// removeBlanc_beforeCS.jsx 
 
var myCounter = 0; 
var myDoc = app.documents.firstItem(); 
var myRange = (app.selection.length > 0)  
	? app.selection[0].parentStory 
	: myDoc; 
var myBaseStyle = "Fußnotenzeichen"; 
var theDialog = myDisplayDialog(); 
var myStyle = myDoc.characterStyles.item(theDialog); 
 
app.findTextPreferences = null; app.changeTextPreferences = null; 
app.findTextPreferences.appliedCharacterStyle = myStyle; 
var myResult = myRange.findText(); 
 
for (oneResult = myResult.length-1; oneResult >= 0; oneResult--) 
{ 
	try{ 
		var myIndex = myResult[oneResult].characters[0].index; 
		if (myResult[oneResult].parent.characters[myIndex -1].contents.match(/\s/) ) 
		{ 
			myResult[oneResult].parent.characters[myIndex -1].remove(); 
			myCounter += 1; 
		} 
	} catch(e){} 
} 
alert("Ergebnis:\r" + myCounter + " Leerzeichen gelöscht"); 
 
 
function myDisplayDialog(){ 
	var myFieldWidth = 80; 
	var myCharStyles = myDoc.characterStyles.everyItem().name; 
	// Festlegung Vorauswahl  
	for (theCSIndex = myCharStyles.length-1; theCSIndex >= 0; theCSIndex--) 
	{ 
		if (myCharStyles[theCSIndex].substr(0,myBaseStyle.length) == myBaseStyle) break; 
	} 
 
	var myDialog = app.dialogs.add({name:"Prüfe auf Leerzeichen vor dem Zeichenformat"}); 
	with(myDialog.dialogColumns.add()){ 
		with(dialogRows.add()){ 
			with(dialogColumns.add()){ 
				staticTexts.add({staticLabel:"Zeichenformat:", minWidth:myFieldWidth}); 
			} 
			with(dialogColumns.add()){ 
				var mySourceDropdown = dropdowns.add({stringList:myCharStyles, selectedIndex:theCSIndex}); 
			} 
		} 
	} 
	var myResult = myDialog.show(); 
	if(myResult == true){ 
		var theCharStyle =myCharStyles[mySourceDropdown.selectedIndex]; 
		myDialog.destroy(); 
	} 
	else{ 
		myDialog.destroy() 
		exit(); 
	} 
	return theCharStyle; 
}