/* Evaluator for GNU Emacs Lisp interpreter.
Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1999, 2000, 2001,
- 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+ 2002, 2003, 2004, 2005, 2006, 2007, 2008
+ Free Software Foundation, Inc.
This file is part of GNU Emacs.
-GNU Emacs is free software; you can redistribute it and/or modify
+GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
extern Lisp_Object Qrisky_local_variable;
+extern Lisp_Object Qfunction;
+
static Lisp_Object funcall_lambda P_ ((Lisp_Object, int, Lisp_Object*));
static void unwind_to_catch P_ ((struct catchtag *, Lisp_Object)) NO_RETURN;
if (SPECPDL_INDEX () + 100 > max_specpdl_size)
max_specpdl_size = SPECPDL_INDEX () + 100;
-#ifdef HAVE_X_WINDOWS
+#ifdef HAVE_WINDOW_SYSTEM
if (display_hourglass_p)
cancel_hourglass ();
#endif
struct gcpro gcpro1, gcpro2;
register int argnum = 0;
- if (NILP(args))
+ if (NILP (args))
return Qnil;
args_left = args;
register Lisp_Object val, sym;
struct gcpro gcpro1;
- if (NILP(args))
+ if (NILP (args))
return Qnil;
args_left = args;
(args)
Lisp_Object args;
{
+ if (!NILP (Fcdr (args)))
+ xsignal2 (Qwrong_number_of_arguments, Qquote, Flength (args));
return Fcar (args);
}
(args)
Lisp_Object args;
{
+ if (!NILP (Fcdr (args)))
+ xsignal2 (Qwrong_number_of_arguments, Qfunction, Flength (args));
return Fcar (args);
}
doc: /* Make NEW-ALIAS a variable alias for symbol BASE-VARIABLE.
Aliased variables always have the same value; setting one sets the other.
Third arg DOCSTRING, if non-nil, is documentation for NEW-ALIAS. If it is
- omitted or nil, NEW-ALIAS gets the documentation string of BASE-VARIABLE,
- or of the variable at the end of the chain of aliases, if BASE-VARIABLE is
- itself an alias.
+omitted or nil, NEW-ALIAS gets the documentation string of BASE-VARIABLE,
+or of the variable at the end of the chain of aliases, if BASE-VARIABLE is
+itself an alias. If NEW-ALIAS is bound, and BASE-VARIABLE is not,
+then the value of BASE-VARIABLE is set to that of NEW-ALIAS.
The return value is BASE-VARIABLE. */)
(new_alias, base_variable, docstring)
Lisp_Object new_alias, base_variable, docstring;
error ("Cannot make a constant an alias");
sym = XSYMBOL (new_alias);
+ /* http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg00834.html
+ If n_a is bound, but b_v is not, set the value of b_v to n_a.
+ This is for the sake of define-obsolete-variable-alias and user
+ customizations. */
+ if (NILP (Fboundp (base_variable)) && !NILP (Fboundp (new_alias)))
+ XSYMBOL(base_variable)->value = sym->value;
sym->indirect_variable = 1;
sym->value = base_variable;
sym->constant = SYMBOL_CONSTANT_P (base_variable);
GCPRO2 (args, *temps);
gcpro2.nvars = 0;
- for (argnum = 0; !NILP (varlist); varlist = Fcdr (varlist))
+ for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist))
{
QUIT;
- elt = Fcar (varlist);
+ elt = XCAR (varlist);
if (SYMBOLP (elt))
temps [argnum++] = Qnil;
else if (! NILP (Fcdr (Fcdr (elt))))
UNGCPRO;
varlist = Fcar (args);
- for (argnum = 0; !NILP (varlist); varlist = Fcdr (varlist))
+ for (argnum = 0; CONSP (varlist); varlist = XCDR (varlist))
{
- elt = Fcar (varlist);
+ elt = XCAR (varlist);
tem = temps[argnum++];
if (SYMBOLP (elt))
specbind (elt, tem);
#if HAVE_X_WINDOWS
/* If x_catch_errors was done, turn it off now.
(First we give unbind_to a chance to do that.) */
+#if 0 /* This would disable x_catch_errors after x_connection_closed.
+ * The catch must remain in effect during that delicate
+ * state. --lorentey */
x_fully_uncatch_errors ();
+#endif
#endif
byte_stack_list = catch->byte_stack;
If an error happens, the first applicable handler is run.
The car of a handler may be a list of condition names
-instead of a single condition name.
+instead of a single condition name. Then it handles all of them.
-When a handler handles an error,
-control returns to the condition-case and the handler BODY... is executed
-with VAR bound to (SIGNALED-CONDITIONS . SIGNAL-DATA).
-VAR may be nil; then you do not get access to the signal information.
+When a handler handles an error, control returns to the `condition-case'
+and it executes the handler's BODY...
+with VAR bound to (SIGNALED-CONDITIONS . SIGNAL-DATA) from the error.
+(If VAR is nil, the handler can't access that information.)
+Then the value of the last BODY form is returned from the `condition-case'
+expression.
-The value of the last BODY form is returned from the condition-case.
