Move cmode +N to cmode +d, so that extensions/m_roleplay can retain cmode +N and maintain a consistent interface with charybdis.

help/opers/cmode

@@ -18,6 +18,8 @@ NO PARAMETERS:
      +r     - Registered users only.  Only users identified to services
               may join.
      +c     - No color.  All color codes in messages are stripped.
+     +d     - No nickchanges. People on the channel will not be able to
+              change nick.
      +g     - Free invite.  Everyone may invite users.  Significantly
               weakens +i control.
      +z     - Op moderated.  Messages blocked by +m, +b and +q are instead
@@ -35,8 +37,6 @@ NO PARAMETERS:
      +T     - Disable notice. All notices to the channel are disallowed.
      +E     - No kicks. Chanops will not be able to use /kick on this
               channel.
-     +N     - No nickchanges. People on the channel will not be able to
-              change nick.
      +G     - Block messages in all caps. Messages that are more than
               50% capital letters will be blocked.
      +J     - Prevent autorejoin on kick. Users will not be able to

help/users/cmode

@@ -18,6 +18,8 @@ NO PARAMETERS:
      +r     - Registered users only.  Only users identified to services
               may join.
      +c     - No color.  All color codes in messages are stripped.
+     +d     - No nickchanges. People on the channel will not be able to
+              change nick.
      +g     - Free invite.  Everyone may invite users.  Significantly
               weakens +i control.
      +z     - Op moderated.  Messages blocked by +m, +b and +q are instead
@@ -35,8 +37,6 @@ NO PARAMETERS:
      +T     - Disable notice. All notices to the channel are disallowed.
      +E     - No kicks. Chanops will not be able to use /kick on this
               channel.
-     +N     - No nickchanges. People on the channel will not be able to
-              change nick.
      +G     - Block messages in all caps. Messages that are more than
               50% capital letters will be blocked.
      +J     - Prevent autorejoin on kick. Users will not be able to

src/chmode.c

@@ -1843,7 +1843,7 @@ struct ChannelMode chmode_table[256] =
   {chm_simple,	MODE_NOREPEAT },	/* K */
   {chm_staff,	MODE_EXLIMIT },		/* L */
   {chm_hidden,	MODE_NOOPERKICK },	/* M */
-  {chm_simple,	MODE_NONICK },		/* N */
+  {chm_nosuch,	0 },			/* N */
   {chm_nosuch,	0 },			/* O */
   {chm_staff,	MODE_PERMANENT },	/* P */
   {chm_simple,	MODE_DISFORWARD },	/* Q */
@@ -1865,7 +1865,7 @@ struct ChannelMode chmode_table[256] =
   {chm_admin,	0 },			/* a */
   {chm_ban,	CHFL_BAN },		/* b */
   {chm_simple,	MODE_NOCOLOR },		/* c */
-  {chm_nosuch,	0 },			/* d */
+  {chm_simple,	MODE_NONICK },		/* d */
   {chm_ban,	CHFL_EXCEPTION },	/* e */
   {chm_forward,	0 },			/* f */
   {chm_simple,	MODE_FREEINVITE },	/* g */

src/messages.tab

@@ -470,7 +470,7 @@ static  const char *  replies[] = {
 /* 446 ERR_USERSDISABLED, */	NULL,
 /* 447 ERR_NOINVITE */       	":Can't send invite to %s (+V set)",
 /* 448 */       NULL,
-/* 449 ERR_NONICK */		"%s :Cannot change nickname while on channel (+N set)",
+/* 449 ERR_NONICK */		"%s :Cannot change nickname while on channel (+d set)",
 /* 450 */       NULL,
 /* 451 ERR_NOTREGISTERED, */    ":%s 451 * :You have not registered",
 /* 452 */       NULL,