Trouble opening plist files in text editor

From Finder, I can preview a plist file without any difficulties. For example, using Quick Look with ~/Library/Preferences/com.apple.Safari.RSS.plist I get a nice preview of its contents: However, if I then try to open the file, either with TextEdit, or any other editor (I've tried SublimeText, TextMate, Vim, Nano, and Coda 2 so far), the encoding appears to be off: bplist00Ò_"FixedRefreshesInBackgroundSettings_(com.apple.PreferenceSync.ExcludeSyncKeys ¡ 2]^����������������������������` Here's what it looks like if I open it with TextEdit: I've tried changing the encoding in Sublime Text and other apps, but that doesn't help. Any thoughts? I'm running 10.8.4.