redo

src/main/java/puzzle/Export.java

@@ -108,6 +108,13 @@ public record Export() {
          for (var h = grid.hi & MASK_HI & ~cl.hi; h != X; h &= h - 1) stream.accept(Lettrix.from(64 | Long.numberOfTrailingZeros(h), grid.g));
          return stream.build();
       }
+      public char humanAt(int r, int c) {
+         int idx = c * R + r;
+         if (idx < 0 || idx >= 128) return '#';
+         boolean hasLetter = (idx < 64) ? ((grid.lo & MASK_LO & ~cl.lo) & (1L << idx)) != 0 
+                                       : ((grid.hi & MASK_HI & ~cl.hi) & (1L << (idx - 64))) != 0;
+         return hasLetter ? LETTER(grid.g[idx]) : '#';
+      }
       public String[] exportGrid(Slotinfo[] slots, Replacar clueChar, char emptyFallback) {
          var sb = INIT_GRID_OUTPUT_ARR.clone();
          for (var slot : slots) {
@@ -263,13 +270,11 @@ public record Export() {
             }
          }
    
-         // 3) map of only used letter cells (everything else becomes '#')
-         var map = grid.stream().collect(Collectors.toMap(Lettrix::index, Lettrix::human));
-         // 4) render gridv2 over cropped bounds (out-of-bounds become '#')
+         // 3) render gridv2 over cropped bounds (out-of-bounds become '#')
          var gridv2 = new String[Math.max(0, maxR - minR + 1)];
          for (int r = minR, i = 0; r <= maxR; r++, i++) {
             var row = new StringBuilder(Math.max(0, maxC - minC + 1));
-            for (var c = minC; c <= maxC; c++) row.append(map.getOrDefault(r | (c << 3), '#'));
+            for (var c = minC; c <= maxC; c++) row.append(grid.humanAt(r, c));
             gridv2[i] = row.toString();
          }
          // 5) words output with cropped coordinates

src/test/java/puzzle/MarkerTest.java

@@ -335,7 +335,7 @@ public class MarkerTest {
       // arrow cells are NOT in letterAt unless they are also part of a word (unlikely).
       // So (0,0) should be '#'
       assertEquals(1, exported.grid().length);
-      //assertEquals("#TEST", exported.grid()[0]);
+      assertEquals("#TEST", exported.grid()[0]);
    }
    
    @Test