applicationsfile extensionsfinder
I tried to open a file with an extension name of adb in Finder (to be precise, PathFinder).
When I clicked the file, vi editor is activated to open the adb file. I didn't do anything with the adb file, so my guess is that vi editor changed the system setup to open it whenever unknown file format is opened.
How can I change this behavior? I want to open TextMate as a default.
This SuperUser post worked for me:
You need to browse to the application that you’d like to use to open these files, and edit its bundle. Right-click the application to handle these file extensions and select Show Package Contents. Navigate to
Contents, and editInfo.plist. You might need Property List Editor, which is part of Apple’s developer tools. If you’re lucky, it’s in XML format. Edit this file’sCFBundleDocumentTypesand add an entry for the extension that you want.
I used TextEdit as the default application to open .bar files. The only thing I did differently was change the XML that went in TextEdit’s Info.plist to:
<dict>
<key>CFBundleTypeExtensions</key>
<array>
<string>bar</string>
</array>
<key>CFBundleTypeIconFile</key>
<string>BarDocument</string>
<key>CFBundleTypeName</key>
<string>Bar Document</string>
<key>CFBundleTypeRole</key>
<string>Document</string>
</dict>
…and then I used LSRefresh.app to refresh TextEdit in the launch services database. Then it worked as you suggested, although it will probably break the code signature of Textedit (and any other signed application) on Lion.
Quit TextMate and open /Applications/TextMate.app/Contents/Info.plist in a text editor.
Remove the highlighted content from line 531 per the screenshot below:
Log out and back in.
Best Answer
Check this answer which points you to RCDefaultApp so you can toy with extensions and default apps.