Snickersnee can hit at a distance once per turn for free

Once per turn, Snickersnee can be used to hit at a distance,
similar to a polearm, without taking any time.

Breaks saves.

src/apply.c

@@ -33,6 +33,7 @@ staticfn int use_stone(struct obj *);
 staticfn int set_trap(void); /* occupation callback */
 staticfn void display_polearm_positions(boolean);
 staticfn void calc_pole_range(int *, int *);
+staticfn boolean snickersnee_used_dist_attk(struct obj *);
 staticfn int use_cream_pie(struct obj *);
 staticfn int jelly_ok(struct obj *);
 staticfn int use_royal_jelly(struct obj **);
@@ -3403,6 +3404,16 @@ could_pole_mon(void)
     return FALSE;
 }
 
+/* was Snickersnee used to attack at distance this turn already? */
+staticfn boolean
+snickersnee_used_dist_attk(struct obj *obj)
+{
+    if (obj && obj == uwep && u_wield_art(ART_SNICKERSNEE)
+        && svc.context.snickersnee_turn == svm.moves)
+        return TRUE;
+    return FALSE;
+}
+
 /* Distance attacks by pole-weapons */
 int
 use_pole(struct obj *obj, boolean autohit)
@@ -3412,6 +3423,7 @@ use_pole(struct obj *obj, boolean autohit)
     coord cc;
     struct monst *mtmp;
     struct monst *hitm = svc.context.polearm.hitmon;
+    boolean freehit = FALSE;
 
     /* Are you allowed to use the pole? */
     if (u.uswallow) {
@@ -3480,8 +3492,25 @@ use_pole(struct obj *obj, boolean autohit)
         if (overexertion())
             return ECMD_TIME; /* burn nutrition; maybe pass out */
         svc.context.polearm.hitmon = mtmp;
+
+        if (snickersnee_used_dist_attk(obj)) {
+            pline_The("blade doesn't reach there!");
+            return ECMD_FAIL;
+        }
+
         check_caitiff(mtmp);
         gn.notonhead = (gb.bhitpos.x != mtmp->mx || gb.bhitpos.y != mtmp->my);
+
+        /* Snickersnee allows one free hit from a distance per turn */
+        if (obj == uwep && u_wield_art(ART_SNICKERSNEE)) {
+            freehit = (svm.moves != svc.context.snickersnee_turn);
+            svc.context.snickersnee_turn = svm.moves;
+            if (freehit && !Deaf) {
+                Soundeffect(se_sword_blade_rings, 100);
+                pline("Shkinng!"); /* /sha-kin!/ */
+            }
+        }
+
         (void) thitmonst(mtmp, uwep);
     } else if (glyph_is_statue(glyph) /* might be hallucinatory */
                && sobj_at(STATUE, gb.bhitpos.x, gb.bhitpos.y)) {
@@ -3523,7 +3552,7 @@ use_pole(struct obj *obj, boolean autohit)
         }
     }
     u_wipe_engr(2); /* same as for melee or throwing */
-    return ECMD_TIME;
+    return freehit ? ECMD_OK : ECMD_TIME;
 }
 
 #undef glyph_is_poleable

src/wield.c

@@ -123,7 +123,7 @@ setuwep(struct obj *obj)
     if (obj) {
         gu.unweapon = (obj->oclass == WEAPON_CLASS)
                        ? is_launcher(obj) || is_ammo(obj) || is_missile(obj)
-                             || (is_pole(obj) && !u.usteed)
+            || (is_pole(obj) && !u.usteed && !is_art(obj, ART_SNICKERSNEE))
                        : !is_weptool(obj) && !is_wet_towel(obj);
     } else
         gu.unweapon = TRUE; /* for "bare hands" message */