Gobo Regexp and Unicode support.

I read somewhere Gobo Regexp doesn't support Unicode yet.
After some investigation. I found some minor changes would make it
support Unicode (See following patch).

Can someone confirm? And merge it into the library if possible.

Index: interface/rx_regular_expression.e
===================================================================
--- interface/rx_regular_expression.e	(revision 6423)
+++ interface/rx_regular_expression.e	(working copy)
@@ -49,12 +49,12 @@
 			a_string_same_type: ANY_.same_types (a_string, a_replacement)
 		local
 			i, j, nb, ref: INTEGER
-			c: CHARACTER
+			c: INTEGER
 		do
 			nb := a_replacement.count
 			from i := 1 until i > nb loop
-				c := a_replacement.item (i)
-				if c = '\' then
+				c := a_replacement.item_code (i)
+				if c = ('\').code then
 					from
 						i := i + 1
 						j := i
@@ -63,13 +63,13 @@
 						i > nb or else
 						(a_replacement.item_code (i) < Zero_code or
a_replacement.item_code (i) > Nine_code)
 					loop
-						c := a_replacement.item (i)
-						ref := ref * 10 + c.code - Zero_code
+						c := a_replacement.item_code (i)
+						ref := ref * 10 + c - Zero_code
 						i := i + 1
 					end
 					if i <= nb then
-						c := a_replacement.item (i)
-						if c = '\' then
+						c := a_replacement.item_code (i)
+						if c = ('\').code then
 							if i > j then
 									-- Minimal one digit readed,
 								if ref < match_count then
@@ -77,7 +77,7 @@
 								end
 							else
 									-- Double backslash means one \\ => \.
-								a_string.append_character (c)
+								a_string.append_code (c.as_natural_32)
 							end
 							i := i + 1
 						else
@@ -95,7 +95,7 @@
 					end
 				else
 						-- Simply put the character in.
-					a_string.append_character (c)
+					a_string.append_code (c.as_natural_32)
 					i := i + 1
 				end
 			end
Index: pcre/rx_pcre_compiler.e
===================================================================
--- pcre/rx_pcre_compiler.e	(revision 6423)
+++ pcre/rx_pcre_compiler.e	(working copy)
@@ -377,8 +377,7 @@
 		local
 			an_option: INTEGER
 		do
-			STRING_.wipe_out (pattern)
-			pattern.append_string (a_pattern)
+			pattern := a_pattern.twin
 			pattern.append_character ('%U')
 			pattern_count := a_pattern.count
 			pattern_position := 1
Index: support/rx_byte_code.e
===================================================================
--- support/rx_byte_code.e	(revision 6423)
+++ support/rx_byte_code.e	(working copy)
@@ -149,9 +149,7 @@
 		local
 			c: INTEGER
 		do
-			-- TODO: handle unicode.
-			c := a_code \\ 256
-			byte_code.put (c, i)
+			byte_code.put (a_code, i)
 		ensure
 			character_set: character_item (i) = a_code
 		end

Regards,
Ted