[plt-scheme] Swedish keyboard bug in DrScheme

From: Robby Findler (robby at cs.uchicago.edu)
Date: Fri Jun 13 13:21:02 EDT 2008

Thanks for figuring this out! I don't have a sweedish keyboard to test
this on, so I wonder if one of you can help me by applying the patch
below (just a simple change to two lines), exiting drscheme, running
"setup-plt" from a shell/command window and then seeing if DrScheme
behaves properly after that?

The file in question in plt/collects/framework/private/keymap.ss. Just
in case you're not familiar with the notation below, the lines with
the "-" in front go away and should be replaced by the ones with the
"+" in front (but don't include the "+" itself). The lines without "+"
or "-" are just there for context so you can be sure you're in the
right spot in the file.

--- keymap.ss	(revision 10227)
+++ keymap.ss	(working copy)
@@ -1079,8 +1079,8 @@
             (setup-mappings greek-letters #f)
             (setup-mappings Greek-letters #t))

-          (map "c:\\" "TeX compress")
-          (map "m:\\" "TeX compress")
+          (map "~m:c:\\" "TeX compress")
+          (map "~c:m:\\" "TeX compress")

           (map-meta "c:down" "down-into-embedded-editor")
           (map "a:c:down" "down-into-embedded-editor")


On Fri, Jun 13, 2008 at 11:33 AM, Pekka Karjalainen <p3k at iki.fi> wrote:
> On 6/13/08, Niklas Larsson <nifty at live.se> wrote:
>> In DrScheme 4.0 for Windows it is impossible to type a backslash character
>> on a swedish keyboard. We use the AltGr-+ combination to get '\' on swedish
>> keyboards, it does nothing in DrScheme, all other AltGr combinations seem to
>> work fine (braces, @, $, €...). This problem didn't exist in v371. A really
>> weird bug.
> DrScheme has a default keybinding where Meta-\ means "TeX compress".
> This changes the names of greek letters written in TeX style to the
> corresponding symbols. E.g. \beta turns into the actual character for
> lowercase beta. I think this only works when the caret is placed right
> after such a string.
> You can change the keybinding with the help of this piece of code.
> It's based on a message I found in the mailing list archives, as
> referenced. Save this as a file mykeys.ss somewhere convenient.
> ;; following the msg
> http://www.cs.brown.edu/pipermail/plt-scheme/2006-March/012391.html
> (module mykeys (lib "keybinding-lang.ss" "framework")
>  (define (make-handler s)
>    (lambda (editor event)
>      (send editor insert (make-object string-snip% s))))
>  (keybinding "M:\\" (make-handler "\\")))
> Then go to Edit -> Keybindings -> Add User-defined Keybindings and
> choose the file you just saved. This should make the key combination
> do what you expect. You can remove this file from use later; an option
> to do this appears in the menu.
> If the preferred form for the above in DrScheme 4.0 is something else,
> I'd be happy to know about it. All I really know is that it works for
> me, and I'll eventually get around to learning more about snips and
> events...
> Pekka Karjalainen, with pretty much the same kind of keyboard
> _________________________________________________
>  For list-related administrative tasks:
>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme

Posted on the users mailing list.