
>         RGP Lua.
>
>         When I restart Finale, it's the same behaviour: first time
>         correct value 13, after that "".
>
>         Jan
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>
>
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-- 
Jan Angermüller
Orchideenstieg 13
22297 Hamburg
Tel. 040 - 28 94 84 82
Mobil 0173 - 99 33 904
www.elbsound.studio
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