X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;ds=sidebyside;f=scm%2Flily.scm;h=b8e3cfc0774cef9db2dc612e952a2163f2f436bc;hb=d983c03ae234308c7b284f42e00aff40fd93e14c;hp=b364d2f20c358caaa38bc0263363fef9d52a8105;hpb=d5fce41ff513cba5e4775ebbdfe888dd13464b80;p=lilypond.git

diff --git a/scm/lily.scm b/scm/lily.scm
index b364d2f20c..b8e3cfc077 100644
--- a/scm/lily.scm
+++ b/scm/lily.scm
@@ -1,19 +1,15 @@
-;;;; lily.scm -- implement Scheme output routines for TeX and PostScript
+;;;; lily.scm -- toplevel Scheme stuff
 ;;;;
 ;;;;  source file of the GNU LilyPond music typesetter
 ;;;; 
 ;;;; (c)  1998--2004 Jan Nieuwenhuizen <janneke@gnu.org>
 ;;;; Han-Wen Nienhuys <hanwen@cs.uu.nl>
 
-;;; Library functions
-
 
 (if (defined? 'set-debug-cell-accesses!)
     (set-debug-cell-accesses! #f))
 
-;; ugh, need this for encoding.scm test
-;; srfi-13 overrides string->list
-(define-public plain-string->list string->list)
+;;(set-debug-cell-accesses! 5000)
 
 (use-modules (ice-9 regex)
 	     (ice-9 safe)
@@ -22,8 +18,13 @@
 	     (srfi srfi-13)) ; strings
 
 
+;; my display
 (define-public (myd k v) (display k) (display ": ") (display v) (display ", "))
 
+(define-public (print . args)
+  (apply format (cons (current-output-port) args)))
+
+
 ;;; General settings
 ;;; debugging evaluator is slower.  This should
 ;;; have a more sensible default.
@@ -34,12 +35,12 @@
       (debug-enable 'backtrace)
       (read-enable 'positions)))
 
-(define-public (line-column-location line col file)
+(define-public (line-column-location file line col)
   "Print an input location, including column number ."
   (string-append (number->string line) ":"
 		 (number->string col) " " file))
 
-(define-public (line-location line col file)
+(define-public (line-location  file line col)
   "Print an input location, without column number ."
   (string-append (number->string line) " " file))
 
@@ -52,7 +53,7 @@
    (map (lambda (x) (if (symbol? x)
 			(symbol->string x)
 			(number->string x)))
-		(ly:version))
+	(ly:version))
    "."))
 
 
@@ -61,312 +62,10 @@
 (define ifdef "First run this through cpp.")
 (define ifndef "First run this through cpp.")
 
