Xcode4 plugin showing completion for NSLocalizedString and localizedStringForKey:value:table:

Build the Lin, then the plugin will automatically be installed in ~/Library/Application Support/Developer/Shared/Xcode/Plug-ins.
Relaunch Xcode and Lin will make your life easier.

After installation Enable Lin will appear in Edit menu.

Selecting a line with NSLocalizedString or localizedStringForKey:value:table: will show completion.

Narrowing down the lists by key.

You can modify value directly from the popover window. (.strings file containing key will be automatically updated)

Lin is released under the MIT License, see LICENSE.txt.