Inconsolata for Powerline Mod
The original version of Inconsolata as well as patched version provided by powerline developers does not have glyphs around U+2502 for displaying tmux split line properly. In some systems, the fallback font has appropriate corresponding glyphs (eg. linux) while in others it does not (eg. OS X). Therefore, this font is patched to yield a pleasant display. Hope it helps. :)
Before patching:
After patching: