* file-truename: Variable binding depth exceeds max-specpdl-size when tangling
@ 2014-08-20 21:19 Grant Rettke
2014-08-20 21:25 ` Aaron Ecay
0 siblings, 1 reply; 2+ messages in thread
From: Grant Rettke @ 2014-08-20 21:19 UTC (permalink / raw)
To: emacs-orgmode@gnu.org
Good afternoon,
While debugging one of my babel documents, I re-read [this]
documentation on `:noweb-ref'.
What I had wanted to do was to define a bunch of source blocks and then
at the end of the heading to tangle them all into a file. This was just
a natural thing to do while /in the flow/ and *not* thinking about the
document structure.
Here is the simplest possible example.
,----
|
| * Demo
| :PROPERTIES:
| :noweb-ref: demo
| :END:
|
| #+begin_src emacs-lisp
| (message "demo")
| #+end_src
|
| #+begin_src emacs-lisp
| (message "this")
| #+end_src
|
| #+begin_src sh :tangle ~/tmp/demo.el :noweb yes
| «demo»
| #+end_src
`----
When you try and tangle this, you get the error:
file-truename: Variable binding depth exceeds
max-specpdl-size
You can increase the size but it will run out:
╭────
│ (setq max-specpdl-size 1500)
╰────
Feel like I have caused an endless loop by asking babel to collect all
references to `demo' and place them inside of a sourceblock, when that
sourceblock itself will be collected. That said, I'm not sure where to
go next and simply moved it up one heading.
Questions:
• What did I do wrong here?
• Am I the only one to ever encounter this?
• Web search did not reveal a lot quickly
Here is the org and emacs version
╭────
│ (org-version nil t)
╰────
╭────
│ Org-mode version 8.2.7c (8.2.7c-25-g1faeb4-elpaplus @
/Users/gcr/.emacs.d/.cask/24.3.1/elpa/org-plus-contrib-20140811/)
╰────
╭────
│ (emacs-version)
╰────
╭────
│ GNU Emacs 24.3.1 (x86_64-apple-darwin13.2.0, Carbon Version 1.6.0
AppKit 1265.2)
│ of 2014-07-03 on orion
╰────
Kind regards,
gcr
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: file-truename: Variable binding depth exceeds max-specpdl-size when tangling
2014-08-20 21:19 file-truename: Variable binding depth exceeds max-specpdl-size when tangling Grant Rettke
@ 2014-08-20 21:25 ` Aaron Ecay
0 siblings, 0 replies; 2+ messages in thread
From: Aaron Ecay @ 2014-08-20 21:25 UTC (permalink / raw)
To: Grant Rettke, emacs-orgmode@gnu.org
Hi Grant,
2014ko abuztuak 20an, Grant Rettke-ek idatzi zuen:
>
> Good afternoon,
>
> While debugging one of my babel documents, I re-read [this]
> documentation on `:noweb-ref'.
>
> What I had wanted to do was to define a bunch of source blocks and then
> at the end of the heading to tangle them all into a file. This was just
> a natural thing to do while /in the flow/ and *not* thinking about the
> document structure.
>
> Here is the simplest possible example.
>
> ,----
> |
> | * Demo
> | :PROPERTIES:
> | :noweb-ref: demo
> | :END:
> |
> | #+begin_src emacs-lisp
> | (message "demo")
> | #+end_src
> |
> | #+begin_src emacs-lisp
> | (message "this")
> | #+end_src
> |
> | #+begin_src sh :tangle ~/tmp/demo.el :noweb yes
> | «demo»
> | #+end_src
> `----
Because the to-be-tangled code block is also under the headline with the
:noweb-ref property, it will try to include itself inside itself,
leading to an infinite regress. Adding a headline before the third code
block fixes the issue.
--
Aaron Ecay
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