javascript inserted between ECHO prevents string extraction in gettext v.0.11+

According to left_main html diff, in this modification only empty lines are
removed and single quotes are converted to double quotes for some attributes.

src/left_main.php

@@ -658,156 +658,139 @@ if (! isset($oldway) || $oldway=="" ) {
 }
 
 if ($advanced_tree) {
-$xtra .= <<<ECHO
-<script language="Javascript" type="text/javascript">
-
-<!--
-
-    function preload() {
-      if (document.images) {
-        var treeImages = new Array;
-        var arguments = preload.arguments;
-        for (var i = 0; i<arguments.length; i++) {
-          treeImages[i] = new Image();
-          treeImages[i].src = arguments[i];
-        }
-      }
-    }
-
-var vTreeImg;
-var vTreeDiv;
-var vTreeSrc;
-
-    function fTreeTimeout() {
-      if (vTreeDiv.readyState == "complete")
-        vTreeImg.src = vTreeSrc;
-      else
-        setTimeout("fTreeTimeout()", 100);
-    }
-
-    function hidechilds(img) {
-      id = img.id + ".0000";
-      form_id = "mbx[" + img.id +"F]";
-      if (document.all) { //IE, Opera7
-        div = document.all[id];
-        if (div) {
-           if (div.style.display == "none") {
-              vTreeSrc = "../images/minus.png";
-              style = "block";
-              value = 0;
-           }
-           else {
-              vTreeSrc = "../images/plus.png";
-              style = "none";
-              value = 1;
-           }
-           vTreeImg = img;
-           vTreeDiv = div;
-           if (typeof vTreeDiv.readyState != "undefined") //IE
-              setTimeout("fTreeTimeout()",100);
-           else //Non IE
-              vTreeImg.src = vTreeSrc;
-           div.style.display = style;
-           document.all[form_id].value = value;
-        }
-      }
-      else if (document.getElementById) { //Gecko
-        div = document.getElementById(id);
-        if (div) {
-           if (div.style.display == "none") {
-              src = "../images/minus.png";
-              style = "block";
-              value = 0;
-           }
-           else {
-              src = "../images/plus.png";
-              style = "none";
-              value = 1;
-           }
-           div.style.display = style;
-           img.src = src;
-           document.getElementById(form_id).value = value;
-        }
-      }
-    }
-
-   function buttonover(el,on) {
-      if (!on) {
-//         el.style.borderColor="$color[9]";}
-         el.style.background="$color[0]";}
-      else {
-         el.style.background="$color[9]";}
-   }
+$xtra .= '<script language="Javascript" type="text/javascript">'."\n".
+'<!--'."\n".
+'    function preload() {'."\n".
+'      if (document.images) {'."\n".
+'        var treeImages = new Array;'."\n".
+'        var arguments = preload.arguments;'."\n".
+'        for (var i = 0; i<arguments.length; i++) {'."\n".
+'          treeImages[i] = new Image();'."\n".
+'          treeImages[i].src = arguments[i];'."\n".
+'        }'."\n".
+'      }'."\n".
+'    }'."\n".
+'var vTreeImg;'."\n".
+'var vTreeDiv;'."\n".
+'var vTreeSrc;'."\n".
+'    function fTreeTimeout() {'."\n".
+'      if (vTreeDiv.readyState == "complete")'."\n".
+'        vTreeImg.src = vTreeSrc;'."\n".
+'      else'."\n".
+'        setTimeout("fTreeTimeout()", 100);'."\n".
+'    }'."\n".
+'    function hidechilds(img) {'."\n".
+'      id = img.id + ".0000";'."\n".
+'      form_id = "mbx[" + img.id +"F]";'."\n".
+'      if (document.all) { //IE, Opera7'."\n".
+'        div = document.all[id];'."\n".
+'        if (div) {'."\n".
+'           if (div.style.display == "none") {'."\n".
+'              vTreeSrc = "../images/minus.png";'."\n".
+'              style = "block";'."\n".
+'              value = 0;'."\n".
+'           }'."\n".
+'           else {'."\n".
+'              vTreeSrc = "../images/plus.png";'."\n".
+'              style = "none";'."\n".
+'              value = 1;'."\n".
+'           }'."\n".
+'           vTreeImg = img;'."\n".
+'           vTreeDiv = div;'."\n".
+'           if (typeof vTreeDiv.readyState != "undefined") //IE'."\n".
+'              setTimeout("fTreeTimeout()",100);'."\n".
+'           else //Non IE'."\n".
+'              vTreeImg.src = vTreeSrc;'."\n".
+'           div.style.display = style;'."\n".
+'           document.all[form_id].value = value;'."\n".
+'        }'."\n".
+'      }'."\n".
+'      else if (document.getElementById) { //Gecko'."\n".
+'        div = document.getElementById(id);'."\n".
+'        if (div) {'."\n".
+'           if (div.style.display == "none") {'."\n".
+'              src = "../images/minus.png";'."\n".
+'              style = "block";'."\n".
+'              value = 0;'."\n".
+'           }'."\n".
+'           else {'."\n".
+'              src = "../images/plus.png";'."\n".
+'              style = "none";'."\n".
+'              value = 1;'."\n".
+'           }'."\n".
+'           div.style.display = style;'."\n".
+'           img.src = src;'."\n".
+'           document.getElementById(form_id).value = value;'."\n".
+'        }'."\n".
+'      }'."\n".
+'    }'."\n".
+'   function buttonover(el,on) {'."\n".
+'      if (!on) {'."\n".
+"//         el.style.borderColor=\"$color[9]\";}\n".
+"         el.style.background=\"$color[0]\";}\n".
+'      else {'."\n".
+"         el.style.background=\"$color[9]\";}\n".
+'   }'."\n".
+'   function buttonclick(el,on) {'."\n".
+'      if (!on) {'."\n".
+'         el.style.border="groove";}'."\n".
+'      else {'."\n".
+'         el.style.border="ridge";}'."\n".
+'   }'."\n".
+'   function hideframe(hide) {'."\n".
+'      left_size = "' . $left_size . '";'."\n".
+'      if (document.all) {'."\n".
+'        masterf = window.parent.document.all["fs1"];'."\n".
+'        leftf = window.parent.document.all["left"];'."\n".
+'        leftcontent = document.all["leftframe"];'."\n".
+'        leftbutton = document.all["showf"];'."\n".
+'      } else if (document.getElementById) {'."\n".
+'        masterf = window.parent.document.getElementById("fs1");'."\n".
+'        leftf = window.parent.document.getElementById("left");'."\n".
+'        leftcontent = document.getElementById("leftframe");'."\n".
+'        leftbutton = document.getElementById("showf");'."\n".
+'      } else {'."\n".
+'        return false;'."\n".
+'      }'."\n".
+'      if(hide) {'."\n".
+'         new_col = calc_col("20");'."\n".
+'         masterf.cols = new_col;'."\n".
+'         document.body.scrollLeft=0;'."\n".
+'         document.body.style.overflow="hidden";'."\n".
+'         leftcontent.style.display = "none";'."\n".
+'         leftbutton.style.display="block";'."\n".
+'      } else {'."\n".
+'         masterf.cols = calc_col(left_size);'."\n".
+'         document.body.style.overflow="";'."\n".
+'         leftbutton.style.display="none";'."\n".
+'         leftcontent.style.display="block";'."\n".
+'      }'."\n".
+'   }'."\n".
+'   function calc_col(c_w) {'."\n";
 
