How to clear Recent Items in OS X?

Question

I want to clear the recent items lists on my computer regardless of what piece of software they are from. I know of the following lists so far:

• Recent Applications, Documents and Servers are all available in the Recent menu in the Apple menu
• Xcode has a recent projects and recent files menu
• Safari has something similar as well
• TextEdit has an Open Recent menu item as well.

How do I clear the items in these menus?

Answer 1

As far as I know, there is no built-in way this can be done, as the recent documents are stored in each application's preference file. However, a little AppleScript and:

tell application "Finder"
    set fls to every file in alias ":Users:ben:Library:Preferences:"
    set AppleScript's text item delimiters to {""}
    repeat with fl in fls
        if name extension of fl is "plist" then
            set fn to name of fl
            set pid to text items 1 thru -7 of fn as text
            if pid = "com.apple.Xcode" then
                try
                    do shell script "defaults delete " & pid & " NSRecentXCFileDocuments"
                    do shell script "defaults delete " & pid & " NSRecentXCProjectDocuments"
                end try
            else
                try
                    do shell script "defaults delete " & pid & " NSRecentDocumentRecords"
                end try
            end if
        end if
    end repeat
end tell

This deals with normal applications and Xcode, but not the Apple menu or other applications which don't follow the pattern.