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Re: emacs doesn't use the X clipboard


From: Micha Feigin
Subject: Re: emacs doesn't use the X clipboard
Date: Wed, 14 Jan 2004 09:59:24 +0200
User-agent: Mutt/1.5.5.1+cvs20040105i

On Wed, Jan 14, 2004 at 08:37:26AM +0200, Eli Zaretskii wrote:
> > From: LEE Sau Dan <address@hidden>
> > Newsgroups: gnu.emacs.help
> > Date: 13 Jan 2004 13:06:58 +0100
> > 
> >     Ian> I reported it to RMS, and he said "use gdb on Emacs".  Which
> >     Ian> I won't, because recompiling Emacs on my laptop takes more
> >     Ian> than an hour.
> > 
> > But how  would that help, if you're  not a C programmer  or you're not
> > familiar with  Xlib, so that  you have no  idea of where to  put break
> > points?
> 
> You can get help debugging Emacs on emacs-devel list.  The file
> etc/DEBUG, which is a part of the distribution, should get you
> started.
> 
> The code in Emacs that deals with X selections is in xselect.c.
> 
> > (BTW, it'd be  fun to run gdb under  Emacs, debugging another instance
> > of Emacs.  I  hope one wouldn't be confused by  the two Emacses.  (-fg
> > and -bg suddenly becomes invaluable!)
> 

Off topic, but you want something confusing, trying running gdb inside
gdb while its debugging gcc. BTW IIRC it was compiling gdb at the time ;-)

> I've done that many times.  IMHO, there's no confusion because one
> Emacs is in the GUD mode, which has some special features in its
> display.
> 
> > I'm not sure if ltrace can show the Xlib calls, though.
> 
> I doubt that.  And debugging with ltrace or similar tools is not a
> very efficient method, anyway, compared to stepping with GDB thru the
> source code.  IMHO, ltrace is for the software to which you don't have
> the sources.
> 
> 
> 
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