/usr/share/guile/1.8/ice-9/debugger/trc.scm is in guile-1.8-libs 1.8.8+1-6ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | ;;;; (ice-9 debugger trc) -- tracing for Guile debugger code
;;; Copyright (C) 2002, 2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
(define-module (ice-9 debugger trc)
#:export (trc trc-syms trc-all trc-none trc-add trc-remove trc-port))
(define *syms* #f)
(define (trc-set! syms)
(set! *syms* syms))
(define (trc-syms . syms)
(trc-set! syms))
(define (trc-all)
(trc-set! #f))
(define (trc-none)
(trc-set! '()))
(define (trc-add sym)
(trc-set! (cons sym *syms*)))
(define (trc-remove sym)
(trc-set! (delq1! sym *syms*)))
(define (trc sym . args)
(if (or (not *syms*)
(memq sym *syms*))
(let ((port (trc-port)))
(write sym port)
(display ":" port)
(for-each (lambda (arg)
(display " " port)
(write arg port))
args)
(newline port))))
(define trc-port
(let ((port (current-error-port)))
(make-procedure-with-setter
(lambda () port)
(lambda (p) (set! port p)))))
;; Default to no tracing.
(trc-none)
;;; (ice-9 debugger trc) ends here.
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