day13, part2

had a bug in 'recording' the failed lines for Vertical.
debugged at second field in input, which was marking only 1 column as
having 1 smudge

day13/notes.org

@@ -0,0 +1,72 @@
+#+title: Notes
+* part 2 problems
+making example 3 from first field of my input
+
+.#..#..
+.##.###
+..####.
+##.##.#
+#.####.
+#.#.##.
+##.##.#
+..####.
+.##.###
+.#..#..
+##.....
+#.###.#
+##.....
+##.....
+#.###.#
+* the mirror should be between 4 & 5
+but my output is
+horizontal:  Mirror (full false) between 4 and 5. successful lines: map[0:{} 1:{} 2:{} 3:{} 4:{} 6:{} 7:{} 8:{} 9:{} 10:{} 11:{} 12:{} 13:{} 14:{}] ; failed lines: map[5:1]. Max check dist: 4
+
+why is line 4 marked as successful?
+
+** let's turn off verticals, and only look at checks for horizontal 4
+** why do i have 'row 4, mirrored 0'?
+because of 'should check false' i guess
+** now example 3 works, but some other still don't find the mirror
+* another example
+error should be on line 2
+
+...#...####...#..
+.....##.##.##....
+##....######....#
+..#.##.#..#.##...
+##.###.####.###.#
+..###...##...###.
+#####.##..##.####
+#######....######
+###...#.##.#...##
+....###.##.###...
+##.####.##.####.#
+..###...##...###.
+##.#.##....##.#.#
+##..#.#....#.#..#
+##.###.#..#.###.#
+###.#...##...#.##
+..####.####.####.
+** deleting around (8,9)
+.....
+.....
+##..#
+..#..
+##..#
+..##.
+#####
+#####
+#####
+.....
+##..#
+..##.
+##..#
+##..#
+##..#
+#####
+..##.
+
+error should be (2, 3)
+** let's only keep vertical, with Smaller 8
+oh, there should be 'line 3, 1 error', but there also should  be 'line 2, 1 error'
+why don't we have this?