[Chicken-users] CHICKEN_INCLUDE_PATH and require

2010-10-05 Thread Mario Domenech Goulart
Hi

I'm confused about the `require' semantics for compiled and
interpreted code and regarding to CHICKEN_INCLUDE_PATH.  Here's
an example:

$ pwd
/home/mario/tmp/load


$ ls -l
total 4
-rw-r--r-- 1 mario mario  11 Out  5 09:38 a.scm
drwxr-xr-x 2 mario mario 120 Out  5 09:48 subdir


$ cat a.scm 
(print 'a)


$ cd subdir/


$ ls -l
total 4
-rw-r--r-- 1 mario mario 13 Out  5 09:40 b.scm


$ cat b.scm 
(require 'a)


$ CHICKEN_INCLUDE_PATH=/home/mario/tmp/load csi -s b.scm 
a


$ csc b.scm


$ CHICKEN_INCLUDE_PATH=/home/mario/tmp/load ./b
Error: (require) cannot load extension: a

Call history:

b.scm:1: require--



Why doesn't the compiled code work?

Best wishes.
Mario
-- 
http://parenteses.org/mario

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[Chicken-users] Backslash-symbol changed from \ to \\ between 4.5.0 and 4.6.0

2010-10-05 Thread Peter Danenberg
In 4.5.0, this sufficed to create a backslash symbol:

  '\

whereas in 4.6.0, we need:

  '\\

This change screws up a scheme-latex transformer I had written,
unfortunately; can we revert to the old behaviour, or can I revert
locally by using `set-read-syntax!'?

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Re: [Chicken-users] Backslash-symbol changed from \ to \\ between 4.5.0 and 4.6.0

2010-10-05 Thread Peter Danenberg
Quoth Peter Danenberg on Pungenday, the 59th of Bureaucracy:
 [C]an we revert to the old behaviour, or can I revert locally by
 using `set-read-syntax!'?

Fortunately or unfortunately, this hideous hack suffices to bring back
the 4.5.0 behaviour without permanently modifying the global
read-table:

  (define (call-with-read-syntax char-or-symbol proc thunk)
(let ((old-read-table (copy-read-table (current-read-table
  (dynamic-wind
  (lambda () (void))
  (lambda ()
(set-read-syntax! char-or-symbol proc)
(thunk))
  (lambda () (set! current-read-table
   (lambda () old-read-table))

  ;;; 4.5.0 behaviour: '\ = '\
  (call-with-read-syntax
   #\\
   (lambda (port) '\\)
   (lambda ()
 (with-input-from-string '\\ read)))

  ;;; 4.6.0 behaviour: '\\ = '\
  (with-input-from-string ' read)

I didn't see any mention of this change to the reader in NEWS; was it
intentional?

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