[Openmcl-devel] Printing space symbol

Gail Zacharias gz at clozure.com
Sun Jul 27 19:17:07 UTC 2008


This should now be fixed in both the trunk and the 1.2 branch.

At 7/25/2008 05:18 PM, Waldek Hebisch wrote:
>Hello all,
>
>I am one of developers of computer algebra system called FriCAS
>(for more information see http://fricas.sf.net).  Currently
>FriCAS works rathe well on top of Closure CL.  However, there
>are some problems, one of them below.
>
>I need to print readably symbol with print name consisting of
>a single space.  However, it seems that Closure CL sometimes
>incorrectly prints such symbols.  More, precisly, when such
>symbol is at the end of line then only backlash is printed
>(space char is lost) -- which means that space turns into
>a newline.
>
>The last version I tried is 'clozurecl-1.2-rc1-linuxx8664.tar.gz'
>but the problem was present also in earlier snapshots.
>
>The following code exibits the problem:
>
>(with-open-file (fil "out" :direction :output
>                            :if-does-not-exist :create
>                            :if-exists :overwrite)
>       (let ((*print-readably* t))
>          (pprint '(|aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa|
>                     | | | | | | | | | | | | | | | | | | | | | |
>  |aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa|) fil)))
>
>As a workaround I use the following patch:
>
>
>--- openmcl/ccl/level-1/l1-io.lisp.bb   2007-08-27 20:47:57.000000000 +0200
>+++ openmcl/ccl/level-1/l1-io.lisp      2007-08-27 20:49:11.000000000 +0200
>@@ -1040,6 +1040,8 @@
>                          ;; or symbol consisting entirely of .'s
>                          (dotimes (i len t)
>                            (declare (fixnum i))
>+                         (when (eql (schar name i) #\ )
>+                           (return t))
>                            (unless (eql (schar name i) #\.)
>                              (return nil))))
>                  (return-from alice
>
>--
>                               Waldek Hebisch
>hebisch at math.uni.wroc.pl
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>Openmcl-devel at clozure.com
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