diff --git a/chameleonic.p8 b/chameleonic.p8
index ad52cb0..eeb517c 100644
--- a/chameleonic.p8
+++ b/chameleonic.p8
@@ -22,7 +22,6 @@ function names(root)
 end
 
 function _doall(x)
- 
  for n in names(x) do
   for mod in all(modules) do
    local f=mod[n]
@@ -32,13 +31,12 @@ function _doall(x)
 end 
 
 -- source: https://www.lexaloffle.com/bbs/?pid=78990
-gaps={57,23,10,4,1}
+gaps=split"57,23,10,4,1"
 --{701,301,132,57,23,10,4,1}
 function shellsort(a)
  for gap in all(gaps) do
   for i=gap+1,#a do
-   local x=a[i]
-   local j=i-gap
+   local x,j=a[i],i-gap
    while j>=1 and a[j].key>x.key do
     a[j+gap]=a[j]
     j-=gap
@@ -57,36 +55,36 @@ function linefill(ax,ay,bx,by,r,c)
  local n=min(abs(dx),abs(dy))/d
  d*=sqrt(n*n+1)
  if(d<0.001) return
-  local ca,sa=dx/d,-dy/d
+ local ca,sa=dx/d,-dy/d
    
-  -- polygon points
-  local s={
-   {0,-r},{d,-r},{d,r},{0,r}
-  }
-  local u,v,spans=s[4][1],s[4][2],{}
-  local x0,y0=ax+u*ca+v*sa,ay-u*sa+v*ca
-  for i=1,4 do
-   local u,v=s[i][1],s[i][2]
-   local x1,y1=ax+u*ca+v*sa,ay-u*sa+v*ca
-   local _x1,_y1=x1,y1
-   if(y0>y1) x0,y0,x1,y1=x1,y1,x0,y0
-   local dx=(x1-x0)/(y1-y0)
-   if(y0<0) x0-=y0*dx y0=-1
-   local cy0=y0\1+1
-   -- sub-pix shift
-   x0+=(cy0-y0)*dx
-   for y=y0\1+1,min(y1\1,127) do
-    -- open span?
-    local span=spans[y]
-    if span then
-     rectfill(x0,y,span,y)
-    else
-     spans[y]=x0
-    end
-    x0+=dx
+ -- polygon points
+ local s={
+  {0,-r},{d,-r},{d,r},{0,r}
+ }
+ local u,v,spans=s[4][1],s[4][2],{}
+ local x0,y0=ax+u*ca+v*sa,ay-u*sa+v*ca
+ for i=1,4 do
+  local u,v=s[i][1],s[i][2]
+  local x1,y1=ax+u*ca+v*sa,ay-u*sa+v*ca
+  local _x1,_y1=x1,y1
+  if(y0>y1) x0,y0,x1,y1=x1,y1,x0,y0
+  local dx=(x1-x0)/(y1-y0)
+  if(y0<0) x0-=y0*dx y0=-1
+  local cy0=y0\1+1
+  -- sub-pix shift
+  x0+=(cy0-y0)*dx
+  for y=y0\1+1,min(y1\1,127) do
+   -- open span?
+   local span=spans[y]
+   if span then
+    rectfill(x0,y,span,y)
+   else
+    spans[y]=x0
    end
-   x0,y0=_x1,_y1
+   x0+=dx
   end
+  x0,y0=_x1,_y1
+ end
 end
 
 function _apply(x,ts,a)