-
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
-(define-public X 0)
-(define-public Y 1)
-(define-public START -1)
-(define-public STOP 1)
-(define-public LEFT -1)
-(define-public RIGHT 1)
-(define-public UP 1)
-(define-public DOWN -1)
-(define-public CENTER 0)
-
-(define-public DOUBLE-FLAT -4)
-(define-public THREE-Q-FLAT -3)
-(define-public FLAT -2)
-(define-public SEMI-FLAT -1)
-(define-public NATURAL 0)
-(define-public SEMI-SHARP 1)
-(define-public SHARP 2)
-(define-public THREE-Q-SHARP 3)
-(define-public DOUBLE-SHARP 4)
-(define-public SEMI-TONE 2)
-
-(define-public ZERO-MOMENT (ly:make-moment 0 1)) 
-
-(define-public (moment-min a b)
-  (if (ly:moment<? a b) a b))
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; lily specific variables.
-
-(define-public default-script-alist '())
-
-
-;; parser stuff.
-(define-public (print-music-as-book parser music)
-  (let* ((score (ly:music-scorify music))
-	 (head  (ly:parser-lookup parser '$globalheader))
-	 (book (ly:score-bookify score head)))
-    (ly:parser-print-book parser book)))
-
-(define-public (print-score-as-book parser score)
-  (let*
-      ((head  (ly:parser-lookup parser '$globalheader))
-       (book (ly:score-bookify score head)))
-    
-    (ly:parser-print-book parser book)))
-
-(define-public (print-score parser score)
-  (let* ((head  (ly:parser-lookup parser '$globalheader))
-	(book (ly:score-bookify score head)))
-    (ly:parser-print-score parser book)))
-		
-(define-public default-toplevel-music-handler print-music-as-book)
-(define-public default-toplevel-book-handler ly:parser-print-book)
-(define-public default-toplevel-score-handler print-score-as-book)
-
-
-
-;;;;;;;;;;;;;;;;
-; alist
-(define-public (assoc-get key alist . default)
-  "Return value if KEY in ALIST, else DEFAULT (or #f if not specified)."
-  (let ((entry (assoc key alist)))
-    (if (pair? entry)
-	(cdr entry)
-	(if (pair? default) (car default) #f))))
-
-(define-public (uniqued-alist alist acc)
-  (if (null? alist) acc
-      (if (assoc (caar alist) acc)
-	  (uniqued-alist (cdr alist) acc)
-	  (uniqued-alist (cdr alist) (cons (car alist) acc)))))
-
-(define-public (alist<? x y)
-  (string<? (symbol->string (car x))
-	    (symbol->string (car y))))
-
-(define-public (chain-assoc x alist-list)
-  (if (null? alist-list)
-      #f
-      (let* ((handle (assoc x (car alist-list))))
-	(if (pair? handle)
-	    handle
-	    (chain-assoc x (cdr alist-list))))))
-
-(define-public (chain-assoc-get x alist-list . default)
-  "Return ALIST entry for X. Return DEFAULT (optional, else #f) if not
-found."
-
-  (define (helper x alist-list default)
-    (if (null? alist-list)
-	default
-	(let* ((handle (assoc x (car alist-list))))
-	  (if (pair? handle)
-	      (cdr handle)
-	      (helper x (cdr alist-list) default)))))
-
-  (helper x alist-list
-	  (if (pair? default) (car default) #f)))
-
-(define (map-alist-vals func list)
-  "map FUNC over the vals of  LIST, leaving the keys."
-  (if (null?  list)
-      '()
-      (cons (cons  (caar list) (func (cdar list)))
-	    (map-alist-vals func (cdr list)))
-      ))
-
-(define (map-alist-keys func list)
-  "map FUNC over the keys of an alist LIST, leaving the vals. "
-  (if (null?  list)
-      '()
-      (cons (cons (func (caar list)) (cdar list))
-	    (map-alist-keys func (cdr list)))
-      ))
- 
-;;;;;;;;;;;;;;;;
-;; hash
-
-
-
-(if (not (defined? 'hash-table?))	; guile 1.6 compat
-    (begin
-      (define hash-table? vector?)
-
-      (define-public (hash-table->alist t)
-	"Convert table t to list"
-	(apply append
-	       (vector->list t)
-	       )))
-
-    ;; native hashtabs.
-    (begin
-      (define-public (hash-table->alist t)
-
-	(hash-fold (lambda (k v acc) (acons  k v  acc))
