Debian Bug report logs - #58667
Cursor and function keys are not handled by libcanna libraries

Toggle useless messages

Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Masashi Shimbo <shimbo@cis.ibaraki.ac.jp>

To: submit@bugs.debian.org

Subject: Cursor and function keys are not handled by libcanna libraries

Date: Tue, 22 Feb 2000 12:19:47 +0900

Package: libcanna1g
Version: 3.5b2-23

jrKanjiString() function in libcanna libraries cannot handle 
the key codes >= 128.

As a symptom, the users of jvim-canna cannot use Left and Right 
arrow keys for moving the cursor under the Japanese conversion mode.

To reproduce:

1. Install jvim-canna package (I use version 3.0-2.0-2).
2. Start KTerm.
4. Start jvim in the KTerm window.
3. Make sure that KTerm is in Application Cursor Key mode 
   (Press Control + Middle Button to confirm this).
4. Enter Japanese input mode (Press Control + Space)
5. Type some Japanese text (but do not hit Enter key yet), 
   and hit Left or Right arrow keys. 
   They never move the cursor at all.

This is certainly NOT a bug of jvim-canna, because jvim-canna
does the right thing: when jvim-canna receives Right arrow key 
while it is in Japenese input mode, it properly translates 
the key into Canna's internal key code 0x84 (= 132; as 
#defined as CANNA_KEY_Right in /usr/include/canna/keydef.h) 
and passes the translated key code to jrKanjiString() in libcanna1g.

Unfortunately, libcanna1g treats the key wrongly, looking up 
the wrong position (-124-th entry, not 132nd) in the key table.
This is the result of the wrong type conversion from `int' to `char'
which is `signed' in gcc by default, and thus 0x84 is interpreted 
as -124, not 132 as expected.

The following patch corrects the problem.

--- canna-3.5b2/lib/canna/ebind.c	Wed Jun  5 15:09:02 1996
+++ canna-3.5b2.new/lib/canna/ebind.c	Wed Feb 16 20:39:49 2000
@@ -205,9 +205,9 @@
     }
   }
 
-  inbuf[0] = (wchar_t)buffer_return[0];
+  inbuf[0] = (wchar_t)(buffer_return[0] & 0xff);
   for (i = 1 ; i < nbytes ; i++) {
-    inbuf[i] = (wchar_t)buffer_return[i];
+    inbuf[i] = (wchar_t)(buffer_return[i] & 0xff);
   }
   ch = buffer_return[0] & 0xff;
   ret = XwcLookupKanji2(dpy, win, inbuf, inbufsize, nbytes, functionalChar,

Here is the configuration of my machine:

Debian 2.2 (frozen) potato for i386
kernel version 2.2.14
libc 2.1.34
gcc 2.95.2-6
jvim 3.0-2.0-2
kterm 6.2.0-19

--
Masashi Shimbo <shimbo@cis.ibaraki.ac.jp>
Dept. of Information and Computer Sciences
Ibaraki University, Hitachi, Japan

Message #10 received at 58667-close@bugs.debian.org (full text, mbox, reply):

From: ISHIKAWA Mutsumi <ishikawa@linux.or.jp>

To: 58667-close@bugs.debian.org

Subject: canna_3.5b2-27 uploaded

Date: Tue, 17 Oct 2000 18:10:11 +0900

Fixed

canna (3.5b2-27) unstable; urgency=low

  * cleanup patch. remove some garbage files (Makefile, Makefile.bak) from
    diff.gz
  * apply Bugs#58667's patch, closes: Bugs#58667
  * add Build-Depends: in control
  
 -- ISHIKAWA Mutsumi <ishikawa@linux.or.jp>  Mon, 16 Oct 2000 22:18:18 +0900

-- 
いしかわ むつみ
 <ishikawa@linux.or.jp>, <ishikawa@debian.org>, <ishikawa@redhat.com>

Send a report that this bug log contains spam.