From 4420b6ce4292ae201a95c8ad22a9cc233aa7437a Mon Sep 17 00:00:00 2001
From: Ludovic Court`es
Date: Tue, 11 Jul 2006 14:39:13 +0000
Subject: By default, use (internally) a reader that does not record positions.

* src/guile/skribilo/utils/syntax.scm (%skribilo-module-reader): If
  debugging is not required (default), create a reader that does not
  record positions.

* src/skribilo.in: Don't pass `--debug' by default.

git-archimport-id: lcourtes@laas.fr--2005-libre/skribilo--devo--1.2--patch-4
---
 src/guile/skribilo/utils/syntax.scm | 27 ++++++++++++++++-----------
 src/skribilo.in                     |  7 +++++--
 2 files changed, 21 insertions(+), 13 deletions(-)

(limited to 'src')

diff --git a/src/guile/skribilo/utils/syntax.scm b/src/guile/skribilo/utils/syntax.scm
index f7a5990..975b879 100644
--- a/src/guile/skribilo/utils/syntax.scm
+++ b/src/guile/skribilo/utils/syntax.scm
@@ -1,6 +1,6 @@
 ;;; syntax.scm  --  Syntactic candy for Skribilo modules.
 ;;;
-;;; Copyright 2005  Ludovic Courtès <ludovic.courtes@laas.fr>
+;;; Copyright 2005, 2006  Ludovic Courtès <ludovic.courtes@laas.fr>
 ;;;
 ;;;
 ;;; This program is free software; you can redistribute it and/or modify
@@ -30,21 +30,26 @@
 ;;;
 ;;; Commentary:
 ;;;
-;;; A reader for the Skribe syntax, i.e. roughly R5RS Scheme plus DSSSL-style
-;;; keywords and sk-exps (expressions introduced using a square bracket).
+;;; This module provides syntactic candy for Skribilo modules, i.e., a syntax
+;;; similar to Guile's default syntax with a few extensions, plus various
+;;; convenience macros.
 ;;;
 ;;; Code:
 
 (define %skribilo-module-reader
   ;; The syntax used to read Skribilo modules.
-  (make-alternate-guile-reader '(colon-keywords
-				 no-scsh-block-comments
-				 srfi30-block-comments
-				 srfi62-sexp-comments)
-			       (lambda (chr port read)
-				 (error "unexpected character in Skribilo module"
-					chr))
-			       'reader/record-positions))
+  (apply make-alternate-guile-reader
+         '(colon-keywords no-scsh-block-comments
+           srfi30-block-comments srfi62-sexp-comments)
+         (lambda (chr port read)
+           (error "unexpected character in Skribilo module"
+                  chr))
+
+         ;; By default, don't record positions: this yields a nice read
+         ;; performance improvement.
+         (if (memq 'debug (debug-options))
+             (list 'reader/record-positions)
+             '())))
 
 (define %skribe-reader
   ;; The Skribe syntax reader.
diff --git a/src/skribilo.in b/src/skribilo.in
index 7d3a78d..90bde51 100755
--- a/src/skribilo.in
+++ b/src/skribilo.in
@@ -26,10 +26,13 @@
 # `--debug' had not been passed, not displaying a stack trace.  See
 # http://lists.gnu.org/archive/html/guile-devel/2006-01/msg00022.html
 # for details.
+#
+# In any case, don't pass `--debug' by default (for performance
+# reason).  When needed, the use should explicitly set the `GUILE'
+# environment variable to, e.g., "guile --debug".
 
 main='(module-ref (resolve-module '\''(skribilo)) '\'main')'
-exec ${GUILE-@GUILE@} --debug \
-                      -c "
+exec ${GUILE-@GUILE@} -c "
 (use-modules (skribilo condition))
 
 (call-with-skribilo-error-catch
-- 
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