bug#17502: R6RS `library' form must have exports before imports

[Mark H Weaver <mhw@netris.org>]

Taylan Ulrich Bayirli/Kammer <taylanbayirli@gmail.com> writes:

> The R6RS `library' form requires the (export ...) list to appear
> before the (import ...) list.

Indeed, good catch!

> Here's a corresponding documentation patch against master/3be43fb:

We will want to apply this to stable-2.0.

> From 7900da779f1ab267481ad1a08a0547083936d11f Mon Sep 17 00:00:00 2001
> From: Taylan Ulrich B <taylanbayirli@gmail.com>
> Date: Thu, 15 May 2014 22:55:40 +0200
> Subject: [PATCH] R6RS library documentation fix
>
> * doc/ref/api-modules.texi: In the R6RS `library' form, exports must
>   appear before imports.

The changelog should briefly describe the changes made.  Also, when
making changes to texi files, our convention is to include the node name
in parentheses before the colon.  So maybe something like this:

* doc/ref/api-modules.texi (R6RS Libraries): Move 'export' before
  'import' in the example library form, as required by the R6RS.

> ---
>  doc/ref/api-modules.texi | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/doc/ref/api-modules.texi b/doc/ref/api-modules.texi
> index 286a37d..47171c6 100644
> --- a/doc/ref/api-modules.texi
> +++ b/doc/ref/api-modules.texi
> @@ -584,8 +584,8 @@ expression:
>  
>  @lisp
>    (library (mylib (1 2))
> -    (import (otherlib (3)))
> -    (export mybinding))
> +    (export mybinding)
> +    (import (otherlib (3))))
>  @end lisp
>  
>  is equivalent to the module definition:
> @@ -597,6 +597,8 @@ is equivalent to the module definition:
>      #:export (mybinding))
>  @end lisp
>  
> +Note that exports must appear before imports in the `library' form.
> +

I don't think we need to mention this.  IMO the R6RS is quite clear, as
Dale pointed out.

    Thanks!
      Mark