I can't figure out why my calls to NSFileWrapper's addRegularFileWithContents:preferredFileName: is setting the files quarantine bit (as seen when using xattr -l on the file) when in the sandbox only. My app saves files in the document bundle so this I think is the method I need to use but the quarantine bit is driving me crazy.
Maybe this is a feature of some sort but my app also chmod's these files as executable and runs them as shell scripts using NSTask. However with the quarantine bit on I get errors from the bash shell (this has been well documented on stack overflow).
Has anyone else experienced this and do you know if these are bugs or features? The only way to work around it for now is to know the shell of the file in advance and not rely on the interpreter at the top of the file (i.e. #!/usr/bin/php) but this an annoying hack to work around a problem that shouldn't be.