Sunsword vs shades

     From the newsgroup:  Sunsword is ineffective against shades.  It
gets a special bonus of double damage vs undead, but since it's not made
of silver it was only doing 1 point of damage against shades.  Make the
bonus-vs-undead attribute override the silver-required criterion.  (If
there's ever a whip or other flimsy weapon which gets a bonus against
some type(s) of thick-skinned monster, its attack will override the skin
thickness in similar fashion.)

doc/fixes34.4

@@ -349,6 +349,7 @@ increase damage bonus applies when kicking while polymorphed into a monster
 if magically removing steed's saddle is fatal, don't leave it saddled in bones
 charging prompt used wrong criteria when deciding whether to list rings
 an orc (or gnome) will respond to #chat if hero is also an orc (or gnome)
+override non-silver vs shades for artifacts which deal extra damage to undead
 
 
 Platform- and/or Interface-Specific Fixes

src/weapon.c

@@ -1,4 +1,4 @@
-/*	SCCS Id: @(#)weapon.c	3.5	2007/02/09	*/
+/*	SCCS Id: @(#)weapon.c	3.5	2007/05/09	*/
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /* NetHack may be freely redistributed.  See license for details. */
 
@@ -291,11 +291,16 @@ struct monst *mon;
 		if (tmp < 0) tmp = 0;
 	}
 
-	if (objects[otyp].oc_material <= LEATHER && thick_skinned(ptr))
+	/* don't need hard material or silver if using an artifact which
+	   gets a special bonus against this target (Sunsword vs shades) */
+	if (tmp && (thick_skinned(ptr) || ptr == &mons[PM_SHADE]) &&
+		(!otmp->oartifact || !spec_dbon(otmp, mon, tmp))) {
+	    if (objects[otyp].oc_material <= LEATHER && thick_skinned(ptr))
 		/* thick skinned/scaled creatures don't feel it */
 		tmp = 0;
-	if (ptr == &mons[PM_SHADE] && objects[otyp].oc_material != SILVER)
+	    if (ptr == &mons[PM_SHADE] && objects[otyp].oc_material != SILVER)
 		tmp = 0;
+	}
 
 	/* "very heavy iron ball"; weight increase is in increments of 160 */
 	if (otyp == HEAVY_IRON_BALL && tmp > 0) {