-		   '() t)
-	)
-      ))
-
-;; todo: code dup with C++. 
-(define-public (alist->hash-table l)
-  "Convert alist to table"
-  (let
-      ((m (make-hash-table (length l))))
-
-    (map (lambda (k-v)
-	   (hashq-set! m (car k-v) (cdr k-v)))
-	 l)
-
-    m))
-       
-
-
-;;;;;;;;;;;;;;;;
-; list
-
-(define (flatten-list lst)
-  "Unnest LST" 
-  (if (null? lst)
-      '()
-      (if (pair? (car lst))
-	  (append (flatten-list (car lst)) (flatten-list  (cdr lst)))
-	  (cons (car lst) (flatten-list (cdr lst))))
-  ))
-
-(define (list-minus a b)
-  "Return list of elements in A that are not in B."
-  (lset-difference eq? a b))
-
-
-;; TODO: use the srfi-1 partition function.
-(define-public (uniq-list l)
-  
-  "Uniq LIST, assuming that it is sorted"
-  (define (helper acc l) 
-    (if (null? l)
-	acc
-	(if (null? (cdr l))
-	    (cons (car l) acc)
-	    (if (equal? (car l) (cadr l))
-		(helper acc (cdr l))
-		(helper (cons (car l) acc)  (cdr l)))
-	    )))
-  (reverse! (helper '() l) '()))
-
-
-(define (split-at-predicate predicate l)
- "Split L = (a_1 a_2 ... a_k b_1 ... b_k)
-into L1 = (a_1 ... a_k ) and L2 =(b_1 .. b_k) 
-Such that (PREDICATE a_i a_{i+1}) and not (PREDICATE a_k b_1).
-L1 is copied, L2 not.
-
-(split-at-predicate (lambda (x y) (= (- y x) 2))  '(1 3 5 9 11) (cons '() '()))"
-;; "
-
-;; KUT EMACS MODE.
-
-  (define (inner-split predicate l acc)
-  (cond
-   ((null? l) acc)
-   ((null? (cdr l))
-    (set-car! acc (cons (car l) (car acc)))
-    acc)
-   ((predicate (car l) (cadr l))
-    (set-car! acc (cons (car l) (car acc)))
-    (inner-split predicate (cdr l) acc))
-   (else
-    (set-car! acc (cons (car l) (car acc)))
-    (set-cdr! acc (cdr l))
-    acc)
-
-  ))
- (let*
-    ((c (cons '() '()))
-     )
-  (inner-split predicate l  c)
-  (set-car! c (reverse! (car c))) 
-  c)
-)
-
-
-(define-public (split-list l sep?)
-"
-(display (split-list '(a b c / d e f / g) (lambda (x) (equal? x '/))) )
-=>
-((a b c) (d e f) (g))
-
-"
-;; " KUT EMACS.
-
-(define (split-one sep?  l acc)
-  "Split off the first parts before separator and return both parts."
-  (if (null? l)
-      (cons acc '())
-      (if (sep? (car l))
-	  (cons acc (cdr l))
-	  (split-one sep? (cdr l) (cons (car l) acc))
-	  )
-      ))
-
-(if (null? l)
-    '()
-    (let* ((c (split-one sep? l '())))
-      (cons (reverse! (car c) '()) (split-list (cdr c) sep?))
-      )))
-
-
-(define-public (interval-length x)
-  "Length of the number-pair X, when an interval"
-  (max 0 (- (cdr x) (car x)))
-  )
-  
-
-(define (other-axis a)
-  (remainder (+ a 1) 2))
-  
-
-(define-public (interval-widen iv amount)
-   (cons (- (car iv) amount)
-         (+ (cdr iv) amount)))
-
-(define-public (interval-union i1 i2)
-   (cons (min (car i1) (car i2))
-	 (max (cdr i1) (cdr i2))))
-
-
-(define-public (write-me message x)
-  "Return X.  Display MESSAGE and write X.  Handy for debugging, possibly turned off."
-  (display message) (write x) (newline) x)
-;;  x)
-
-(define (index-cell cell dir)
-  (if (equal? dir 1)
-      (cdr cell)
-      (car cell)))
-
-(define (cons-map f x)
-  "map F to contents of X"
-  (cons (f (car x)) (f (cdr x))))
-
-
-(define-public (list-insert-separator lst between)
-  "Create new list, inserting BETWEEN between elements of LIST"
-  (define (conc x y )
-    (if (eq? y #f)
-	(list x)
-	(cons x  (cons between y))
-	))
-  (fold-right conc #f lst))
-
-;;;;;;;;;;;;;;;;
-; other
-(define (sign x)
-  (if (= x 0)
-      0
-      (if (< x 0) -1 1)))
-
-(define-public (symbol<? l r)
-  (string<? (symbol->string l) (symbol->string r)))
-
-(define-public (!= l r)
-  (not (= l r)))
+;; gettext wrapper for guile < 1.7.2
+(if (defined? 'gettext)
+    (define-public _ gettext)
+    (define-public _ ly:gettext))
 
