UltraEdit - grep

// Behält nur die Zeilen, die den Filter-RegExp erfüllen (oder nicht erfüllen)
res = UltraEdit.getString("Filter (RegExp). Negativ: 'v ' voranstellen",1);
var positive = true;
if (res.match(/v\s+(.*)/)) {
  positive = false;
  res = RegExp.$1;
  }
var re = new RegExp( res );

var doc = UltraEdit.activeDocument;
if (!doc.selection.match(/\S/)) doc.selectAll();
var selection = doc.selection
                   .replace( /^\xEF\xBB\xBF/,"")  // Unicode-BOM
                   .replace( /\x00/g,"");         // Unicode-Bytes enfernen

var lineEnd   = selection.match( /[\r\n]{1,2}/ ) || "\r\n" ;
var lines     = selection.split( lineEnd );
var result    = "";
var lineMatches;

for (var i=0;i<lines.length;i++) {
  lineMatches = !! lines[i].match(re);
  if (positive == lineMatches) result += lines[i] + lineEnd;
  }

doc.write( result );