Comment 6 for bug 272792

Here's a possible patch to allow ellipsis into the pathbar button labels by forcing a maximum label width (and a tooltip to show the entire label). The solution provided in this patch isn't great (it forcibly limits the width of the button), it's a step in the right direction. (The patch has also been attached to the upstream bug.)

The patch could be improved to eliminate the hardcoded width (200px), to allow the label to be as wide as possible without the pathbar vanishing entirely, but I'm not quite sure how to approach that yet.