FastScript hangs for this script, but Script Debugger does not
  • I wrote the "Eject Volumes and Trash Images" AppleScript below. It ejects all selected volumes in the Finder. If any of those volumes were mounted from a disk image, the script trashes the corresponding image file.

    When I run this from within my script editor, Script Debugger, it works fine and quickly.

    If I launch it from the FastScripts menu, there is a pause of over 20 seconds. spits out this message sometime during the hang:

    29.10.08 29.10 19:02:11  diskarbitrationd daemon Error FastScripts [233]:36611 not responding.

    After the pause, the script does its job as expected.

    Is this a bug in FastScripts?

    set myVolumes to getSelectedVolumes()
    if (count myVolumes) < 1 then return

    set myImages to getImageList()

    repeat with myVolume in myVolumes
    set myImagePath to \"\"
    set myImageFile to null
    repeat with myImage in myImages
    set mountPoint to |mount-point| of item 3 of |system-entities| of myImage
    displayed name of myVolume
    if mountPoint = (\"/Volumes/\" & displayed name of myVolume) then
    set myImagePath to |image-path| of myImage
    set myImageFile to POSIX file myImagePath
    end if
    end repeat

    tell application \"Finder\"
    eject myVolume
    if myImageFile is not null then
    delete file myImageFile
    end try
    end if
    end tell
    end repeat

    on getSelectedVolumes()
    set volumeList to {}
    tell application \"Finder\"
    set mySelection to selection
    repeat with myItem in mySelection
    set myItem to contents of myItem
    -- log class of myItem
    if kind of myItem is \"Volume\" then
    set end of volumeList to myItem
    end if
    end repeat
    end tell
    return volumeList
    end getSelectedVolumes

    on getImageList()
    set diskinfo to do shell script \"hdiutil info -plist\"
    tell application \"System Events\"
    set diskinfo to value of (make new property list item with properties {text:diskinfo})
    set imageList to |images| of diskinfo
    end tell
    return imageList
    end getImageList
  • I have seen similar problems like this when scripting the Finder's disk ejection. I think it's a bug somehow in the Finder or the disk ejection functionality, and I suspect it's something that affects any client (such as FastScripts) that is a background application. I haven't figured out all the details yet, though.

    Some people have found that writing a shell script that communicates with the Finder addresses the problem. Apparently scripting the Finder from the shell script doesn't exhibit the same problem as scripting from FastScripts.

    I wish I had better news about this issue but for now my best suggestion is to try to workaround it somehow with a shell script.

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