Open Radar

 
Summary:
The code:

  [[NSWorkspace sharedWorkspace]
      setIcon:[NSImage imageNamed:NSImageNameFolder]
      forFile:@"/tmp/CocoaTestFolder"
      options:0];

should result in a folder that matches other folders. However, it is "too dark". More specifically, it looks like an alpha-premultiplication bug - the partially transparent pixels around the edge look like they are getting premultiplied on load, and not un-premultiplied on save.

The result: it looks like there is a 1px black stroke around the icon when viewed in Finder.

Steps to Reproduce:
Run the above and observe.

Expected Results:
Icon in finder should match other folders.

Actual Results:
Icon does not match -- all representations are too dark around the edge.

Version:
System Version:	OS X 10.9.1 (13B42)

$ xcodebuild -version
Xcode 5.0.1
Build version 5A2053

Notes:


Configuration:
Same occurs on Snow Leopard and Mavericks 10.9.1

$ otool -L  minimal
minimal:
	/System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa (compatibility version 1.0.0, current version 20.0.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1197.1.1)
	/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 855.11.0)
	/usr/lib/libobjc.A.dylib (compatibility version 1.0.0, current version 228.0.0)
	/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit (compatibility version 45.0.0, current version 1265.0.0)
	/System/Library/Frameworks/Foundation.framework/Versions/C/Foundation (compatibility version 300.0.0, current version 1056.0.0)