From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <c17962ae21e39e404d293dce53fef122@plan9.escet.urjc.es>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] [Fwd: Alt Gr Key for French keyboard]
From: Fco.J.Ballesteros <nemo@plan9.escet.urjc.es>
In-Reply-To: <004b01c3bdd9$d005cda0$64844051@SOMA>
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Date: Tue,  9 Dec 2003 09:14:37 +0100
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>> Now, while looking at  the file /sys/src/cmd/usb/hid/kbd.c I was
>> trying to enter the pound sign # while holding Alt Gr key and
>> pressing the "3" key but it just gave me the character "3".
>
> this is well known. iirc both alt and alt-gr generate 'compose'
> and then you can type an arbitrary Rune. this is just wrong.

With the change in /sys/src/9/pc/kbd.c that comes along with usbhid kbd
you get AltGr generated for the right alt instead of Compose.
Perhaps you didnt integrate that change into your kernel.