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From: Nick Dokos <nicholas.dokos@hp.com>
To: Eric Schulte <schulte.eric@gmail.com>
Cc: Sebastien Vauban <wxhgmqzgwmuf@spammotel.com>,
	nicholas.dokos@hp.com, emacs-orgmode@gnu.org,
	mail@christianmoe.com
Subject: Re: [ANN] BREAKING CHANGE -- removing #+BABEL file-wide property lines
Date: Fri, 21 Oct 2011 14:09:44 -0400	[thread overview]
Message-ID: <6106.1319220584@alphaville.americas.hpqcorp.net> (raw)
In-Reply-To: Message from Eric Schulte <schulte.eric@gmail.com> of "Fri, 21 Oct 2011 11:37:01 MDT." <8762ji5jr6.fsf@gmail.com>

Eric Schulte <schulte.eric@gmail.com> wrote:

> >
> > 2. Allowing you to pass multiple buffer-wide arguments with :var. This
> > could make a substantive difference in some applications. The 
> > following will work:
> >
> >    #+BABEL: :var euro=1.3791 :var salestax=.15
> >
> > The following will not, since it tries to set the same property:
> >
> >    #+PROPERTY: var euro=1.3791
> >    #+PROPERTY: var salestax=.15
> >
> > If BABEL is dropped for PROPERTY, it would be good for the :var: 
> > property to support multiple arguments (comma-separated would be good 
> > for consistency with passing arguments through the SRCNAME). E.g.:
> >
> >    #+PROPERTY: var euro=1.3791, salestax=.15
> >
> > I think I'd like this better in any case.
> >
> 
> Nice idea.  This same issue with "var" arose when we first started
> allowing header arguments to be specified inside subtree properties.
> I've just implemented your suggestion so the following are now possible.
> 
> #+PROPERTY: var foo=1, bar=2
> #+PROPERTY: cache yes
> #+begin_src emacs-lisp
>   (+ foo bar)
> #+end_src
> 
> #+results[be32e67491d4e92f75769aebe423c20ca01626fe]:
> : 3
> 
> and
> 
> #+begin_src emacs-lisp :var foo="this", bar="that"
>   (concat foo " " bar)
> #+end_src
> 
> #+results[3cde077efa81f1ca24a62ac264dbd5776b6e0054]:
> : this that
> 
> Thanks for the suggestion and I hope the above is a sufficient
> replacement for the now-missing #+BABEL: syntax.
> 

Just to clarify my understanding: on a #+PROPERTY line, you *have* to
say

#+PROPERTY: var a=1, b=2

but in the code block itself, you can say *either*

#+begin_src emacs-lisp :var a=1, b=2
...


*or*

#+begin_src emacs-lisp :var a=1 :var b=2
...

Experimentally, both of these currently work: do you have any plans to
outlaw the last form?

Also, how does the comma-separated list of variable assignments interact
with a language where comma has syntactic significance? I was primarily
thinking of python where e.g. a=[1,2,3] or a=(1,2) is a legal
construct. AFAICT, that never worked in babel[fn:1], so it may not
matter much, but it may be a good idea to come up with a quoting
mechanism so things like that can be added in the future if necessary.

Thanks,
Nick

Footnotes:

[fn:1] I checked in 7.7 to avoid the recent churn with the following
code block


#+begin_src python :var a='(1,2)'
len(a)
#+end_src

and I get 

,----
|   File "<stdin>", line 3
|     a=[1, [\,, 2]]
|                  ^
| SyntaxError: unexpected character after line continuation character
`----

in the org babel error output buffer.

  reply	other threads:[~2011-10-21 18:15 UTC|newest]

