[tcltk-perl] RE: scalar($w->getOpenFile)

[Jeff H. <je...@ac...>]

> > The thing is that there is a difference, it's just very, very subtle.  
> > The problem is that the subtle distinctions are very important.
> 
> So tell me what breaks if we do it like this.

With your changes, it all remains correct, but you have to
make those changes only to work around a bug IMO.  You cannot
generally make the statement that all Tcl lists should be
scalar-ized, as that will ruin performance without purpose.

> > Looking into the Tk code ... I'm suspecting bug, as I see that the 
> > variable returned is specifically set to "" (empty string, not empty 
> > list) when cancel is hit.
> 
> So why was it returning a reference to an empty array then?  
> Some bug in the Tcl.pm interface code?

Haven't delved into it yet ...

> > The important thing in getOpenFile is in making sure whatever changes 
> > you do correctly handle files with spaces and multiple files (in case 
> > you pass -multiple 1 to the dialog).
> 
> If you call $mw->getOpenFile in list context it should all 
> work.  And if you provide -multiple 1 you probably know that 
> you must do that.

Yes, that is correct.  I just want to understand the bug that
we are hitting to see that it's clearly a bug, and not a subtle
difference that we have to consider.

Jeff