[I hate seeing weakly unedited posts, and my apologies for
the earlier post.]
[Yegappan confirmed that in
:file <partial><C-D>
<C-D> doesn't search for files using directories set in
the 'path' option.]
But the definition of c_CTRL-D is:
"List names that match the pattern in front of the cursor."
So <C-D> is not only for file-name completion -- it is for
command-line completion -- a good example is :help <partial><C-D>.
So since :find uses 'path', shouldn't <C-D> acting as command-line
completion use 'path' for completing :find <partial><C-D>?
--Suresh