[empathy] Allow to enter an email address as ICQ ID (#645014)

[Guillaume Desmottes <gdesmott src gnome org>]

commit 7980966fd3bb38fde70946c057704b1b5f409968
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Thu Mar 17 14:03:02 2011 +0100

    Allow to enter an email address as ICQ ID (#645014)

 libempathy-gtk/empathy-account-widget.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/libempathy-gtk/empathy-account-widget.c b/libempathy-gtk/empathy-account-widget.c
index f4d6f7e..ab34763 100644
--- a/libempathy-gtk/empathy-account-widget.c
+++ b/libempathy-gtk/empathy-account-widget.c
@@ -169,8 +169,11 @@ static guint signals[LAST_SIGNAL] = { 0 };
 
 /* UIN is digital according to the unofficial specification:
  * http://iserverd.khstu.ru/docum_ext/icqv5.html#CTS
- * 5 digits minimun according to http://en.wikipedia.org/wiki/ICQ#UIN */
-#define ICQ_USER_NAME     "(["DIGIT"]{5,})"
+ * 5 digits minimum according to http://en.wikipedia.org/wiki/ICQ#UIN
+ * According to an user, we can also provide an email address instead of the
+ * ICQ UIN. */
+#define ICQ_USER_NAME     "((["DIGIT"]{5,})|"EMAIL_LOCALPART"@"HOST")"
+
 /* Based on http://www.ietf.org/rfc/rfc2812.txt (section 2.3.1) */
 #define IRC_SPECIAL       "_\\[\\]{}\\\\|`^"
 #define IRC_USER_NAME     "(["ALPHA IRC_SPECIAL"]["ALPHADIGITDASH IRC_SPECIAL"]*)"