`eq' package: Added `eq:set'.

* src/guile/skribilo/package/eq.scm: Use `(srfi srfi-1)'.
  (%operators): Added `set'.
  (eq:set): New.  New writer.

* src/guile/skribilo/package/eq/lout.scm: Use `srfi-1'.
  (eq:set): New writer.

git-archimport-id: skribilo@sv.gnu.org--2006/skribilo--devo--1.2--patch-67

2 files changed, 51 insertions, 3 deletions

diff --git a/src/guile/skribilo/package/eq.scm b/src/guile/skribilo/package/eq.scm
index cadc1ba..af2c906 100644
--- a/src/guile/skribilo/package/eq.scm
+++ b/src/guile/skribilo/package/eq.scm
@@ -1,6 +1,6 @@
 ;;; eq.scm  --  An equation formatting package.
 ;;;
-;;; Copyright 2005, 2006  Ludovic Courtès <ludovic.courtes@laas.fr>
+;;; Copyright 2005, 2006, 2007  Ludovic Courtès <ludovic.courtes@laas.fr>
 ;;;
 ;;;
 ;;; This program is free software; you can redistribute it and/or modify
@@ -30,6 +30,7 @@
   :autoload   (skribilo package base) (it symbol sub sup)
   :autoload   (skribilo engine lout) (lout-illustration)
 
+  :use-module (srfi srfi-1)
   :use-module (srfi srfi-39)
   :use-module (ice-9 optargs))
 
@@ -61,7 +62,7 @@
 
 (define %operators
   '(/ * + - = != ~= < > <= >= sqrt expt sum product script
-    in notin apply limit combinations))
+    in notin apply limit combinations set))
 
 (define %symbols
   ;; A set of symbols that are automatically recognized within an `eq' quoted
@@ -330,6 +331,13 @@ a symbol representing the mathematical operator denoted by @var{m} (e.g.,
                   ,@(the-options opts :ident)))
        (body (the-body opts))))
 
+(define-markup (eq:set :rest opts :key (ident #f))
+  (new markup
+       (markup 'eq:set)
+       (ident (or ident (symbol->string (gensym "eq:set"))))
+       (options '())
+       (body (the-body opts))))
+
 
 ;;;
 ;;; Text-based rendering.
@@ -533,6 +541,23 @@ a symbol representing the mathematical operator denoted by @var{m} (e.g.,
                (output among engine)
                (display ")"))))
 
+(markup-writer 'eq:set (find-engine 'base)
+   ;; Take the elements of the set and enclose them into braces.
+   :action (lambda (node engine)
+             (define (printable elem)
+               (if (eq? elem '...)
+                   (symbol "ellipsis")
+                   elem))
+
+             (output "{ " engine)
+             (pair-for-each (lambda (pair)
+                              (let ((elem (printable (car pair))))
+                                (output elem engine)
+                                (if (not (null? (cdr pair)))
+                                    (output ", " engine))))
+                            (markup-body node))
+             (output " }" engine)))
+
 
 
 ;;;
diff --git a/src/guile/skribilo/package/eq/lout.scm b/src/guile/skribilo/package/eq/lout.scm
index 21e8f92..5633ae4 100644
--- a/src/guile/skribilo/package/eq/lout.scm
+++ b/src/guile/skribilo/package/eq/lout.scm
@@ -1,6 +1,6 @@
 ;;; lout.scm  --  Lout implementation of the `eq' package.
 ;;;
-;;; Copyright 2005, 2006  Ludovic Courtès <ludovic.courtes@laas.fr>
+;;; Copyright 2005, 2006, 2007  Ludovic Courtès <ludovic.courtes@laas.fr>
 ;;;
 ;;;
 ;;; This program is free software; you can redistribute it and/or modify
@@ -27,6 +27,7 @@
   :use-module (skribilo lib)
   :use-module (skribilo utils syntax)
   :use-module (skribilo utils keywords) ;; `the-options', etc.
+  :use-module (srfi srfi-1)
   :use-module (ice-9 optargs))
 
 (fluid-set! current-reader %skribilo-module-reader)
@@ -293,5 +294,27 @@
 		     (display " } ")))
 	       (display " } "))))
 
+
+;;;
+;;; Sets.
+;;;
+
+(markup-writer 'eq:set (find-engine 'lout)
+   ;; Take the elements of the set and enclose them into braces.
+   :action (lambda (node engine)
+             (define (printable elem)
+               (if (eq? elem '...)
+                   (symbol "ellipsis")
+                   elem))
+
+             (display " brmatrix { ")
+             (pair-for-each (lambda (pair)
+                              (let ((elem (printable (car pair))))
+                                (output elem engine)
+                                (if (not (null? (cdr pair)))
+                                    (output ", " engine))))
+                            (markup-body node))
+             (display " } ")))
+
 
 ;;; arch-tag: 2a1410e5-977e-4600-b781-3d57f4409b35