Possible bug?

[soegaard]

While reading draw/private/dc I saw a line that may or may not be a bug.

In make-pattern-surface a new surface s is created.
Then a cairo context cr2 is created and a few settings are made using cr2.
But in line 868 the setting is made to cr and not cr2.
I am wondering whether this was on purpose?

https://github.com/racket/draw/blob/master/draw-lib/racket/draw/private/dc.rkt#L868

[soegaard]

Turns out make-pattern-surface despite its name isn't a general function.
It's only used in the code that draws stipples - and it makes sense that stipples are drawn with a round line cap.
While reading from top-to-bottom it was difficult to see that.