Re: [PATCH] inline src block results can be removed

["Charles C. Berry" <ccberry@ucsd.edu>]

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On Wed, 12 Nov 2014, Aaron Ecay wrote:

> Hi Chuck,
>
> 2014ko azaroak 12an, "Charles C. Berry"-ek idatzi zuen:
>>
>> Inline src blocks cannot update their results --- causing some of us
>> heaadaches [1].
>>
>> These patches fix that by placing the result of an inline src block in an
>> export snippet with a faux :back-end called 'babel'.
>>
>> So C-c C-c with point on src_R{1+2} will insert `@@babel:3@@'. Updating
>> the contents of the inline src block and retyping C-c C-c will update the
>> snippet. On export, these snippets are rendered using the verbatim
>> transcoder, e.g. \texttt{3} for latex backends.
>>
>> Support for most backends is provided.
>>
>> org-babel-execute-buffer will also update such snippets.
>
> Instead of using an export snippet, which requires per-backend changes,
> you could wrap results in a macro, e.g. {{{results(2)}}}.
>
> Users could customize this macro per-buffer (with the usual #+macro
> keyword) to provide their own formatting of inline results.  You
> could provide the fallback interpretation in the second call to
> ‘org-macro-replace-all’ in ‘org-export-as’ (currently responsible
> for expanding a few macros like {{{author}}} and {{{date}}}).
>
> What do you think of this idea?
>

Aaron,

I like the flexibility that macros would allow.

Some care needs to be taken with commas, but not a big deal.

I don't think the usual #+MACRO works here, as the definition would be 
found in `org-macro-templates' by the first call and existing stuff would 
be expanded instead of being left for babel to remove it. But setting it 
up as a document keyword should work, right?

Don't know if there are other gotchas.

Maybe a limited collection of formats could be set up to support basic 
markup options and the macro could choose amongst them with a second arg 
set by a babel header arg.

I am not quite sure how to marry this to header args. Maybe the :wrap 
header arg should be hijacked for inline src blocks to specify a macro for 
the results.

I mean, does anyone actually use stuff like src_R[:wrap latex]{1+2}? The 
current result cannot be parsed as an export block, AFAICS.

Chuck