Thread overview: 132+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-10-20 19:43 [ANN] BREAKING CHANGE -- removing #+BABEL file-wide property lines Eric Schulte
2011-10-20 20:06 ` Nick Dokos
2011-10-20 20:12   ` Eric Schulte
2011-10-20 20:51     ` Nick Dokos
2011-10-20 21:04       ` Sebastien Vauban
2011-10-20 21:50         ` [RFC] Standardized code block keywords Eric Schulte
2011-10-21  1:52           ` Thomas S. Dye
2011-10-21  2:57             ` Nick Dokos
2011-10-21  7:26               ` Christian Moe
2011-10-21 16:12                 ` Eric Schulte
2011-10-21 19:10                   ` Thomas S. Dye
2011-10-23 12:20                     ` Daniel Bausch
2011-10-23 16:09                       ` Thomas S. Dye
2011-10-24  5:49                         ` Daniel Bausch
2011-10-21  8:17               ` Sebastien Vauban
2011-10-21 16:17                 ` Eric Schulte
2011-10-21 17:37                   ` Sebastien Vauban
     [not found]                     ` <CAGhLh6GXg6nMZ-xdu-EP=YRx7Pznrme2Yq1S0vdc6Yq0tPMxFg@mail.gmail.com>
2011-10-25  6:59                       ` Rainer M Krug
2011-10-21 16:08               ` Eric Schulte
2011-10-21 16:05             ` Eric Schulte
2011-10-21 18:02               ` Thomas S. Dye
2011-10-22 15:19                 ` Eric Schulte
2011-10-21  7:43           ` Torsten Wagner
2011-10-21  8:27             ` Sebastien Vauban
2011-10-21 16:25               ` Eric Schulte
2011-10-21 16:24             ` Eric Schulte
2011-10-21 17:41               ` Sebastien Vauban
2011-10-24  1:06                 ` Torsten Wagner
2011-10-25  6:44               ` Rainer M Krug
2011-10-25  7:24                 ` Jambunathan K
2011-10-25  8:21                 ` Sebastien Vauban
2011-10-21 12:22           ` Nicolas Goaziou
2011-10-21 16:27             ` Eric Schulte
2011-10-21 17:48               ` Eric Schulte
2011-10-21 19:24                 ` Viktor Rosenfeld
2011-10-23 12:42                 ` Daniel Bausch
2011-10-24  7:37                   ` Eric S Fraga
2011-10-24 14:39                     ` Darlan Cavalcante Moreira
2011-10-24  7:47                   ` Sebastien Vauban
2011-10-25  1:30                     ` Eric Schulte
2011-10-25  7:14                       ` Daniel Bausch
2011-10-25  8:14                         ` Sebastien Vauban
2011-10-25 14:44                           ` Eric Schulte
2011-10-25 15:38                             ` Christian Moe
2011-10-25 15:42                             ` Nick Dokos
2011-10-25 16:28                               ` Martyn Jago
2011-10-25 16:49                                 ` Eric Schulte
2011-10-25 17:21                                   ` Nick Dokos
2011-10-26  5:58                                     ` Daniel Bausch
2011-10-26 13:10                               ` Giovanni Ridolfi
2011-10-26 14:41                                 ` Daniel Bausch
2011-10-26 15:04                                   ` Nick Dokos
2011-10-27  5:25                                     ` Daniel Bausch
2011-10-28 16:49                                       ` Eric Schulte
2011-10-28 18:31                                         ` Eric Schulte
2011-10-28 18:40                                           ` Nick Dokos
2011-10-28 18:52                                             ` Eric Schulte
2011-10-28 23:22                                               ` Nick Dokos
2011-10-28 23:39                                                 ` Thomas S. Dye
2011-10-29  2:18                                                   ` Nick Dokos
2011-10-31  7:25                                               ` Daniel Bausch
2011-10-31 19:01                                                 ` Eric Schulte
2011-11-01  6:34                                                   ` C-c C-c not working at end of #+end_src line (was: [RFC] Standardized code block keywords) Daniel Bausch
2011-10-25 14:17                         ` [RFC] Standardized code block keywords Eric Schulte
2011-10-26  5:41                           ` Daniel Bausch
2011-10-26  6:17                             ` Thomas S. Dye
2011-10-26 12:16                             ` Eric Schulte
2011-10-21 18:14           ` Thorsten
