On Wed, Nov 11, 2020 at 09:10:09PM +1300, Sam Crawley wrote:
> > 2) It seems that if (!cmd_mode) you will call finished(false) twice 
> > thus wrongly
> >    reverting the toggles from FuncRequest(LFUN_CHANGES_OUTPUT) in 
> > finished(), right?
> 
> I'm not sure I understand. When cmd_mode == true (which is always the case 
> when run() is invoked via the LFUN),

Maybe I do not understand your intentions then. I thought you introduced 
cmd_mode to distinguish command line case, but now you say it should be always 
true (when called via lfun).
I'll try to explain my concern from a different angle, maybe we'll meet that 
way:
To my knowledge you had two ways to reach 'run' - either (i) normally through 
compare dialog's OK or (ii) via version control history comparison trigger.
And then perhaps (iii) via commandline, which I believe no one ever seriously 
tried and per your comments might not even work due to synchronization issues. 
he (ii) case was hijacking slotOK call in initializeparams to mimick as if the 
comparison was normally launched by user.

Now, your patch is fixing (iii) but at the same time undoing the logic of how 
error() and finished() is used in case (ii) so my concern is that (ii) will be 
broken.
My first thought was that cmd_mode was intended to distinguish (ii) and (iii) 
and let (ii) to stay untouched but the rest of code and our discussion suggest 
otherwise.
Does it make sense now?

Pavel
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