Use the Plan 9 version of the world.

troff/font/devutf/charlib/?

@@ -0,0 +1,12 @@
+/build_X263a{
+    pop
+    gsave
+    currentpoint translate 7.44 7.68 scale ptsize dup scale
+    31 32 true [31 0 0 -32 2 31]
+    {< 0007c000 007ff800 01c00600 03000180 060000c0 08000060 18000030 30000018
+    20000008 4000000c 40183004 c0183006 80183002 80000002 80000002 80000002
+    860000c2 8e0000e2 8e0000e2 9a0001e2 c3000186 41800304 41c0060c 60f01c08
+    303ff818 101fe030 08000060 040000c0 03000180 01c00700 007cfc00 000fe000
+    >} imagemask
+    grestore
+} def

troff/font/devutf/charlib/RC

@@ -1,13 +1,36 @@
-/build_RC {
+%
+% This stuff has gotten terribly complicated - sorry.
+%
+
+currentdict /bvbbox known not {/bvbbox [0 0 0 0 0 0 0] def} if
+
+/build_rc {
     pop
-    size 4 div /side exch def
-    currentpoint
-    newpath
-    moveto
-    0 side 1.5 mul rmoveto
-    0 side rlineto
-    side 2.5 mul 0 rlineto
-    0 side neg rlineto
-    closepath
-    fill
+    gsave
+	currentpoint translate newpath
+	bvbbox 6 get size ne {
+	    gsave
+		initgraphics
+		scaling scaling scale
+		0 0 moveto
+		(\357) false charpath flattenpath pathbbox 0 0 size bvbbox astore pop
+		0 1 idtransform dup mul exch dup mul add sqrt dup
+		bvbbox 1 get add bvbbox 1 3 -1 roll put
+		bvbbox 3 get exch sub bvbbox 3 3 -1 roll put
+		bvbbox 2 get bvbbox 0 get sub bvbbox 4 3 -1 roll put
+		bvbbox 2 get bvbbox 0 get add 2 div bvbbox 5 3 -1 roll put
+	    grestore
+	} if
+	bvbbox 2 get bvbbox 1 get moveto
+	bvbbox 2 get bvbbox 3 get lineto
+	bvbbox 5 get bvbbox 4 get 8 mul sub dup bvbbox 3 get lineto
+	bvbbox 1 get lineto closepath clip newpath
+	0 0 moveto (\357) show
+	bvbbox 5 get bvbbox 3 get moveto
+	bvbbox 4 get dup dup
+	8 mul neg 0 rlineto
+	0 exch neg rlineto
+	8 mul 0 rlineto
+	closepath clip eofill
+    grestore
 } def

troff/font/devutf/charlib/rH

@@ -1,4 +1,4 @@
-/build_rH {
+/build_rh {
 pop
 gsave
 size .0022 mul dup scale
@@ -29,7 +29,7 @@ currentpoint translate
 19 39 lineto
 16 47 lineto
 15 66 lineto
-fill
+stroke
 
 65 60 moveto
 65 111 lineto
@@ -139,7 +139,7 @@ fill
 73 43 lineto
 67 52 lineto
 65 60 lineto
-fill
+stroke
 
 396 180 moveto
 396 188 lineto
@@ -151,7 +151,7 @@ fill
 411 173 lineto
 400 173 lineto
 396 180 lineto
-fill
+stroke
 
 grestore
 } def