 (define-public (ly:load x)
   (let* ((fn (%search-load-path x)))
@@ -374,165 +73,188 @@ L1 is copied, L2 not.
 	(format (current-error-port) "[~A]" fn))
     (primitive-load fn)))
 
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(define (type-check-list location signature arguments)
+  "Typecheck a list of arguments against a list of type
+predicates. Print a message at LOCATION if any predicate failed."
+  (define (recursion-helper signature arguments count) 
+    (define (helper pred? arg count) 
+      (if (not (pred? arg))
+
+	  (begin
+	    (ly:input-message location
+			      (format #f
+				      (_ "wrong type for argument ~a. Expecting ~a, found ~s")
+				      count (type-name pred?) arg))
+	    #f)
+	  #t))
+
+    (if (null? signature)
+	#t
+	(and (helper (car signature) (car arguments) count)
+	     (recursion-helper (cdr signature) (cdr arguments) (1+ count)))))
+  (recursion-helper signature arguments 1))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;  output
 
 
-;; only load modules necessary.
-(eval
- (cons use-modules
-       (map (lambda (x)
-	      (list 'scm (string->symbol (string-append "framework-" x))))
-	    (ly:output-formats)))
- (current-module))
-       
-   
+;;(define-public (output-framework) (write "hello\n"))
+
 (define output-tex-module
   (make-module 1021 (list (resolve-interface '(scm output-tex)))))
 (define output-ps-module
   (make-module 1021 (list (resolve-interface '(scm output-ps)))))
-(define-public (tex-output-expression expr port)
-  (display (eval expr output-tex-module) port))
+
 (define-public (ps-output-expression expr port)
   (display (eval expr output-ps-module) port))
 
-
-(define output-alist
-  `(
-    ("tex" . ("TeX output. The default output form." ,tex-output-expression))
-    ("scm" . ("Scheme dump: debug scheme stencil expressions" ,write))
-;    ("sketch" . ("Bare bones Sketch output." ,sketch-output-expression))
-;    ("sodipodi" . ("Bare bones Sodipodi output." ,sodipodi-output-expression))
-;    ("pdftex" . ("PDFTeX output. Was last seen nonfunctioning." ,pdftex-output-expression))
-    ))
-
-
-(define (document-format-dumpers)
-  (map
-   (lambda (x)
-     (display (string-append  (pad-string-to 5 (car x)) (cadr x) "\n"))
-     output-alist)
-   ))
-
-(define-public (find-dumper format)
-  (let ((d (assoc format output-alist)))
-    (if (pair? d)
-	(caddr d)
-	(scm-error "Could not find dumper for format ~s" format))))
-
-
+;; TODO: generate this list by registering the stencil expressions
+;;       stencil expressions should have docstrings.
+(define-public (ly:all-stencil-expressions)
+  "Return list of stencil expressions."
+  '(beam
+    bezier-sandwich
+    blank
+    bracket
+    char
+    dashed-line
+    dashed-slur
+    dot
+    draw-line
+    ez-ball
+    filledbox
+    glyph-string
+    horizontal-line
+    named-glyph
+    polygon
+    repeat-slash
+    round-filled-box
+    text
+    white-dot
+    white-text
+    zigzag-line))
+
+;; TODO:
+;;  - generate this list by registering the output-backend-commands
+;;    output-backend-commands should have docstrings.
+;;  - remove hard copies in output-ps output-tex
+(define-public (ly:all-output-backend-commands)
+  "Return list of output backend commands."
+  '(
+    comment
+    grob-cause
+    no-origin
+    placebox
+    unknown))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; other files.
 
 (for-each ly:load
-     ;; load-from-path
-     '("define-music-types.scm"
-       "output-lib.scm"
-       "c++.scm"
-       "chord-ignatzek-names.scm"
-       "chord-entry.scm"
-       "chord-generic-names.scm"
-       "stencil.scm"
-       "new-markup.scm"
-       "bass-figure.scm"
-       "music-functions.scm"
-       "part-combiner.scm"
-       "define-music-properties.scm"
-       "auto-beam.scm"
-       "chord-name.scm"
-
-       "ly-from-scheme.scm"
-       
-       "define-context-properties.scm"
-       "translation-functions.scm"
-       "script.scm"
-       "midi.scm"
-       "beam.scm"
-       "clef.scm"
-       "slur.scm"
-       "font.scm"
-       "encoding.scm"
-       
-       "fret-diagrams.scm"
-       "define-markup-commands.scm"
-       "define-grob-properties.scm"
-       "define-grobs.scm"
-       "define-grob-interfaces.scm"
-       "page-layout.scm"
-       "page-breaking.scm"
-       
-       "paper.scm"
-
-       ; last:
-       "safe-lily.scm"
-       ))
+	  ;; load-from-path
+	  '("lily-library.scm"
+	    "define-music-types.scm"
+	    "output-lib.scm"
+	    "c++.scm"
+	    "chord-ignatzek-names.scm"
+	    "chord-entry.scm"
+	    "chord-generic-names.scm"
+	    "stencil.scm"
+	    "new-markup.scm"
+	    "bass-figure.scm"
+	    "music-functions.scm"
+	    "part-combiner.scm"
+	    "define-music-properties.scm"
+	    "auto-beam.scm"
+	    "chord-name.scm"
+
+	    "ly-from-scheme.scm"
+	    
+	    "define-context-properties.scm"
+	    "translation-functions.scm"
+	    "script.scm"
+	    "midi.scm"
+	    "beam.scm"
+	    "clef.scm"
+	    "slur.scm"
+	    "font.scm"
+	    "encoding.scm"
+	    
+	    "fret-diagrams.scm"
+	    "define-markup-commands.scm"
+	    "define-grob-properties.scm"
+	    "define-grobs.scm"
+	    "define-grob-interfaces.scm"
+	    "page-layout.scm"
+	    "titling.scm"
+	    
+	    "paper.scm"
+
+					; last:
+	    "safe-lily.scm"))
 
