diff --git a/jsrc/j.h b/jsrc/j.h
index c7348f858..934239833 100644
--- a/jsrc/j.h
+++ b/jsrc/j.h
@@ -1960,7 +1960,7 @@ static inline __attribute__((__always_inline__)) float64x2_t vec_and_pd(float64x
 #define PRISTXFER(z,w) AFLAGORLOCAL(z,PRISTFROMW(w)) PRISTCOMMON(w)
 // transfer pristinity of w to z, destroying w
 #define PRISTXFERF(z,w) AFLAGORLOCAL(z,PRISTFROMW(w)) PRISTCLRF(w)  // use w bit of jtinplace
-#define PRISTXFERAF(z,a) AFLAGORLOCAL(z,PRISTFROMA(w)) PRISTCLRF(a)  // use a bit of jtinplace
+#define PRISTXFERAF(z,a) AFLAGORLOCAL(z,PRISTFROMA(a)) PRISTCLRF(a)  // use a bit of jtinplace
 // same, but with an added condition (in bit 0)
 #define PRISTXFERFIF(z,w,cond)AFLAGORLOCAL(z,AFLAG(w)&(((cond)&SGNTO0(AC(w))&((I)jtinplace>>JTINPLACEWX))<<AFPRISTINEX)) PRISTCLRF(w)
 // transfer pristinity from a AND w to z (not if a==w)
diff --git a/jsrc/vi.c b/jsrc/vi.c
index 0d3c99f97..fc648a5ba 100644
--- a/jsrc/vi.c
+++ b/jsrc/vi.c
@@ -1423,7 +1423,7 @@ F2(jtless){A x=w;I ar,at,k,r,*s,wr,*ws,wt;
  // if nothing special (like sparse, or incompatible types, or x requires conversion) do the fast way; otherwise (-. x e. y) # y
  RZ(x=!ISSPARSE(at)&&HOMO(at,wt)&&TYPESEQ(at,maxtype(at,wt))&&!(AFLAG(a)&AFNJA)?indexofsub(ILESS,x,a):
      repeat(not(eps(a,x)),a));
- // We extracted from a, so mark it non-pristine.  If a was pristine and inplaceable, transfer its pristine status to the result
+ // We extracted from a, so mark it non-pristine.  If a was pristine and abandoned, transfer its pristine status to the result
  PRISTXFERAF(x,a)
  RETF(x);
 }    /* a-.w */
diff --git a/jsrc/viavx.c b/jsrc/viavx.c
index 384f80aec..e4a53432c 100644
--- a/jsrc/viavx.c
+++ b/jsrc/viavx.c
@@ -1247,12 +1247,16 @@ F2(jtless){A x=w;I ar,at,k,r,*s,wr,*ws;
  wr=AR(w); r=MAX(1,ar); I wn=AN(w); I wi,ai; SETIC(w,wi); SETIC(a,ai);
  if(unlikely(ar>1+wr))RCA(a);  // if w's rank is smaller than that of a cell of a, nothing can be removed, return a
  if(unlikely(MIN(ai,wi)==0)&&(ar!=0))RCA(a);  // if either arg has no items, there's nothing to remove, return a, unless atom must become a list
- if(ar==wr+1){  // is just 1 cell of y?
+ if((ar^1)+wr==0){  // taking a single atom from a list?
+// if # y speedup if(ar==wr+1){  // is just 1 cell of y?
   // if y has rank 1 less than x, execute as ((x ~: y) # x) if y is atomic or ((x ~.@-:"yr) # x) if y is an array.  Inplace x.  Use IRS and leave comparison tolerance as set
   J jtipx=(J)(((I)jtinplace&~(JTINPLACEA+JTINPLACEW))+(((I)jtinplace>>1)&JTINPLACEW));  // move input inplace-x flag to inplace-w
-  if(wr==0){RZ(x=jtrepeat(jtipx,ne(a,w),a))   // ((x ~: y) # x), inplaceable on the #
+  RZ(x=jtrepeat(jtipx,ne(a,w),a))   // ((x ~: y) # x), inplaceable on the #
+#if 0   // until x # y has a fast-copy for strings of 1s this isn't so fast
+  if(wr==0){
   }else{IRS2(a,w,0,wr,wr,jtnotmatch,x); RZ(x=jtrepeat(jtipx,x,a))  // ((x ~.@-:"yr) # x), inplaceable on the #
   }
+#endif
  }else{
   // if w's rank is larger than that of a cell of a, reheader w to look like a list of such cells
   if(unlikely((-wr&-(r^wr))<0)){RZ(x=virtual(w,0,r)); AN(x)=wn; s=AS(x); ws=AS(w); k=ar>wr?0:1+wr-r; I s0; PRODX(s0,k,ws,1) s[0]=s0; MCISH(1+s,k+ws,r-1);}  //  use fauxvirtual here
@@ -1287,7 +1291,7 @@ DF2(jtintersect){A x=w;I ar,at,k,r,*s,wr,*ws;
  POPCCT
  RZ(x);
 // obsolete  PRISTXFERAF(x,a)
- if(unlikely(at&BOX)){PRISTCLRF(a) PRISTCLRF(w)} // result is non-pristine, and both a and w also
+ if(unlikely(at&BOX))PRISTXFERAF(x,a)  // the boxes in w cannot get to the result, even though their values participate; so pristinity depends entirely on a
  RETF(x);
 }
 
diff --git a/jsrc/vrep.c b/jsrc/vrep.c
index f8d0cfa2d..035639540 100644
--- a/jsrc/vrep.c
+++ b/jsrc/vrep.c
@@ -123,6 +123,7 @@ static REPF(jtrepbdx){A z;I c,k,m,p;
    I bitstack;  // the bits packed together
    if(n>=2*BSIZE){
     // n>=64, bitpipe0 has the bits to process (and if n>=128 bitpipe1 is in flight).
+    // scaf if all 64 bits are 1s, copy full cachelines to the output.  They will be misaligned, alas
     bitstack=(I)(UI4)_mm256_movemask_epi8(_mm256_cmpeq_epi8(bitpipe00,i1))
             |((I)(UI4)_mm256_movemask_epi8(_mm256_cmpeq_epi8(bitpipe01,i1))<<BSIZE);
    }else{
diff --git a/test/g221.ijs b/test/g221.ijs
index af991fa05..d3e1cc8ce 100644
--- a/test/g221.ijs
+++ b/test/g221.ijs
@@ -128,7 +128,7 @@ end.
 100 test 4 %~ i. 100x
 
 
-4!:55 ;:'b t test xx yy'
+4!:55 ;:'b t test val xx yy'
 
 
 
diff --git a/test/g631.ijs b/test/g631.ijs
index d3ad471d8..35bd92370 100644
--- a/test/g631.ijs
+++ b/test/g631.ijs
@@ -232,7 +232,7 @@ NB. dyad doesn't support prist yet '2' +&.> ckprist 0 1 1 ] 5  NB. scaf
 ~. ckprist 0 1 0 0 ] 5
 ~. ckprist 0 1 0 0 ] 4 5
 '<"0 i. 3' -. ckprist 0 1 2 0 ] 5
-'<"0 i. 3' ([-.-.) ckprist 0 0 ] 5
+'<"0 i. 3' ([-.-.) ckprist (0 , IF64 , 2 0) ] 5  NB. In 32-bit ([-.-.) is not recognized as a compound and it is not seen that a is marked inplaceable for the rightmost -. but it can't get its result to the final output
 |. ckprist 0 1 0 0 ] 5
 |.!.a: ckprist 0 0 0 0 ] 5
 '3' |. ckprist 0 1 0 0 ] 5