AIS CC: how undoing the actions of a JS run via app.doScript

Question

Hello,AIS CC (9.0)I wrote a JavaScript, which I can properly run through app.doScript(UndoModes.fastEntireScript, etc.).Now, at a given time, I would like to programmatically undo the actions of my own script.The various resources I have got here (InDesign_ScriptingGuide_JS (CS6), InDesign_ScriptingTutorial, the ExtendScript Toolkit Object Model browser) suggest things (app.undo(), app.documents.item(0).undo(), etc.) which fail, when executed on my AIS CC.Any idea or tip, on how to undo actions submitted via doScript on AIS CC?Thanks in advance!Kind regards,GBSnippet:
var main = function()
{
     // something
}

app.doScript(
     main,
     ScriptLanguage.javascript,
     undefined,
     UndoModes.fastEntireScript
     ); // << this works perfectly: the actions in the "main" function are executed

app.undo(); // << this will fail with "app.undo is not a function"

TᴀW · Answer

Well, you're in a bind -- because you've wrapped everything up in a

fastEntireScript, that effectively makes the entire script a single undo

step. So when you call app.undo(), you're undoing the entire script,

which is probably not what you want.

Incidentally, fastEntireScript used to be very buggy -- the

recommendation is to us entireScript. Not sure if that was fixed for the

latest version.

Anyway, the only idea I have is to nest what you need to undo in a

UndoModes.SCRIPT_REQUEST. Perhaps that way you will be able to undo that

step individually.

You may want to reconsider why your script needs to undo anything

anyway. It sounds an inefficient way to write a script, although I can

see that for a quick one-off it may be the simplest way of doing some

things.

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