support greek letters

pangu.py  has Fixed. see: vinta/pangu.py#10

pangu.php

@@ -46,12 +46,12 @@ function pangu($text) {
     ),
 
     'cjk_operator_ans' => array(
-      '([' . $cjk . '])([A-Za-z0-9])([\+\-\*\/=&\\|<>])',
+      '([' . $cjk . '])([A-Za-zΑ-Ωα-ω0-9])([\+\-\*\/=&\\|<>])',
       '$1 $2 $3'
     ),
 
     'ans_operator_cjk' => array(
-      '([\+\-\*\/=&\\|<>])([A-Za-z0-9])([' . $cjk . '])',
+      '([\+\-\*\/=&\\|<>])([A-Za-zΑ-Ωα-ω0-9])([' . $cjk . '])',
       '$1 $2 $3'
     ),
 
@@ -80,12 +80,12 @@ function pangu($text) {
     ),
 
     'cjk_ans' => array(
-      '([' . $cjk . '])([A-Za-z0-9`@&%\=\$\^\*\-\+\\/|\\\])',
+      '([' . $cjk . '])([A-Za-zΑ-Ωα-ω0-9`@&%\=\$\^\*\-\+\\/|\\\])',
       '$1 $2'
     ),
 
     'ans_cjk' => array(
-      '([A-Za-z0-9`~!%&=;\|\,\.\:\?\$\^\*\-\+\/\\\])([' . $cjk . '])',
+      '([A-Za-zΑ-Ωα-ω0-9`~!%&=;\|\,\.\:\?\$\^\*\-\+\/\\\])([' . $cjk . '])',
       '$1 $2'
     )
   );