I have tried every single proposed solution listed in this thread to solve the enigmatic "extremely long name column" bug in Mavericks and none of them have worked for me...
Tried re-installing Mavericks
Upgraded to 10.9.4
Tried the AppleScripts w/ BetterTouchTool
Tried the Option key with finder columns
Setting defaults, adding columns, etc
...and everything else listed all the way back to the start of this thread. The only thing that sort of worked was filling the windows with all the columns I don't want to see in order to force everything left, but this really clutters up my screen with data I don't want to see.
None of it works. Sure, some things may work for some people but I just, once again, started with a fresh new Mavericks 10.9.4 and tried all these things all over again and, nope, nothing. I can have a Finder window open, change the column size to something close to the actual file names (what a concept), set defaults, revert to defaults, all combinations... then close the window or tab, re-open it, and it's all back to ridiculously long name column sizes, over and over.
Is it really that hard to fix? I'm surprised the employees at Apple haven't become more frustrated with this. As a consumer who uses Mavericks 40-80 hours a week easy, I would love to see the following options:
1. AUTO-FIT COLUMNS in Finder (it's so basic)
2. TAG DOTS in their own column (not integrated in the far right of the name column!)
I would think those two things would really help with the overly long name columns, as well as make the name and tag columns more useful. Wish I was a programmer because I would love to fix this issue and share the solution with all others who are frustrated. OS-X is amazing, we just want it to get more amazing.