belatedly migrate stale example definitions
Also bare-bones syntax highlighting for .limg files. Doesn't work when .limg file is first file opened with Vim.
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shell/data.limg
182
shell/data.limg
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@ -1,95 +1,95 @@
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(
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(globals . (
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(hline1 . (fn () (screen y lo hi color)
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(while (< lo hi)
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(pixel screen lo y color)
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(set lo (+ lo 1)))))
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(vline1 . (fn () (screen x lo hi color)
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(while (< lo hi)
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(pixel screen x lo color)
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(set lo (+ lo 1)))))
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(hline . (fn () (screen y color)
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(hline1 screen y 0 (width screen) color)))
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(vline . (fn () (screen y color)
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(vline1 screen y 0 (height screen) color)))
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(brline . (fn () (screen x0 y0 x1 y1 color)
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((fn (dx dy sx sy)
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((fn (err)
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(brline1 screen x0 y0 x1 y1 dx dy sx sy err color))
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(+ dx dy)))
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(abs (- x1 x0))
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(- 0 (abs (- y1 y0)))
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(sgn (- x1 x0))
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(sgn (- y1 y0)))))
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(brline1 . (fn () (screen x y xlast ylast dx dy sx sy err color)
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(while (not (and (= x xlast) (= y ylast)))
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(pixel screen x y color)
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((fn (e2)
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(if (>= e2 dy)
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(set x (+ x sx))
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())
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(if (<= e2 dx)
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(set y (+ y sy)))
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(set err (+ err
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(+
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(if (>= e2 dy)
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dy
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0)
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(if (<= e2 dx)
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dx
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0)))))
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(* err 2)))))
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(read_line_2 . (fn () (keyboard stream)
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((fn (c)
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(if (= c 10)
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stream
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(if (= c 0)
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stream
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(read_line_2 keyboard (write stream c)))))
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(key keyboard))))
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(read_line . (fn () (keyboard)
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(read_line_2 keyboard (stream))))
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(fill_rect . (fn () (screen x1 y1 x2 y2 fill_color)
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(while (< y1 y2)
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(hline1 screen y1 x1 x2 fill_color)
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(set y1 (+ y1 1)))))
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(chessboard . (fn () (screen px)
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(chessboard1 screen px 0 15)))
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(chessboard1 . (fn () (screen px y color)
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(clear screen)
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(while (< y (height screen))
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(chessboard2 screen px y 0 color)
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(set y (+ y px))
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(chessboard2 screen px y px color)
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(set y (+ y px)))))
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(chessboard2 . (fn () (screen px y x color)
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(while (< x (width screen))
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(fill_rect screen x y (+ x px) (+ y px) color)
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(set x (+ x px))
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(set x (+ x px)))))
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(brcircle . (fn () (screen cx cy r color)
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((fn (x y err continue)
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(while continue
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(pixel screen (- cx x) (+ cy y) color)
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(pixel screen (- cx y) (- cy x) color)
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(pixel screen (+ cx x) (- cy y) color)
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(pixel screen (+ cx y) (+ cy x) color)
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(set r err)
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(if (<= r y)
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(set err (+ err (+ 1 (* 2 (set y (+ y 1))))))
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())
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(if (or (> r x) (> err y))
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(set err (+ err (+ 1 (* 2 (set x (+ x 1))))))
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())
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(set continue (< x 0))
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))
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(- 0 r)
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0
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(- 2 (* 2 r))
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1
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)))
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(main . (fn () (screen keyboard)
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(chessboard screen 16)))
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(hline . [(def hline (fn (screen y color)
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(hline1 screen y 0 (width screen) color)))])
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(hline1 . [(def hline1 (fn (screen y lo hi color)
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(while (< lo hi)
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(pixel screen lo y color)
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(set lo (+ lo 1)))))])
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(vline . [(def vline (fn (screen x color)
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(vline1 screen x 0 (height screen) color)))])
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(vline1 . [(def vline1 (fn (screen x lo hi color)
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(while (< lo hi)
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(pixel screen x lo color)
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(set lo (+ lo 1)))))])
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(fill_rect . [(def fill_rect (fn (screen x1 y1 x2 y2 color)
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(while (< y1 y2)
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(hline1 screen y1 x1 x2 color)
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(set y1 (+ y1 1)))))])
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(brline . [(def brline (fn (screen x0 y0 x1 y1 color)
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((fn (dx dy sx sy)
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((fn (err)
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(brline1 screen x0 y0 x1 y1 dx dy sx sy err color))
