#+begin_src latex
Abc<<abc-d>>
#+end_src
#+name: abc-d
#+begin_src latex
Def
#+end_src
#+begin_src latex :noweb yes :tangle test.tex
<<abc>>
#+end_src
#####
Tangling with *org-babel-use-quick-and-dirty-noweb-expansion* set to nil gives
#####
while tangling with *org-babel-use-quick-and-dirty-noweb-expansion* set to t gives
I'd be very happy if this bug could be tracked down.
Thanks very much in advance !
Cheers,
Nicolas