Code: Select all

if (UltraEdit.document.length > 0)  // Is any file opened?
{
   // Define environment for this script.
   UltraEdit.insertMode();
   UltraEdit.columnModeOff();

   // Move caret to top of the active file.
   UltraEdit.activeDocument.selectAll();
   if (UltraEdit.activeDocument.isSel())
   {
      // Determine type of line terminator. Default is DOS.
      var sLineTerm = "\r\n";
      if (typeof(UltraEdit.activeDocument.lineTerminator) == "number")
      {
         if (UltraEdit.activeDocument.lineTerminator == 1) sLineTerm = "\n";
         else if (UltraEdit.activeDocument.lineTerminator == 2) sLineTerm = "\r";
      }
      // Get all lines into an array of strings.
      var asLines = UltraEdit.activeDocument.selection.split(sLineTerm);
      // Remove the last string if it is an empty string.
      if (asLines[asLines.length-1] == "") asLines.pop();

      // Find lines with same terms as on another line and remove them.
      for (nLine = 0; nLine < (asLines.length-1); nLine++)
      {
         // Optimization: Next line can be commented if
         // all lines contain safely always an equal sign.
         if (asLines[nLine].indexOf('=') < 0) continue;
         
         // Get the terms around the equal sign exchanged in a new string.
         var sCompare = asLines[nLine].replace(/^(.+?)=(.+)$/,"$2=$1");

         var nCompare = nLine+1;
         while (nCompare < asLines.length)
         {
            // Optimization: The next line could be uncommented to speed up
            // the script if the file contains the lines sorted and the words
            // left and right the equal sign always start with same character.
            // if (asLines[nCompare][0] != sCompare[0]) break;

            if (asLines[nCompare] != sCompare) nCompare++;
            else
            {
               asLines.splice(nCompare,1);
               // Optimization: Uncomment next line for decreasing process
               // time if file contains the lines sorted and all duplicate
               // lines were already removed before running the script.
               // break;
            }
         }
      }
      // Append an empty string to get finally a line termination
      // at end of file after pasting the joined lines via user
      // clipboard over the selection in active file.
      asLines.push("");
      UltraEdit.selectClipboard(9);
      UltraEdit.clipboardContent = asLines.join(sLineTerm);
      UltraEdit.activeDocument.paste();
      UltraEdit.clearClipboard();
      UltraEdit.selectClipboard(0);
   }
   UltraEdit.activeDocument.top();
}