See also the function `signal' for more info.
usage: (condition-case VAR BODYFORM &rest HANDLERS) */)
(args)
#if 0 /* rms: I don't know why this was here,
but it is surely wrong for an error that is handled. */
-#ifdef HAVE_X_WINDOWS
+#ifdef HAVE_WINDOW_SYSTEM
if (display_hourglass_p)
cancel_hourglass ();
#endif
}
-/* Return nonzero iff LIST is a non-nil atom or
+/* Return nonzero if LIST is a non-nil atom or
a list containing one of CONDITIONS. */
static int
/* Emacs primitives are interactive if their DEFUN specifies an
interactive spec. */
if (SUBRP (fun))
- return XSUBR (fun)->prompt ? Qt : if_prop;
+ return XSUBR (fun)->intspec ? Qt : if_prop;
/* Bytecode objects are interactive if they are long enough to
have an element whose index is COMPILED_INTERACTIVE, which is
/* Strings and vectors are keyboard macros. */
if (STRINGP (fun) || VECTORP (fun))
- return NILP (for_call_interactively) ? Qt : Qnil;
+ return (NILP (for_call_interactively) ? Qt : Qnil);
/* Lists may represent commands. */
if (!CONSP (fun))
Lisp_Object fundef, funname;
{
int count = SPECPDL_INDEX ();
- Lisp_Object fun, queue, first, second;
+ Lisp_Object fun;
struct gcpro gcpro1, gcpro2, gcpro3;
/* This is to make sure that loadup.el gives a clear picture
/* Preserve the match data. */
record_unwind_save_match_data ();
- /* Value saved here is to be restored into Vautoload_queue. */
+ /* If autoloading gets an error (which includes the error of failing
+ to define the function being called), we use Vautoload_queue
+ to undo function definitions and `provide' calls made by
+ the function. We do this in the specific case of autoloading
+ because autoloading is not an explicit request "load this file",
+ but rather a request to "call this function".
+
+ The value saved here is to be restored into Vautoload_queue. */
record_unwind_protect (un_autoload, Vautoload_queue);
Vautoload_queue = Qt;
- Fload (Fcar (Fcdr (fundef)), Qnil, noninteractive ? Qt : Qnil, Qnil, Qt);
-
- /* Save the old autoloads, in case we ever do an unload. */
- queue = Vautoload_queue;
- while (CONSP (queue))
- {
- first = XCAR (queue);
- second = Fcdr (first);
- first = Fcar (first);
-
- if (SYMBOLP (first) && CONSP (second) && EQ (XCAR (second), Qautoload))
- Fput (first, Qautoload, (XCDR (second)));
-
- queue = XCDR (queue);
- }
+ Fload (Fcar (Fcdr (fundef)), Qnil, Qt, Qnil, Qt);
/* Once loading finishes, don't undo it. */
Vautoload_queue = Qt;
else
error ("Invalid byte code");
}
- AREF (object, COMPILED_BYTECODE) = XCAR (tem);
- AREF (object, COMPILED_CONSTANTS) = XCDR (tem);
+ ASET (object, COMPILED_BYTECODE, XCAR (tem));
+ ASET (object, COMPILED_CONSTANTS, XCDR (tem));
}
return object;
}
specbind (symbol, value)
Lisp_Object symbol, value;
{
- Lisp_Object ovalue;
Lisp_Object valcontents;
CHECK_SYMBOL (symbol);
}
else
{
- Lisp_Object valcontents;
-
- ovalue = find_symbol_value (symbol);
+ Lisp_Object ovalue = find_symbol_value (symbol);
specpdl_ptr->func = 0;
specpdl_ptr->old_value = ovalue;
valcontents = XSYMBOL (symbol)->value;
if (BUFFER_LOCAL_VALUEP (valcontents)
- || SOME_BUFFER_LOCAL_VALUEP (valcontents)
|| BUFFER_OBJFWDP (valcontents))
{
Lisp_Object where, current_buffer;
buffer's or frame's value we are saving. */
if (!NILP (Flocal_variable_p (symbol, Qnil)))
where = current_buffer;
- else if (!BUFFER_OBJFWDP (valcontents)
+ else if (BUFFER_LOCAL_VALUEP (valcontents)
&& XBUFFER_LOCAL_VALUE (valcontents)->found_for_frame)
where = XBUFFER_LOCAL_VALUE (valcontents)->frame;
else
specpdl_ptr->symbol = symbol;
specpdl_ptr++;
- if (BUFFER_OBJFWDP (ovalue) || KBOARD_OBJFWDP (ovalue))
- store_symval_forwarding (symbol, ovalue, value, NULL);
- else
- set_internal (symbol, value, 0, 1);
+ /* We used to do
+ if (BUFFER_OBJFWDP (ovalue) || KBOARD_OBJFWDP (ovalue))
+ store_symval_forwarding (symbol, ovalue, value, NULL);
+ else
+ but ovalue comes from find_symbol_value which should never return
+ such an internal value. */
+ eassert (!(BUFFER_OBJFWDP (ovalue) || KBOARD_OBJFWDP (ovalue)));
+ set_internal (symbol, value, 0, 1);
}
}
HCoop / bpt / emacs.git / blobdiff