- Improve logic of signatures colorizing and truncating, introduce sig_max_lines option

program/steps/mail/compose.inc

@@ -610,14 +610,24 @@ function rcmail_create_reply_body($body, $bodyIsHtml)
   global $RCMAIL, $MESSAGE, $LINE_LENGTH;
 
   if (!$bodyIsHtml) {
+    $body = preg_replace('/\r?\n/', "\n", $body);
+  
     // try to remove the signature
-    if ($RCMAIL->config->get('strip_existing_sig', true) && ($sp = strrpos($body, '-- ')) !== false && ($sp == 0 || $body{$sp-1} == "\n")) {
-      if ($body{$sp+3}==' ' || $body{$sp+3}=="\n" || $body{$sp+3}=="\r")
-        $body = substr($body, 0, max(0, $sp-1));
+    if ($RCMAIL->config->get('strip_existing_sig', true)) {
+      $len = strlen($body);
+      while (($sp = strrpos($body, "-- \n", $sp ? -$len+$sp-1 : 0)) !== false) {
+        if ($sp == 0 || $body[$sp-1] == "\n") {
+          // do not touch blocks with more that X lines
+          if (substr_count($body, "\n", $sp) < $RCMAIL->config->get('sig_max_lines', 15)) {
+            $body = substr($body, 0, max(0, $sp-1));
+          }
+          break;
+        }
+      }
     }
 
     // soft-wrap and quote message text
-    $body = rcmail_wrap_and_quote(rtrim($body, "\r\n"), $LINE_LENGTH);
+    $body = rcmail_wrap_and_quote(rtrim($body, "\n"), $LINE_LENGTH);
 
     // add title line(s)
     $prefix = sprintf("On %s, %s wrote:\n",

program/steps/mail/func.inc

@@ -754,6 +754,8 @@ function rcmail_print_body($part, $p = array())
  */
 function rcmail_plain_body($body, $flowed=false)
 {
+  global $RCMAIL;
+
   // make links and email-addresses clickable
   $replacer = new rcube_string_replacer;
 
@@ -780,9 +782,9 @@ function rcmail_plain_body($body, $flowed=false)
           str_repeat('</blockquote>', $quote_level - $q))) . $a_lines[$n];
       else if ($flowed) {
         // previous line is flowed
-        if (isset($a_lines[$last])
+        if (isset($a_lines[$last]) && $a_lines[$n]
           && $a_lines[$last][strlen($a_lines[$last])-1] == ' ') {
-          // merge lines (and remove space-stuffing)
+          // merge lines
           $a_lines[$last] .= $a_lines[$n];
           unset($a_lines[$n]);
         }
@@ -803,7 +805,7 @@ function rcmail_plain_body($body, $flowed=false)
             $a_lines[$n] = substr($a_lines[$n], 1);
 
           // previous line is flowed?
-          if (isset($a_lines[$last])
+          if (isset($a_lines[$last]) && $a_lines[$n]
             && $a_lines[$last] != '-- '
             && $a_lines[$last][strlen($a_lines[$last])-1] == ' '
           ) {
@@ -830,12 +832,14 @@ function rcmail_plain_body($body, $flowed=false)
   $body = Q(join("\n", $a_lines), '', false);
 
   // colorize signature
-  if (($sp = strrpos($body, "-- \n")) !== false) {
-    if (($sp == 0 || $body[$sp-1] == "\n")) {
-      // do not touch blocks with more that 10 lines
-      if (substr_count($body, "\n", $sp) < 10)
+  $len = strlen($body);
+  while (($sp = strrpos($body, "-- \n", $sp ? -$len+$sp-1 : 0)) !== false) {
+    if ($sp == 0 || $body[$sp-1] == "\n") {
+      // do not touch blocks with more that X lines
+      if (substr_count($body, "\n", $sp) < $RCMAIL->config->get('sig_max_lines', 15))
         $body = substr($body, 0, max(0, $sp))
           .'<span class="sig">'.substr($body, $sp).'</span>';
+      break;
     }
   }