Re: [O] [babel] BUG in call lines

[Marc-Oliver Ihm]

Hi Andreas,

I think the behaviour you have discovered is governed by the constant 
org-babel-block-lob-one-liner-regexp;
However, tweaking this regular expression the right way seems to be really hard 
(impossible):

 
http://stackoverflow.com/questions/546433/regular-expression-to-match-outer-brackets

,so the only option seems to be to write a function to do the matching 
correctly,
but which is probably a big task ...

So as I understand things, I would recommend to stick with the current 
behaviour and use your workaround :-)


with kind regards, Marc


Am 22.03.2012 09:42, schrieb Andreas Leha:
> Hi all,
>
> there seems to be a bug in call lines:
>
> Suppose, I have a src block with two parameters:
>
> #+name: insert_hline
> #+header: :var fulltable=mytable() :var after_row=1
> #+begin_src emacs-lisp
>    (let ((rrr (cons (quote hline) fulltable))
>          (bottomrows (nthcdr after_row fulltable))
>          (toprows (reverse (nthcdr (- (length fulltable) after_row) (reverse 
> fulltable)))))
>      (setcdr rrr bottomrows)
>      (setcdr (nthcdr (- after_row 1) fulltable) rrr)
>      fulltable)
>   #+end_src
>
> As first argument I would like to pass the results of a second
> source block:
> #+name: mytable
> #+begin_src R
>    data.frame(par=1:3, val=1:3)
> #+end_src
>
> #+results: mytable
> | 1 | 1 |
> | 2 | 2 |
> | 3 | 3 |
>
> So, what I do is:
>
> #+call: insert_hline(fulltable=mytable(),after_row=1) :hlines yes :colnames no
>
> #+results: insert_hline(fulltable=mytable()
> | 1 | 1 |
> |---+---|
> | 2 | 2 |
> | 3 | 3 |
>
> But the #+results: name is shortened.
>
> So, the following won't produce another results block, but wrongly update
> the block above:
> #+call: insert_hline(fulltable=mytable(),after_row=2) :hlines yes :colnames no
>
>
> The problem seems to be the ")" within the parameter list stopping
> some parsing.
>
> Note: This works as expected
> #+call: insert_hline[:var fulltable=mytable() :var after_row=1]() :hlines yes 
> :colnames no
>
> #+results: insert_hline[:var fulltable=mytable() :var after_row=1]()
> | 1 | 1 |
> |---+---|
> | 2 | 2 |
> | 3 | 3 |
>
> #+call: insert_hline[:var fulltable=mytable() :var after_row=2]() :hlines yes 
> :colnames no
>
> #+results: insert_hline[:var fulltable=mytable() :var after_row=2]()
> | 1 | 1 |
> | 2 | 2 |
> |---+---|
> | 3 | 3 |
>
>
> Regards,
> Andreas