Preview any plain text file using OS X QuickLook
Use QuickLook to view any plain text, with or without an extension.
QLStephen Plugin
Download the QLStephen plugin: Latest Release
Copy QLStephen.qlgenerator to
/Library/QuickLook/
Enable Selection in Finder
defaults write com.apple.finder QLEnableTextSelection -bool TRUE; qlmanage -r
Enable Selection in All Apps
defaults write -g QLEnableTextSelection -bool TRUE; qlmanage -r
QuickLook keyboard shortcut
⌘Y
Known to work on OS X Yosemite