mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-05-02 04:40:29 +02:00
b66dde3c7d
of resolve-module so that only the exported bindings are searched. (save-value-history): Export the newly defined variable. Reported by Wolfgang Jaehrling.
41 lines
1.5 KiB
Scheme
41 lines
1.5 KiB
Scheme
;;;; Copyright (C) 2000, 2001, 2004 Free Software Foundation, Inc.
|
||
;;;;
|
||
;;;; This library is free software; you can redistribute it and/or
|
||
;;;; modify it under the terms of the GNU Lesser General Public
|
||
;;;; License as published by the Free Software Foundation; either
|
||
;;;; version 2.1 of the License, or (at your option) any later version.
|
||
;;;;
|
||
;;;; This library is distributed in the hope that it will be useful,
|
||
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
;;;; Lesser General Public License for more details.
|
||
;;;;
|
||
;;;; You should have received a copy of the GNU Lesser General Public
|
||
;;;; License along with this library; if not, write to the Free Software
|
||
;;;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
;;;;
|
||
|
||
;;;; A simple value history support
|
||
|
||
(define-module (ice-9 history))
|
||
|
||
(process-define-module '((value-history)))
|
||
|
||
(define (use-value-history x)
|
||
(module-use! (current-module)
|
||
(resolve-interface '(value-history))))
|
||
|
||
(define save-value-history
|
||
(let ((count 0)
|
||
(history (resolve-module '(value-history))))
|
||
(lambda (v)
|
||
(if (not (unspecified? v))
|
||
(let* ((c (1+ count))
|
||
(s (string->symbol (simple-format #f "$~A" c))))
|
||
(simple-format #t "~A = " s)
|
||
(module-define! history s v)
|
||
(module-export! history (list s))
|
||
(set! count c))))))
|
||
|
||
(add-hook! before-eval-hook use-value-history)
|
||
(add-hook! before-print-hook save-value-history)
|