Wondering if anyone has any recent experience of using AppleScript's
'with transaction' blocks?
Background: I've been developing test scripts for appscript,
including one that checks appscript's transaction support is working
correctly. As I don't have any transaction-aware applications myself
I wrote a little aete-less test application that implements
'miscbegi' (begin transaction), 'miscendt' (end transaction),
'miscttrm' (abort transaction) event handlers, plus a
'TestTran' (test transaction support) handler to check if it's
working. Before using it to test appscript, I ran the following
AppleScript just to make sure the test app was working correctly:
tell application "AETest"
with transaction
«event TestTran»
end transaction
end tell
What I had expected was that AppleScript would send a 'miscbegi'
event, followed by a 'TestTran' event, followed by a 'miscendt'
event. However, only the 'TestTran' handler actually got called.
So my question is: has anyone tried using AppleScript's 'with
transaction' statement on Tiger with applications that are known to
support it? Did it actually work or was it just ignored, i.e. broken?
I believe some applications define their own 'start/end transaction'
commands in their dictionaries instead of relying on 'with
transaction' blocks; is there a specific reason behind that (e.g.
'with transaction' is known to be problematic), or is it just bad
design by developers who didn't understand how to implement
transaction support correctly?
It's also possible that I missed something when implementing my test
app; I didn't have much luck Googling for documentation. Any pointers
there would also be helpful.
