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-- static properties of the code
All strings are UTF-8. Bytes within them are not characters.
I try to label byte offsets as _offset, and character positions as _pos.
For example, string.sub should never use a _pos to substring, only an _offset.
Wish I had some static typing here. We're not going to try to write tests to catch issues like this.
-- manual tests
drawing
draw a line, circle, rectangle, square, polygon
select a point and move it
select a point and name it
persistence:
draw a line, circle, rectangle, square, polygon, quit, restart. All the shapes you drew should still be visible.
select a point and name it, quit, restart. Name is still visible.
undo:
naming points
deleting points
moving points
resize:
create a file containing a long line of characters without spaces. try
resizing the window vertically and horizontally, as far as possible.
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