When you have selected a text, source, html file, etc., in Finder and press spacebar, a quick view will come up showing content. When the file extension isn't one that is recognized, it will instead show information like name, extension, file size.. How do I edit how it responds to different file types? Can I make it show content for binary files as if they are text?
You can install Quick Look plugins by moving them to ~/Library/QuickLook/.
QLStephen adds support for plain text files with arbitrary extensions or without an extension. It also supports some binary formats and executable scripts, but not compiled binaries.
qlcolorcode adds syntax highlighting for source code files.