Re: Modifier mapping in X11

[Adrian Robert]

> After wondering for a while why emacs-like keybindings were defined in 
> my DefaultKeyBindings.dict but not showing up in any apps, I realized 
> that GNUstep was apparently not picking up my keymap modifications 
> set either with xmodmap or in the XFree86 config file.  E.g., I map my 
> caps-lock key to another left-control, but GNUstep apps don't pick up 
> control commands, instead inserting characters into the text, as in 
> "

".
>
> I traced this to X11/XGServerEvent.m in 'back'.  It checks modifier 
> status by first converting the defaults like "GSFirstControlKey" into 
> single X KeyCodes on init, then comparing KeyCodes received from the X 
> server with these.  The problem is that X conceptually maps modifiers 
> to KeySyms, not KeyCodes. ...

> Is there any reason not to make this change?  Will it interact badly 
> with any locale / input method code?  If not and no one else wants to 
> do it I can take a stab at this and send out a patch for people to 
> try..

Here is the patch referred to.  Apply in gnustep/core/back using '-p0'.

I've only tested this on my locale="C" machine, so if anyone is using a 
different locale and/or especially a different input method their 
testing would be most welcome..

thanks,
Adrian

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x11_modifier.patch
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