... That is, put a little shell script in the application bundle, and invoke
it (in Release, though not Debug where it interferes with Xcode debugging)
See commit 07661c186f7e8e6d978fa35485d65364b96dfb3a
The shell nulls the environment variable DYLD_LIBRARY_PATH and then executes
the main program.
This is needed because changes to DYLD_LIBRARY_PATH during the main program's
run fail to affect the loading of dynamic libraries afterward.
We need null in DYLD_LIBRARY_PATH to make absolute paths to libraries take
priority.
More info:
Documentation of workings of the macOS dynamic loader
https://developer.apple.com/library/content/documentation/DeveloperTools/Conceptual/DynamicLibraries/100-Articles/DynamicLibraryUsageGuidelines.html
The same problem and solution is discussed here
https://stackoverflow.com/questions/6713692/problems-with-using-setenv-and-then-making-the-dlopen-call
It is claimed there that Firefox did the same trick with a shell, which I do
not observe in my version, but GIMP 2.8.16 does this, as I can see by examining
package contents
Also note the mention in this commit's comments (where the script was removed
because bug543's fix left it unused), that the script also used to
interfere with signing. I hope that there will be a way around that.
98186b9317adf842e0469fe98175b55da31d3210
... What commit 776e4dfdaba198b0bd5a4eec3df56d67065e824b was supposed to do,
but the setting was changed in the expat library only, not Audacity.
This should prevent foolish mistakes like that fixed in the previous commit!
...no actions reimplemented to them yet.
Later commits will move special cases one at a time from TrackPanel, preserving
all click and drag capabilities at each step. With a few exceptions, but those
lost abilities are restored in yet later commits. (Ctrl+Click on the Label
track being one.)
AudacityException is an abstract base class for exceptions generated by
Audacity.
GuardedCall wraps any function (usually a lambda) in an appropriate catch
block.
It can also accept a second function that defines a catch block action, which
can rethrow or return a value for the GuardedCall.
It can also accept a third function, that defines another, delayed action that
executes in the main thread at idle time if the second function intercepts an
AudacityException and completes without rethrow.
Defaults for the second function simply return void or false. Default for the
third function invokes a virtual method of AudacityException, which for
subclass MessageBoxException, displays a message box.
... At startup, spawn a copy process in main() and crash it at once. The
child process continues. (The fix was ineffective when the parent continued
and the child crashed.)
Re-activiation of the application is also needed or else the windows are
hidden behind other applications.
Another sleep when closing a project, to fix occurrences of the bug caused by
closing of a project window without saving changes.
