From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Subject: Re: Irrelevant src blocks can break noweb expansion
Date: Tue, 12 Dec 2017 08:42:55 +0100
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In-Reply-To: <E943FD29-0356-45E8-BB77-79DE3C785767@ucsd.edu> (Charles Berry's
	message of "Mon, 11 Dec 2017 03:13:41 +0000")
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To: "Berry, Charles" <ccberry@ucsd.edu>
Cc: emacs-org list <emacs-orgmode@gnu.org>

Hello,

"Berry, Charles" <ccberry@ucsd.edu> writes:

> I used to avoid this by `(setq org-babel-use-quick-and-dirty-noweb-expansion t)'.
>
> This illustrates the issue:
>
> #+begin_src org
>
>   ,* abc
>
>   ,#+begin_src R :comment (message "running on empty")
>
>   ,#+end_src
>
>   ,#+begin_src R :noweb yes
>   1
>   ,#+end_src
>
>
> #+end_src
>
> The irrelevant, unnamed, empty src block its consulted via
> org-babel-get-src-block-info.

When? AFAICT, the second block doesn't contain any Noweb reference, so
there is nothing to consult in the first place. IOW, something is
missing in your recipe.

Also, `org-babel-use-quick-and-dirty-noweb-expansion' was intended to
skip properties check when collecting Noweb references from the buffer.
I.e., Org would only trust "name" keyword and ":noweb-ref" header
argument. Since there is no property in your example, I fail to see why
`org-babel-use-quick-and-dirty-noweb-expansion' would apply here.

Regards,

-- 
Nicolas Goaziou