 
 (set! type-p-name-alist
-  `(
-   (,boolean-or-symbol? . "boolean or symbol")
-   (,boolean? . "boolean")
-   (,char? . "char")
-   (,grob-list? . "list of grobs")
-   (,hash-table? . "hash table")
-   (,input-port? . "input port")
-   (,integer? . "integer")
-   (,list? . "list")
-   (,ly:context? . "context")
-   (,ly:dimension? . "dimension, in staff space")
-   (,ly:dir? . "direction")
-   (,ly:duration? . "duration")
-   (,ly:grob? . "layout object")
-   (,ly:input-location? . "input location")
-   (,ly:moment? . "moment")
-   (,ly:music? . "music")
-   (,ly:pitch? . "pitch")
-   (,ly:translator? . "translator")
-   (,ly:font-metric? . "font metric")
-   (,markup-list? . "list of markups")
-   (,markup? . "markup")
-   (,ly:music-list? . "list of music")
-   (,number-or-grob? . "number or grob")
-   (,number-or-string? . "number or string")
-   (,number-pair? . "pair of numbers")
-   (,number? . "number")
-   (,output-port? . "output port")   
-   (,pair? . "pair")
-   (,procedure? . "procedure") 
-   (,scheme? . "any type")
-   (,string? . "string")
-   (,symbol? . "symbol")
-   (,vector? . "vector")
-   ))
+      `(
+	(,boolean-or-symbol? . "boolean or symbol")
+	(,boolean? . "boolean")
+	(,char? . "char")
+	(,grob-list? . "list of grobs")
+	(,hash-table? . "hash table")
+	(,input-port? . "input port")
+	(,integer? . "integer")
+	(,list? . "list")
+	(,ly:context? . "context")
+	(,ly:dimension? . "dimension, in staff space")
+	(,ly:dir? . "direction")
+	(,ly:duration? . "duration")
+	(,ly:grob? . "layout object")
+	(,ly:input-location? . "input location")
+	(,ly:moment? . "moment")
+	(,ly:music? . "music")
+	(,ly:pitch? . "pitch")
+	(,ly:translator? . "translator")
+	(,ly:font-metric? . "font metric")
+	(,markup-list? . "list of markups")
+	(,markup? . "markup")
+	(,ly:music-list? . "list of music")
+	(,number-or-grob? . "number or grob")
+	(,number-or-string? . "number or string")
+	(,number-pair? . "pair of numbers")
+	(,number? . "number")
+	(,output-port? . "output port")   
+	(,pair? . "pair")
+	(,procedure? . "procedure") 
+	(,scheme? . "any type")
+	(,string? . "string")
+	(,symbol? . "symbol")
+	(,vector? . "vector")))
 
