Hello, again.

Sheesh.   Its starting to come back to me, this 'c' stuff.

It looks like the recursion is starting *after* all the environment 
variables are initially processed, when what looks to my uneducated 
eye the elisp list constructed in 'Vprocess_environment' from strings 
of variable names/values is being copied to 'Vinitial_environment'.

'Fcopy_sequence' is used to do the copy, which invokes 'Fconcat' (!) 
which invokes 'concat' which invokes 'Flength', which bombs with 
'wrong_type_argument'.

IIUC, the intent of 'concat' is to assemble a single result string 
from inputs that may be strings and/or lists/vectors of integers (all 
presumably representing characters).

The comments in the code indicate that the intent is to make a copy of 
the environment array rather than one long string, so it does appear 
that something is going pretty wrong here.

Not being familiar with Emacs internals, I really can't say for sure, 
but is it possible that some sort of type information is getting lost 
here, so that 'concat' is invoked by mistake?

===========================================
void
set_initial_environment ()
{
   register char **envp;
#ifndef CANNOT_DUMP
   if (initialized)
#endif
     {
       for (envp = environ; *envp; envp++)
        Vprocess_environment = Fcons (build_string (*envp),
                                      Vprocess_environment);
       /* Ideally, the `copy' shouldn't be necessary, but it seems it's 
frequent
         to use `delete' and friends on process-environment.  */
       Vinitial_environment = Fcopy_sequence (Vprocess_environment);
     }
}
============================================


Thanks for your time,

Chris Hall



-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Emacs-app-dev- mailing list
Emacs-app-dev-@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emacs-app-dev-

Reply via email to