2011-10-20 21:34       ` [ANN] BREAKING CHANGE -- removing #+BABEL file-wide property lines Eric Schulte
2011-10-20 21:44         ` suvayu ali
2011-10-20 21:52           ` Eric Schulte
2011-10-20 22:23             ` Suvayu Ali
2011-10-20 21:47         ` Sebastien Vauban
2011-10-20 21:54           ` Eric Schulte
2011-10-20 21:57           ` Nick Dokos
2011-10-20 21:48         ` Nick Dokos
2011-10-20 21:57           ` Eric Schulte
2011-10-20 22:08             ` Nick Dokos
2011-10-20 22:18               ` Eric Schulte
2011-10-21  7:28                 ` Sebastien Vauban
2011-10-21  8:14                   ` Christian Moe
2011-10-21  9:12                     ` Rainer M Krug
2011-10-21 10:47                       ` Christian Moe
2011-10-21 10:59                         ` Rainer M Krug
2011-10-21 11:17                           ` Christian Moe
2011-10-21 11:18                             ` Rainer M Krug
2011-10-21 17:37                     ` Eric Schulte
2011-10-21 18:09                       ` Nick Dokos [this message]
2011-10-22 15:25                         ` Eric Schulte
2011-10-21 18:35                       ` Rainer M Krug
2011-10-21 18:40                         ` Rainer M Krug
2011-10-22  7:58                           ` Christian Moe
2011-10-24  9:44                             ` Rainer M Krug
2011-10-22 15:52                           ` Eric Schulte
2011-10-22 19:07                             ` Christian Moe
2011-10-24 10:10                               ` Rainer M Krug
2011-10-24 11:37                                 ` Christian Moe
2011-10-24 12:11                                   ` Sebastien Vauban
2011-10-24 12:38                                     ` Christian Moe
2011-10-24 15:07                                       ` Nicolas Goaziou
2011-10-24  9:50                             ` Rainer M Krug
2011-10-25  9:35                             ` Sebastien Vauban
2011-10-25 10:06                               ` Rainer M Krug
2011-10-25 10:31                                 ` Sebastien Vauban
2011-10-25 11:47                                   ` Rainer M Krug
2011-10-25 14:13                               ` Eric Schulte
2011-10-26 14:00                                 ` Sebastien Vauban
2011-10-26 15:20                                   ` Eric Schulte
2011-10-22 15:26                         ` Eric Schulte
2011-10-21 20:24                       ` Christian Moe
2011-10-21 21:05                         ` Darlan Cavalcante Moreira
2011-10-22  7:08                           ` Sebastien Vauban
2011-10-22 15:53                           ` Eric Schulte
2011-10-24 18:07                             ` Darlan Cavalcante Moreira
2011-10-31 18:53                               ` Eric Schulte
2011-10-31 20:18                                 ` Samuel Wales
     [not found]                                   ` <87obwwkia5.fsf@gmail.com>
     [not found]                                     ` <CAJcAo8scJXx=3s0f_FDAJXFKW2uh5gFTHwgDRbM6xXohr5ZPzQ@mail.gmail.com>
2011-10-31 22:22                                       ` Samuel Wales
2011-11-01  1:28                                         ` Eric Schulte
2011-11-01 14:26                                           ` Nick Dokos
2011-11-01 15:02                                             ` Nick Dokos
2011-11-01 15:17                                               ` Eric Schulte
2011-11-02 11:12                                                 ` Rainer M Krug
2011-11-02 12:18                                                   ` Nicolas Goaziou
2011-11-02 14:16                                                     ` Rainer M Krug
2011-11-03 18:40                                                   ` Eric Schulte
2011-11-03 18:51                                                     ` Jambunathan K
2011-11-04  9:15                                                       ` Rainer M Krug
2011-11-02 12:57                                                 ` Brian Wightman
2011-11-02 14:18                                                   ` Rainer M Krug
2011-11-03  1:29                                                   ` Bastien
2011-10-20 21:27     ` Christian Moe
2011-10-20 21:32       ` Nick Dokos

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