Unparse the symbol whose name is `.' as `|.|'.

Add a trivial test for it.

Found by Pavel Panchekha.

diff --git a/src/runtime/unpars.scm b/src/runtime/unpars.scm
index 502ad1f16cc6adad0f80ce725a7a89eac4ff8abc..016ca0986427428dbe59a3c4f283344d5d8bc2a8 100644 (file)
--- a/src/runtime/unpars.scm
+++ b/src/runtime/unpars.scm
@@ -362,7 +362,8 @@ USA.
               (string->number s))
          (and (fix:> (string-length s) 1)
               (or (looks-special? s)
-                  (looks-like-keyword? s))))
+                  (looks-like-keyword? s)))
+         (string=? s "."))
       (begin
        (*unparse-char #\|)
        (let ((end (string-length s)))

diff --git a/tests/check.scm b/tests/check.scm
index bc6e5d12d772c703c2ce47a233821aefefe675a5..37905c555efd85154894e665fffc6f959a30d733 100644 (file)
--- a/tests/check.scm
+++ b/tests/check.scm
@@ -49,6 +49,7 @@ USA.
     "runtime/test-integer-bits"
     "runtime/test-thread-queue"
     "runtime/test-process"
+    "runtime/test-readwrite"
     "runtime/test-regsexp"
     ("runtime/test-wttree" (runtime wt-tree))
     ;;"ffi/test-ffi"

diff --git a/tests/runtime/test-readwrite.scm b/tests/runtime/test-readwrite.scm
new file mode 100644 (file)
index 0000000..24861fb
--- /dev/null
+++ b/tests/runtime/test-readwrite.scm
@@ -0,0 +1,33 @@
+#| -*-Scheme-*-
+
+Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
+    1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+    2006, 2007, 2008, 2009, 2010, 2011, 2012 Massachusetts Institute
+    of Technology
+
+This file is part of MIT/GNU Scheme.
+
+MIT/GNU Scheme is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or (at
+your option) any later version.
+
+MIT/GNU Scheme 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
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with MIT/GNU Scheme; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
+USA.
+
+|#
+
+;;;; Tests for READ and WRITE
+
+(declare (usual-integrations))
+\f
+(define-test 'DOT-SYMBOL-GETS-BARS
+  (lambda ()
+    (assert-equal (write-to-string (string->symbol ".")) "|.|")))