On Windows 7, trying to execute a non-existent program as follows...��
�� �� OSProcess command: 'notepadXX.exe'
...causes an MNU in��ExternalWindowsOSProcess>>value. This is due to writing to stderr where "self initialStdErr" returns nil, seemingly due to ExternalWindowsOSProcess missing the��#initialize and #setDefaults of ExternalUnixOSProcess.
Now I understand that stderr is problematic in general on Windows.��
The following statements...
�� �� OSProcess thisOSProcess stdErr nextPutAll: 'test'.���� FileStream stderr nextPutAll: 'test'.
...both work fine on OSX,��but fail on Windows with the error "FileWriteError: File stderr is closed"
The result is the same on both Pharo 4 and Squeak 4.5.��
(Squeak also brings up a bottom message bar saying...��"# To disable: F2 -> 'debug options' -> 'show console on errors'��WARNING: Manufactured file handle detected!")
Pharo has a workaround for the general issue by creating a disk file named��'stderr' as follows...
�� �� FileStream class >> standardIOStreamNamed: moniker forWrite: forWrite
self flag: #todo. "This is an ugly hack, while waiting for a real fix for windows. There ��several problems with this approach, but it allow us to run tests, etc."
Smalltalk os isWin32��
ifTrue: [��
[ ^ MultiByteFileStream forceNewFileNamed: moniker asString ]
on: CannotDeleteFileException do: [
"HACK: if the image is opened a second time windows barks about the already opened locked file"
^ MultiByteFileStream forceNewFileNamed: moniker asString, '_', (Random new nextInt: SmallInteger maxVal) asString �� ]].
So to address the MNU for OSProcess?��
1. wrap the "self initialStdErr" with an #ifNil: check
2. Squeak adopt the Pharo workaround, then lean on that to define #initialize and #setDefaults for��ExternalWindowsOSProcess��
3. real fix for stderr (outside of OSProcess?)��
4. wont fix
5. other?
Note that this is not a burning issue for me. I am just cleaning out old issues that I logged in the Pharo bug tracker.�� If the answer if (4.) ��I'll just close the issue [1].
For both Squeak and Pharo, I loaded��ConfigurationOfOSProcess-ThierryGoubier.33��from...��
�� �� MCHttpRepository
(Perhaps someone with access can copy that to the main repo)
cheers -ben