The patch for dzen-0.9.5 uses assignment, `=`, rather than equality comparison, `==`. As a result, does not show any text in the dzen bar. May be related to #477656.
Created attachment 355456 [details, diff]
New patch file
Patch file that should replace current file. I realize it's trivial, but it's my first bug report/patch :)
Thanks for the patch. It's fixed in 0.9.5-r1.