is within - a syntax bug?

[Doug Lerner]

This results in a syntax error that "what is to the left of within" is not a
point:

  addToStatus "within: " & the mouseLoc is within the rect of the target
into withinCheck


But rewriting it this way works:

  put the mouseLoc is within the rect of the target into withinCheck
  addToStatus "within: " & withinCheck

A compiler bug?

doug