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-rw-r--r--src/guile/skribilo/package/eq/lout.scm27
1 files changed, 15 insertions, 12 deletions
diff --git a/src/guile/skribilo/package/eq/lout.scm b/src/guile/skribilo/package/eq/lout.scm
index 16d4513..cc4b3bf 100644
--- a/src/guile/skribilo/package/eq/lout.scm
+++ b/src/guile/skribilo/package/eq/lout.scm
@@ -73,6 +73,11 @@
:after " } }")
+;; Scaled parenthesis. We could use `pmatrix' here but it precludes
+;; line-breaking within equations.
+(define %left-paren "{ Base @Font @VScale \"(\" }")
+(define %right-paren "{ Base @Font @VScale \")\" }")
+
(define (div-style->lout style)
(case style
((over) "over")
@@ -91,13 +96,11 @@
(cadr args)))
(precedence (operator-precedence sym))
- ;; Note: We could use `pmatrix' here but it precludes line-breaking
- ;; within equations.
(open-par (if parentheses?
- `(if need-paren? "{ @VScale ( }" "")
+ `(if need-paren? %left-paren "")
""))
(close-par (if parentheses?
- `(if need-paren? "{ @VScale ) }" "")
+ `(if need-paren? %right-paren "")
"")))
`(markup-writer ',(symbol-append 'eq: sym) (find-engine 'lout)
@@ -175,9 +178,9 @@
(second (cadr body))
(parentheses? (equation-markup? first)))
(display " { { ")
- (if parentheses? (display "("))
+ (if parentheses? (display %left-paren))
(output first engine)
- (if parentheses? (display ")"))
+ (if parentheses? (display %right-paren))
(display ,(string-append " } " lout-name " { "))
(output second engine)
(display " } } "))
@@ -185,15 +188,15 @@
"wrong number of arguments"
body))))))
-(binary-lout-markup-writer expt "sup")
-(binary-lout-markup-writer in "element")
+(binary-lout-markup-writer expt "sup")
+(binary-lout-markup-writer in "element")
(binary-lout-markup-writer notin "notelement")
(markup-writer 'eq:apply (find-engine 'lout)
:action (lambda (node engine)
(let ((func (car (markup-body node))))
(output func engine)
- (display "(")
+ (display %left-paren)
(let loop ((operands (cdr (markup-body node))))
(if (null? operands)
#t
@@ -202,7 +205,7 @@
(if (not (null? (cdr operands)))
(display ", "))
(loop (cdr operands)))))
- (display ")"))))
+ (display %right-paren))))
(markup-writer 'eq:limit (find-engine 'lout)
@@ -214,9 +217,9 @@
(output var engine)
(display " --> ")
(output limit engine)
- (display " } } (")
+ (display (string-append " } } @VContract { " %left-paren))
(output body engine)
- (display ") "))))
+ (display (string-append %right-paren " } ")))))
(markup-writer 'eq:combinations (find-engine 'lout)
:action (lambda (node engine)