-   function buttonclick(el,on) {
-      if (!on) {
-         el.style.border="groove";}
-      else {
-         el.style.border="ridge";}
-   }
-
-   function hideframe(hide) {
-
-ECHO;
-$xtra .= "      left_size = \"$left_size\";\n";
-$xtra .= <<<ECHO
-      if (document.all) {
-        masterf = window.parent.document.all["fs1"];
-        leftf = window.parent.document.all["left"];
-        leftcontent = document.all["leftframe"];
-        leftbutton = document.all["showf"];
-      } else if (document.getElementById) {
-        masterf = window.parent.document.getElementById("fs1");
-        leftf = window.parent.document.getElementById("left");
-        leftcontent = document.getElementById("leftframe");
-        leftbutton = document.getElementById("showf");
-      } else {
-        return false;
-      }
-      if(hide) {
-         new_col = calc_col("20");
-         masterf.cols = new_col;
-         document.body.scrollLeft=0;
-         document.body.style.overflow='hidden';
-         leftcontent.style.display = 'none';
-         leftbutton.style.display='block';
-      } else {
-         masterf.cols = calc_col(left_size);
-         document.body.style.overflow='';
-         leftbutton.style.display='none';
-         leftcontent.style.display='block';
-
-      }
-   }
-
-   function calc_col(c_w) {
-
-ECHO;
    if ($location_of_bar == 'right') {
        $xtra .= '     right=true;';
    } else {
        $xtra .= '     right=false;';
    }
    $xtra .= "\n";
-$xtra .= <<<ECHO
-     if (right) {
-         new_col = '*,'+c_w;
-     } else {
-         new_col = c_w+',*';
-     }
-     return new_col;
-   }
 
