noweb syntax clashing with shell here document syntax

[Sebastian Miele]

Hello!

The noweb syntax seems to clash with the syntax of here documents in
shell scripts.  In the block like

#+BEGIN_SRC shell :noweb yes
  echo a
  <<A>>
  echo b
#+END_SRC

everything following the line with the the noweb reference does not
get fontified properly.  I suspect that the problem already is known
for a long time.  Is that true?  If yes, what is the status of this
issue?  Is there a known workaround?

At least in ZSH it may very well be the case that a line ending with
'>>' never is valid, except in cases where something like an '<<A'
before it is not an opening of a here document.  So it possibly is
something that could be fixed in sh-script.el.  But I do not know
exactly.

Anybody who already knows more about this?

Best wishes
Sebastian