Feature request for noweb mode that strips references on export

Feature request for noweb mode that strips references on export

[Avdi Grimm]

Presently there are three noweb modes: yes, no, and tangle. I would
like a fourth, which would behave as follows:

On tangle: normal noweb expansion is performed.
On evaluation: normal noweb expansion is performed.
On export: noweb references are STRIPPED. Not just ignored, but the
lines containing the references are removed before export.

The use case is this: I find myself writing articles where I have a
series of code examples like this:

#+begin_src ruby
  <<boilerplate>>
  2 + 2 # =>
#+end_src

The boilerplate is required to make the sample work, but I don't want
to have the boilerplate code show up in the finished article, because
it would be repeated for every example. I also don't want the noweb
reference to show up in the finished article, because it will confuse
readers and syntax highlighters.

Is this possible now, and/or a feature that could be easily added?

Thanks,

-- 
Avdi Grimm
http://avdi.org

Re: Feature request for noweb mode that strips references on export

[Sebastien Vauban]

Hi Avdi,

Avdi Grimm wrote:
> Presently there are three noweb modes: yes, no, and tangle. I would
> like a fourth, which would behave as follows:

Just for the sake of completeness, there is already a fourth option:
"no-export" which expands noweb references during tangling and execution, but
not during weaving (export).

Best regards,
  Seb

-- 
Sebastien Vauban

Re: Feature request for noweb mode that strips references on export

[Avdi Grimm]

On Tue, Jan 31, 2012 at 2:56 AM, Sebastien Vauban
<wxhgmqzgwmuf@spammotel.com> wrote:
> Just for the sake of completeness, there is already a fourth option:

Ah! Looks like I had an older version. Thanks for prompting me to update!

I guess what I'm looking for would be called ":noweb export-strip" or
something like that.

-- 
Avdi Grimm
http://avdi.org

Re: Feature request for noweb mode that strips references on export

[Avdi Grimm]

P.S. It's been a while since I've been on this ML, so if there's a
"right way" to do a feature request please let me know and I'll do it
:-)

On Tue, Jan 31, 2012 at 12:38 PM, Avdi Grimm <groups@inbox.avdi.org> wrote:
> On Tue, Jan 31, 2012 at 2:56 AM, Sebastien Vauban
> <wxhgmqzgwmuf@spammotel.com> wrote:
>> Just for the sake of completeness, there is already a fourth option:
>
> Ah! Looks like I had an older version. Thanks for prompting me to update!
>
> I guess what I'm looking for would be called ":noweb export-strip" or
> something like that.
>
> --
> Avdi Grimm
> http://avdi.org



-- 
Avdi Grimm
http://avdi.org

Re: Feature request for noweb mode that strips references on export

[Eric Schulte]

Avdi Grimm <groups@inbox.avdi.org> writes:

> P.S. It's been a while since I've been on this ML, so if there's a
> "right way" to do a feature request please let me know and I'll do it
> :-)
>

You initial post in this thread was perfect, succinct and complete.

Cheers,

>
> On Tue, Jan 31, 2012 at 12:38 PM, Avdi Grimm <groups@inbox.avdi.org> wrote:
>> On Tue, Jan 31, 2012 at 2:56 AM, Sebastien Vauban
>> <wxhgmqzgwmuf@spammotel.com> wrote:
>>> Just for the sake of completeness, there is already a fourth option:
>>
>> Ah! Looks like I had an older version. Thanks for prompting me to update!
>>
>> I guess what I'm looking for would be called ":noweb export-strip" or
>> something like that.
>>
>> --
>> Avdi Grimm
>> http://avdi.org

-- 
Eric Schulte
http://cs.unm.edu/~eschulte/

Re: Feature request for noweb mode that strips references on export

[Eric Schulte]

Avdi Grimm <groups@inbox.avdi.org> writes:

> Presently there are three noweb modes: yes, no, and tangle. I would
> like a fourth, which would behave as follows:
>
> On tangle: normal noweb expansion is performed.
> On evaluation: normal noweb expansion is performed.
> On export: noweb references are STRIPPED. Not just ignored, but the
> lines containing the references are removed before export.
>
> The use case is this: I find myself writing articles where I have a
> series of code examples like this:
>
> #+begin_src ruby
>   <<boilerplate>>
>   2 + 2 # =>
> #+end_src
>
> The boilerplate is required to make the sample work, but I don't want
> to have the boilerplate code show up in the finished article, because
> it would be repeated for every example. I also don't want the noweb
> reference to show up in the finished article, because it will confuse
> readers and syntax highlighters.
>
> Is this possible now, and/or a feature that could be easily added?
>

I've just added tested and documented such a "strip-export" argument to
:noweb.  Please let me know if it doesn't work as you expected.