 
 ;; debug mem leaks
 
 (define gc-protect-stat-count 0)
 (define-public (dump-gc-protects)
-  (set! gc-protect-stat-count (1+ gc-protect-stat-count) )
-  (let*
-      ((protects (sort
-	   (hash-table->alist (ly:protects))
-	   (lambda (a b)
-	     (< (object-address (car a))
-		(object-address (car b))))))
-       (outfile    (open-file (string-append
-	       "gcstat-" (number->string gc-protect-stat-count)
-	       ".scm"
-	       ) "w"))
-       )
-
-    (display "DUMPING...\n")
+  (set! gc-protect-stat-count (1+ gc-protect-stat-count))
+  (let* ((protects (sort
+		    (hash-table->alist (ly:protects))
+		    (lambda (a b)
+		      (< (object-address (car a))
+			 (object-address (car b))))))
+	 (out-file-name (string-append
+			 "gcstat-" (number->string gc-protect-stat-count)
+			 ".scm"))
+	 (outfile    (open-file  out-file-name  "w")))
+
+    (display "Dumping gc protected objs to ...\n")
     (display
      (filter
       (lambda (x) (not (symbol? x))) 
       (map (lambda (y)
-	     (let
-		 ((x (car y))
-		  (c (cdr y)))
+	     (let ((x (car y))
+		   (c (cdr y)))
 
 	       (string-append
 		(string-join
@@ -540,34 +262,82 @@ L1 is copied, L2 not.
 		 " ")
 		"\n")))
 	   protects))
-     outfile)
+     outfile)))
 
-    ))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
 
-(define-public (lilypond-main files)
-  "Entry point for Lilypond"
-  (let*
-      ((failed '())
-       (handler (lambda (key arg)
-		  (set! failed (cons arg failed))))
-       )
+(define-public (ly:system command)
+  (let* ((status 0)
 
-    (for-each
-     (lambda (fn)
-	(catch 'ly-file-failed
-	      (lambda () (ly:parse-file fn))
-	      handler))
-       
-	files)
+	 (silenced
+	  (string-append command (if (ly:get-option 'verbose)
+				     ""
+				     " > /dev/null 2>&1 "))))
+    
+    (if (ly:get-option 'verbose)
+	(format  (current-error-port) (_ "Invoking `~a'...\n") command))
+    
+    (set! status (system silenced))
+    (if (> status 0)
+	(begin
+	  (format (current-error-port)
+		  (_ "Error invoking `~a'. Return value ~a") silenced status)
+	  (newline (current-error-port))))))
+
+(define-public (sanitize-command-option str)
+  (string-append
+   "\""
+   (regexp-substitute/global #f "[^- 0-9,.a-zA-Z'\"\\]" str 'pre 'post)
+   "\""))
+
+(define-public (postscript->pdf papersizename name)
+  (let* ((cmd (string-append "ps2pdf "
+			     (string-append
+			      " -sPAPERSIZE="
+			      (sanitize-command-option papersizename)
+			      " "
+			      name)))
+	 (pdf-name (string-append (basename name ".ps") ".pdf" )))
+
+    (if (access? pdf-name W_OK)
+	(delete-file pdf-name))
+
+    (format (current-error-port) (_ "Converting to `~a'...") pdf-name)
+    (ly:system cmd)))
+
+(define-public (postscript->png resolution name)
+  (let ((cmd (string-append
+	      "ps2png --resolution="
+	      (if (number? resolution)
+		  (number->string resolution)
+		  "90 ")
+	      (if (ly:get-option 'verbose)
+		  "--verbose "
+		  " ")
+	      name)))
+    (ly:system cmd)))
 
+(define-public (lilypond-main files)
+  "Entry point for LilyPond."
+  (let* ((failed '())
+	 (handler (lambda (key arg) (set! failed (cons arg failed)))))
+    (for-each
+     (lambda (f)
+       (catch 'ly-file-failed (lambda () (ly:parse-file f)) handler)
+       (if #f
+	   (dump-gc-protects)))
+     files)
+    
     (if (pair? failed)
 	(begin
-	  (display (string-append "\n *** Failed files: " (string-join failed) "\n" ))
+	  (newline (current-error-port))
+	  (display (_ "error: failed files: ") (current-error-port))
+	  (display (string-join failed) (current-error-port))
+	  (newline (current-error-port))
+	  (newline (current-error-port))
 	  (exit 1))
-	(exit 0))
-
-    ))
-
+	(exit 0))))
 
+(define-public (tweak-grob-property grob sym val)
+  (set! (ly:grob-property grob sym) val))