Function call

lib/matplotlib/tests/test_text.py:860–862

(*args, **kwargs)

    ys = {}  # mapping of strings to where they were drawn in y with draw_tex.

    def call(*args, **kwargs):
        renderer, x, y, s, *_ = args
        ys.setdefault(s, set()).add(y)

    renderer.draw_tex = call
    fig.canvas.draw()