Quick patch to allow previewing plain text files with unknown extension by simply pressing Spacebar in Mac OS X Finder.

1. Download QLStephen plugin: https://github.com/whomwah/qlstephen
2. Copy file QLStephen.qlgenerator to directory /Library/QuickLook/
3. Optionally, to allow selection of text right from the preview, copy and paste this into terminal:

   defaults write com.apple.finder QLEnableTextSelection -bool true

4. Restart Finder (manually or by typing killall Finder into Terminal)

• Facebook
• Twitter
• LinkedIn
• Pinterest
• Reddit
• Email