Best,

>
> Thanks,

-- 
Eric Schulte
http://cs.unm.edu/~eschulte/

Re: Feature request for noweb mode that strips references on export

[Avdi Grimm]

On Wed, Feb 1, 2012 at 10:21 AM, Eric Schulte <eric.schulte@gmx.com> wrote:
> I've just added tested and documented such a "strip-export" argument to
> :noweb.  Please let me know if it doesn't work as you expected.

I just wanted to let you know I finally tried this out and it works
beautifully. Thank you!

-- 
Avdi Grimm
http://avdi.org

Re: Feature request for noweb mode that strips references on export

[Sean O'Halpin]

Hi,

I've tried to use the new :noweb strip-export feature but I can't work
out the magic combination of headers (working with git head, i.e.
commit 67694297fa0f9b32cf4bfe812ba8a5c5cf4a0859).

Here is a stripped down example:

START OF EXAMPLE

* Example

Define method

#+name: boilerplate
#+begin_src ruby
def hello
  "Hello World"
end
#+end_src

Use it

#+name: example
#+begin_src ruby :exports both :noweb strip-export
«boilerplate»

hello
#+end_src

And here is the result:

#+RESULTS: example
: Hello World

END OF EXAMPLE

On export, I expect this to display the result string "Hello World"
after the code "hello" but get nothing. If I change the :noweb
strip-export to :noweb yes, I do get the output (but also the
boilerplate of course).

Is strip-export meant to work like this? If so, could someone please
post a working example?

Thanks,
Sean

Re: Feature request for noweb mode that strips references on export

[Nick Dokos]

Sean O'Halpin <sean.ohalpin@gmail.com> wrote:

> 
> #+name: example
> #+begin_src ruby :exports both :noweb strip-export
> =ABboilerplate=BB
> 
> hello
> #+end_src
> 

This may have nothing to do with anything (it may even be an artifact of
mailer misbehavior) but is this supposed to be <<boilerplate>>? These
are supposed to be ASCII chars, so if you are using some sort of extended
charset, try changing them and see if that works.

Nick

Re: Feature request for noweb mode that strips references on export

[Daimrod]

"Sean O'Halpin" <sean.ohalpin@gmail.com> writes:

> Hi,
>
> I've tried to use the new :noweb strip-export feature but I can't work
> out the magic combination of headers (working with git head, i.e.
> commit 67694297fa0f9b32cf4bfe812ba8a5c5cf4a0859).
>
> Here is a stripped down example:
>
> START OF EXAMPLE
>
> * Example
>
> Define method
>
> #+name: boilerplate
> #+begin_src ruby
> def hello
>   "Hello World"
> end
> #+end_src
>
> Use it
>
> #+name: example
> #+begin_src ruby :exports both :noweb strip-export
> «boilerplate»
>
> hello
> #+end_src
>
> And here is the result:
>
> #+RESULTS: example
> : Hello World
>
> END OF EXAMPLE
>
> On export, I expect this to display the result string "Hello World"
> after the code "hello" but get nothing. If I change the :noweb
> strip-export to :noweb yes, I do get the output (but also the
> boilerplate of course).
>
> Is strip-export meant to work like this? If so, could someone please
> post a working example?
>
> Thanks,
> Sean

If you don't want to export boilerplate you've to use :exports none in
it.

#+name: boilerplate
#+begin_src ruby :exports none
def hello
  "Hello World"
end
#+end_src

Use it

#+name: example
#+begin_src ruby :exports both :noweb strip-export
<<boilerplate>>

hello
#+end_src

Re: Feature request for noweb mode that strips references on export

[Sean O'Halpin]

On Fri, Mar 30, 2012 at 5:37 PM, Nick Dokos <nicholas.dokos@hp.com> wrote:
> This may have nothing to do with anything (it may even be an artifact of
> mailer misbehavior) but is this supposed to be <<boilerplate>>? These
> are supposed to be ASCII chars, so if you are using some sort of extended
> charset, try changing them and see if that works.
>
> Nick

I've customized =org-babel-noweb-wrap-start= and
=org-babel-noweb-wrap-end= to use guillemets rather than angle
brackets. The noweb stuff is working. It's the lack of the results output
when using strip-export that is bugging me.