-   function resizeframe(direction) {
-     if (document.all) {
-        masterf = window.parent.document.all["fs1"];
-     } else if (document.getElementById) {
-        window.parent.document.getElementById("fs1");
-     } else {
-        return false;
-     }
+$xtra .= 'if (right) {'."\n".
+"         new_col = '*,'+c_w;"."\n".
+'     } else {'."\n".
+"         new_col = c_w+',*';"."\n".
+'     }'."\n".
+'     return new_col;'."\n".
+'   }'."\n".
+'   function resizeframe(direction) {'."\n".
+'     if (document.all) {'."\n".
+'        masterf = window.parent.document.all["fs1"];'."\n".
+'     } else if (document.getElementById) {'."\n".
+'        window.parent.document.getElementById("fs1");'."\n".
+'     } else {'."\n".
+'        return false;'."\n".
+'     }'."\n";
 
-ECHO;
    if ($location_of_bar == 'right') {
        $xtra .= '  colPat=/^\*,(\d+)$/;';
    } else {
@@ -815,108 +798,86 @@ ECHO;
    }
    $xtra .= "\n";
 
-$xtra .= <<<ECHO
-     old_col = masterf.cols;
-     colPat.exec(old_col);
-
-     if (direction) {
-        new_col_width = parseInt(RegExp.$1) + 25;
-
-     } else {
-        if (parseInt(RegExp.$1) > 35) {
-           new_col_width = parseInt(RegExp.$1) - 25;
-        }
-     }
-     masterf.cols = calc_col(new_col_width);
-   }
-
-//-->
-
-</script>
-
-ECHO;
+$xtra .= 'old_col = masterf.cols;'."\n".
+'     colPat.exec(old_col);'."\n".
+'     if (direction) {'."\n".
+'        new_col_width = parseInt(RegExp.$1) + 25;'."\n".
+'     } else {'."\n".
+'        if (parseInt(RegExp.$1) > 35) {'."\n".
+'           new_col_width = parseInt(RegExp.$1) - 25;'."\n".
+'        }'."\n".
+'     }'."\n".
+'     masterf.cols = calc_col(new_col_width);'."\n".
+'   }'."\n".
+'//-->'."\n".
+'</script>'."\n";
 
