//DESCRIPTION: Begone, Ugly End Of Line Underlining!
// (c) Jongware 16-Dec-2009

var blankStyle = app.activeDocument.characterStyles.item("NoUnderline");

try { blankStyle.index; } catch(_)
{
blankStyle = undefined;
}

if (blankStyle == undefined)
{
blankStyle = app.activeDocument.characterStyles.add();
blankStyle.name = "NoUnderline";
blankStyle.underline = false;
}

for (a=0; a<app.selection[0].lines.length; a++)
{
if (app.selection[0].lines[a].characters.item(-1).contents == " ")
app.selection[0].lines[a].characters.item(-1).appliedCharacterStyle = blankStyle;
}