Re: Feature request for noweb mode that strips references on export

[Sean O'Halpin]

On Fri, Mar 30, 2012 at 5:39 PM, Daimrod <daimrod@gmail.com> wrote:
> If you don't want to export boilerplate you've to use :exports none in
> it.
>
> #+name: boilerplate
> #+begin_src ruby :exports none
> def hello
>  "Hello World"
> end
> #+end_src
>
> Use it
>
> #+name: example
> #+begin_src ruby :exports both :noweb strip-export
> <<boilerplate>>
>
> hello
> #+end_src
>
Thanks but that's not my problem. When I use :exports both I get the
code but not the results output in my exported HTML.
Do you get the "Hello World" output? If so, it looks like I'll have to
debug my configuration.

Re: Feature request for noweb mode that strips references on export

[Daimrod]

"Sean O'Halpin" <sean.ohalpin@gmail.com> writes:

> On Fri, Mar 30, 2012 at 5:39 PM, Daimrod <daimrod@gmail.com> wrote:
>> If you don't want to export boilerplate you've to use :exports none in
>> it.
>>
>> #+name: boilerplate
>> #+begin_src ruby :exports none
>> def hello
>>  "Hello World"
>> end
>> #+end_src
>>
>> Use it
>>
>> #+name: example
>> #+begin_src ruby :exports both :noweb strip-export
>> <<boilerplate>>
>>
>> hello
>> #+end_src
>>
> Thanks but that's not my problem. When I use :exports both I get the
> code but not the results output in my exported HTML.
> Do you get the "Hello World" output? If so, it looks like I'll have to
> debug my configuration.

No, you're right, I have to execute evaluate the code manually to
produce

#+RESULTS: example
: Hello World

and then it's exported but only if the code isn't evaluated during the
export. It looks like there is a bug with in the ruby part because the
following code works as expected.

----------
* Title
#+name: boilerplate
#+begin_src emacs-lisp :exports none
  (defun hello ()
    "Hello World")
#+end_src

Use it

#+name: example
#+begin_src emacs-lisp :exports both :noweb strip-export
  <<boilerplate>>
  
  (hello)
#+end_src
----------

It exports to

----------
1 Title

Use it

(hello)

Hello World
----------

Re: Feature request for noweb mode that strips references on export

[Eric Schulte]

Nick Dokos <nicholas.dokos@hp.com> writes:

> Sean O'Halpin <sean.ohalpin@gmail.com> wrote:
>
>> On Fri, Mar 30, 2012 at 5:39 PM, Daimrod <daimrod@gmail.com> wrote:
>> > If you don't want to export boilerplate you've to use :exports none in
>> > it.
>> >
>> > #+name: boilerplate
>> > #+begin_src ruby :exports none
>> > def hello
>> >  "Hello World"
>> > end
>> > #+end_src
>> >
>> > Use it
>> >
>> > #+name: example
>> > #+begin_src ruby :exports both :noweb strip-export
>> > <<boilerplate>>
>> >
>> > hello
>> > #+end_src
>> >
>> Thanks but that's not my problem. When I use :exports both I get the
>> code but not the results output in my exported HTML.
>> Do you get the "Hello World" output? If so, it looks like I'll have to
>> debug my configuration.
>> 
>
> Now that I've tried it, I can reproduce it: the final results disappear
> on export.
>
> Nick
>
>

Thanks for bringing this problem to light.  I've just pushed up a fix.

Cheers,

-- 
Eric Schulte
http://cs.unm.edu/~eschulte/

Re: Feature request for noweb mode that strips references on export

[Nick Dokos]

Sean O'Halpin <sean.ohalpin@gmail.com> wrote:

> On Fri, Mar 30, 2012 at 5:39 PM, Daimrod <daimrod@gmail.com> wrote:
> > If you don't want to export boilerplate you've to use :exports none in
> > it.
> >
> > #+name: boilerplate
> > #+begin_src ruby :exports none
> > def hello
> >  "Hello World"
> > end
> > #+end_src
> >
> > Use it
> >
> > #+name: example
> > #+begin_src ruby :exports both :noweb strip-export
> > <<boilerplate>>
> >
> > hello
> > #+end_src
> >
> Thanks but that's not my problem. When I use :exports both I get the
> code but not the results output in my exported HTML.
> Do you get the "Hello World" output? If so, it looks like I'll have to
> debug my configuration.
> 

Now that I've tried it, I can reproduce it: the final results disappear
on export.

Nick

Re: Feature request for noweb mode that strips references on export

[Sean O'Halpin]

On Sat, Mar 31, 2012 at 4:32 PM, Eric Schulte <eric.schulte@gmx.com> wrote:
>
> Thanks for bringing this problem to light.  I've just pushed up a fix.
>
> Cheers,
>
> --
> Eric Schulte
> http://cs.unm.edu/~eschulte/

Thanks! This is really useful.

Regards,
Sean