Bug: Expressions mangled when tools are renamed

Here's a small comp where a tool is called "Background" and it has an expression that refers to some other tool's "Background" input via the expression "Merge1.Background.OriginalWidth"

Code: Select all

{
   Tools = ordered() {
      Background = Background {
         CtrlWZoom = false,
         NameSet = true,
         Inputs = {
            GlobalIn = Input { Value = 1, },
            GlobalOut = Input { Value = 200, },
            Width = Input {
               Value = 1280,
               Expression = "Merge1.Background.OriginalWidth",
            },
            Height = Input {
               Value = 720,
               Expression = "Merge1.Background.OriginalHeight",
            },
            ["Gamut.SLogVersion"] = Input { Value = FuID { "SLog2", }, },
            Gradient = Input {
               Value = Gradient {
                  Colors = {
                     [0] = { 0, 0, 0, 1, },
                     [1] = { 1, 1, 1, 1, },
                  },
               },
            },
            Comments = Input { Value = "rename me", },
         },
         ViewInfo = OperatorInfo { Pos = { 388, 133, }, },
      },
      Background1 = Background {
         CtrlWZoom = false,
         Inputs = {
            GlobalIn = Input { Value = 1, },
            GlobalOut = Input { Value = 200, },
            Width = Input { Value = 1280, },
            Height = Input { Value = 720, },
            ["Gamut.SLogVersion"] = Input { Value = FuID { "SLog2", }, },
            Gradient = Input {
               Value = Gradient {
                  Colors = {
                     [0] = { 0, 0, 0, 1, },
                     [1] = { 1, 1, 1, 1, },
                  },
               },
            },
         },
         ViewInfo = OperatorInfo { Pos = { 264, 136, }, },
      },
      Merge1 = Merge {
         CtrlWZoom = false,
         Inputs = {
            Background = Input {
               SourceOp = "Background1",
               Source = "Output",
            },
            PerformDepthMerge = Input { Value = 0, },
         },
         ViewInfo = OperatorInfo { Pos = { 264, 249, }, },
      },
   },
}

Now, if the Background tool is renamed to, say, "Mytool", the automatic renaming inside expressions gets a bit too greedy. It will rename the expression to "Merge1.Mytool.OriginalWidth".

That is correct. It is doing what it should do. Essentially, you are making connection to a 'node' not the nodes name. On change, the expression reads the input tool and displays the tools name in the expression (of course it's probably more complex than that)

Curious, why is that behavior not working for you?

Rony, I think his point is that there are two independent uses of the name "Background" in his example. Renaming the one tool changed both uses, but the 2nd, independent use should have been unaffected because it refers to an external tool that is not being renamed at the same time. In fact, it refers to a property/input of an external tool that probably should never be renamed.

Quick reply.. will get new expression when I get into the office.

Use BGFromImage. This tool generates a background image from resolution of the node that is fed to it.
Pipe the merge to the BGFromImage and you will get a background with dynamic resolution based on the Merge background input resolution.

UPDATE

There does appear to be a problem, however if you name your Background first, then it won't be an issue.
Regardless, something like this should not happen. Thanks for reporting this!

Thanks, I forgot about the BGFromImage fuse.