I don't understand something.  When I use the following code:

#declare testfinish = finish {ambient 0.7}

triangle {
    v0 v1 v2
    texture {
       pignment { color Red }
      testfinish
    }
}

 I get this error:
File: jaime.inc  Line: 94
File Context (5 lines):
    v0 v1 v2
    texture {
      pigment { color Red }
      testfinish
Parse Error: No matching } in 'texture', finish identifier found instead

But if I just switch the order of pigment and testfinish, as follows, the scene
renders as I expect:

triangle {
    v0 v1 v2
    texture {
      testfinish
      pigment { color Red }
        }
}

The same is true if I don't use the #declare, but just use the finish keyword
directly:

triangle {
    v0 v1 v2
    texture {
      pigment { color Red }
      finish {ambient 0.7}
        }
}


I've seen this kind of thing before and always "just make it work," but I'd love
to know what's actually happening here.

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