Re: header argument :noweb-ref seems can't be resolved

[stardiviner <numbchild@gmail.com>]

The example I original copied from is Emacs org-mode info.
So I rewrite a hand typing content again:
```org
* Test

#+begin_src shell :tangle yes :noweb yes :shebang #!/bin/sh
<<fullest-disk>>
#+end_src

** the mount point of the fullest disk
:PROPERTIES:
:header-args: :noweb-ref fullest-disk
:END:

*** query all mount disks

#+begin_src shell
df \
#+end_src

*** strip the header row

#+begin_src shell
| sed '1d' \
#+end_src

*** output mount point of fullest disk

#+begin_src shell
| awk '{if (u < +$5) {u = +$5; m = $6}} END {print m}'
#+end_src
```

I can preview the first src block with [C-c C-v v] now. It is correct:
```shell
df \
| sed '1d' \
| awk '{if (u < +$5) {u = +$5; m = $6}} END {print m}'
```
I can tangle it with [C-c C-v t] to same file name shell script 
`babel-noweb-ref.sh`.

But just can't run [C-c C-v e] or [C-c C-]. (Reports same error)
Seems org-mode can find correct noweb-ref for tangle but can't for eval.


On 12/18/2017 01:40 AM, Berry, Charles wrote:
>
>> On Dec 17, 2017, at 6:58 AM, stardiviner <numbchild@gmail.com> wrote:
>>
>> I have the following org-mode file content:
>>
>> ```org
>>
>> #+begin_src shell :tangle yes :noweb yes :shebang #!/bin/sh
>> <<fullest-disk>>
>> #+end_src
>>
>> ** the mount point of the fullest disk
>>    :PROPERTIES:
>>    :header-args: :noweb-ref fullest-disk
>>    :END:
>>
>> *** query all mounted disks
>
> When I copied your ECM to a fresh org-buffer and typed `C-c C-v v' with point in the above src block I got an org babel preview buffer with nothing.
>
> Looking closely, I saw a character that was not visible in the gnus buffer from which I copied. Before the: PROPERITES: lines you have 32 160 32.
>
> 160 renders as a light brown underscore when I eval `(char-to-string 160)' on my MacPro, emacs 25.2.1.
>
> 32 is blank. Converting all three to blank. and Running `C-c C-v v' gives the contents of the src blocks under the noweb-ref headline.
>
> HTH,
>
> Chuck
>
>