 /* style definitions */
 
-$xtra .= <<<ECHO
-
-<style type="text/css">
-<!--
-  body {
-     margin: 0px 0px 0px 0px;
-     padding: 5px 5px 5px 5px;
-  }
-
-  .button {
-     border:outset;
-     border-color: $color[9];
-     background:$color[0];
-     color:$color[6];
-     width:99%;
-     heigth:99%;
-  }
-
-  .mbx_par {
-     font-size:1.0em;
-     margin-left:4px;
-     margin-right:0px;
-  }
-
-  a.mbx_link {
-      text-decoration: none;
-      background-color: $color[0];
-      display: inline;
-  }
-
-  a:hover.mbx_link {
-      background-color: $color[9];
-  }
-
-  a.mbx_link img {
-      border-style: none;
-  }
-
-  .mbx_sub {
-     padding-left:5px;
-     padding-right:0px;
-     margin-left:4px;
-     margin-right:0px;
-     font-size:0.9em;
-  }
-
-  .par_area {
-     margin-top:0px;
-     margin-left:4px;
-     margin-right:0px;
-     padding-left:10px;
-     padding-bottom:5px;
-     border-left: solid;
-     border-left-width:0.1em;
-     border-left-color:$color[9];
-     border-bottom: solid;
-     border-bottom-width:0.1em;
-     border-bottom-color:$color[9];
-     display: block;
-  }
-
-  .mailboxes {
-     padding-bottom:3px;
-     margin-right:4px;
-     padding-right:4px;
-     margin-left:4px;
-     padding-left:4px;
-     border: groove;
-     border-width:0.1em;
-     border-color:$color[9];
-     background: $color[0];
-  }
-
--->
-
-</style>
-
-ECHO;
-
+$xtra .= '<style type="text/css">'."\n".
+'<!--'."\n".
+'  body {'."\n".
+'     margin: 0px 0px 0px 0px;'."\n".
+'     padding: 5px 5px 5px 5px;'."\n".
+'  }'."\n".
+'  .button {'."\n".
+'     border:outset;'."\n".
+"     border-color: $color[9];\n".
+"     background:$color[0];\n".
+"     color:$color[6];\n".
+'     width:99%;'."\n".
+'     heigth:99%;'."\n".
+'  }'."\n".
+'  .mbx_par {'."\n".
+'     font-size:1.0em;'."\n".
+'     margin-left:4px;'."\n".
+'     margin-right:0px;'."\n".
+'  }'."\n".
+'  a.mbx_link {'."\n".
+'      text-decoration: none;'."\n".
+"      background-color: $color[0];\n".
+'      display: inline;'."\n".
+'  }'."\n".
+'  a:hover.mbx_link {'."\n".
+"      background-color: $color[9];\n".
+'  }'."\n".
+'  a.mbx_link img {'."\n".
+'      border-style: none;'."\n".
+'  }'."\n".
+'  .mbx_sub {'."\n".
+'     padding-left:5px;'."\n".
+'     padding-right:0px;'."\n".
+'     margin-left:4px;'."\n".
+'     margin-right:0px;'."\n".
+'     font-size:0.9em;'."\n".
+'  }'."\n".
+'  .par_area {'."\n".
+'     margin-top:0px;'."\n".
+'     margin-left:4px;'."\n".
+'     margin-right:0px;'."\n".
+'     padding-left:10px;'."\n".
+'     padding-bottom:5px;'."\n".
+'     border-left: solid;'."\n".
+'     border-left-width:0.1em;'."\n".
+"     border-left-color:$color[9];\n".
+'     border-bottom: solid;'."\n".
+'     border-bottom-width:0.1em;'."\n".
+"     border-bottom-color:$color[9];\n".
+'     display: block;'."\n".
+'  }'."\n".
+'  .mailboxes {'."\n".
+'     padding-bottom:3px;'."\n".
+'     margin-right:4px;'."\n".
+'     padding-right:4px;'."\n".
+'     margin-left:4px;'."\n".
+'     padding-left:4px;'."\n".
+'     border: groove;'."\n".
+'     border-width:0.1em;'."\n".
+"     border-color:$color[9];\n".
+"     background: $color[0];\n".
+'  }'."\n".
+'-->'."\n".
+'</style>'."\n";
 }
 
 displayHtmlHeader( 'SquirrelMail', $xtra );