Bug report

Only the first bar in barplot has border when edgecolor is a single value.

Bug summary

Code for reproduction

import matplotlib.pyplot as plt


def main():

    fig = plt.figure()
    ax = plt.gca()

    data = list(range(5, 10))

    ax.bar(data, data, width=0.5, align="edge", linewidth=2,
           edgecolor="k", facecolor="m")

    plt.show()


if __name__ == '__main__':
    main()

Actual outcome

Expected outcome

I can work around the issue by specifying a list of edgecolors and linewidths for each bar. Specifying only the list of linewidths for each bar and leaving one value for the edgecolor would only show a border of the first bar due to this code in the Patch.draw:

        lw = self._linewidth
        if self._edgecolor[3] == 0:
            lw = 0

Matplotlib version

• Operating system: Linux
• Matplotlib version: 2.1.0
• Matplotlib backend (print(matplotlib.get_backend())): TkAgg
• Python version: Python 3.6.2

I installed matplotlib using conda. But I am not sure from which channel.