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(+ dx dy)))
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(abs (- x1 x0))
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(- 0 (abs (- y1 y0)))
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(sgn (- x1 x0))
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(sgn (- y1 y0)))))])
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(brline1 . [(def brline1 (fn (screen x y xlast ylast dx dy sx sy err color)
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(while (not (and (= x xlast) (= y ylast)))
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(pixel screen x y color)
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((fn (e2)
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(if (>= e2 dy)
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(set x (+ x sx))
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())
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(if (<= e2 dx)
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(set y (+ y sy)))
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(set err (+ err
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(+
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(if (>= e2 dy)
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dy
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0)
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(if (<= e2 dx)
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dx
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0)))))
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(* err 2)))))])
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(read_line_2 . [(def read_line_2 (fn (keyboard stream)
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((fn (c)
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(if (= c 10)
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stream
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(if (= c 0)
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stream
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(read_line_2 keyboard (write stream c)))))
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(key keyboard))))])
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(read_line . [(def read_line (fn (keyboard)
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(read_line_2 keyboard (stream))))])
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(chessboard . [(def chessboard (fn (screen px)
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(chessboard1 screen px 0 15)))])
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(chessboard1 . [(def chessboard1 (fn (screen px y color)
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(clear screen)
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(while (< y (height screen))
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(chessboard2 screen px y 0 color)
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(set y (+ y px))
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(chessboard2 screen px y px color)
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(set y (+ y px)))))])
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(chessboard2 . [(def chessboard2 (fn (screen px y x color)
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(while (< x (width screen))
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(fill_rect screen x y (+ x px) (+ y px) color)
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(set x (+ x px))
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(set x (+ x px)))))])
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(brcircle . [(def brcircle (fn (screen cx cy r color)
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((fn (x y err continue)
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(while continue
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(pixel screen (- cx x) (+ cy y) color)
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(pixel screen (- cx y) (- cy x) color)
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(pixel screen (+ cx x) (- cy y) color)
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(pixel screen (+ cx y) (+ cy x) color)
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(set r err)
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(if (<= r y)
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(set err (+ err (+ 1 (* 2 (set y (+ y 1))))))
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())
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(if (or (> r x) (> err y))
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(set err (+ err (+ 1 (* 2 (set x (+ x 1))))))
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())
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(set continue (< x 0))
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))
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(- 0 r)
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0
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(- 2 (* 2 r))
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1
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)))])
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(main . [(def main (fn (screen keyboard)
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(chessboard screen 16)))])
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))
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(sandbox . (brcircle screen 5 5 3 12))
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(sandbox . (fill_rect screen 0 0 8 8 2))
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)
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@ -83,7 +83,7 @@ fn print-cell _in: (addr handle cell), out: (addr stream byte), trace: (addr tra
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# debug helper
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fn dump-cell-at-top-right in-ah: (addr handle cell) {
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var stream-storage: (stream byte 0x200)
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var stream-storage: (stream byte 0x1000)
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var stream/edx: (addr stream byte) <- address stream-storage
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print-cell in-ah, stream, 0/no-trace
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var d1/eax: int <- copy 0
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@ -9,13 +9,15 @@ fn tokenize in: (addr gap-buffer), out: (addr stream cell), trace: (addr trace)
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var token-storage: cell
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var token/edx: (addr cell) <- address token-storage
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{
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#? draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0/screen "a", 7/fg 0/bg
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skip-whitespace-from-gap-buffer in
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var done?/eax: boolean <- gap-buffer-scan-done? in
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compare done?, 0/false
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break-if-!=
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#? draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0/screen "b", 7/fg 0/bg
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# initialize token data each iteration to avoid aliasing
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var dest-ah/eax: (addr handle stream byte) <- get token, text-data
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populate-stream dest-ah, 0x100/max-definition-size
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populate-stream dest-ah, 0x400/max-definition-size
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#
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next-token in, token, trace
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var skip?/eax: boolean <- comment-token? token
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@ -27,7 +29,9 @@ fn tokenize in: (addr gap-buffer), out: (addr stream cell), trace: (addr trace)
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break-if-=
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return
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}
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#? draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0/screen "y", 7/fg 0/bg
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write-to-stream out, token # shallow-copy text-data
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#? draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0/screen "z", 7/fg 0/bg
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loop
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}
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trace-higher trace
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