For years now I've had a macro to resize the name column of the front Finder window (in list-view) to fit — with a Hot Key Trigger.
For those who don't know — by double-clicking on the resize-widget between the column-headers, you can cause the leftmost column to resize to fit its longest element.
The macro is faster if the AppleScript is a compiled script, and I have provided one in a zip file along with the Keyboard Maestro macro. (You can open the script in the Script Editor to see what it's doing.)
This macro will only work with Yosemite (10.10.x) at this time.
On my system it's even faster than the Mavericks version was.