GNU bug report logs -
#17446
24.4.50; What is the situation around `called-interactively-p'?
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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
Hi,
I recently had to use `called-interactively-p-functions' to fix a
command similar to `repeat-complex-command'.
I used similar hack than the one found in `repeat-complex-command',
but as mentionned in `called-interactively-p' this is not working with
code compiled (I use lexical-binding), thus `dont-compile' have been
made obsolete.
So what to do actually to fix such issues ?
Do you plan to make something better around the terrible
`called-interactively-p' ?
What about a special var to force `called-interactively-p' to return
true when it find this var (Actually this is crashing emacs) ?
It seems the only reason `dont-compile' have been made obsolete is
to force people fixing their code to make it working compiled;
That's ok, but what to do when nothing else is possible ?
IOW why is this obsolete ?
Ref: https://github.com/emacs-helm/helm/issues/489
Thanks.
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Thierry
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(Fri, 09 May 2014 13:40:03 GMT)
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Message #8 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> I recently had to use `called-interactively-p-functions' to fix a
> command similar to `repeat-complex-command'.
> I used similar hack than the one found in `repeat-complex-command',
> but as mentionned in `called-interactively-p' this is not working with
> code compiled (I use lexical-binding), thus `dont-compile' have been
> made obsolete.
>
> So what to do actually to fix such issues ?
>
> Do you plan to make something better around the terrible
> `called-interactively-p' ?
>
> What about a special var to force `called-interactively-p' to return
> true when it find this var (Actually this is crashing emacs) ?
>
> It seems the only reason `dont-compile' have been made obsolete is
> to force people fixing their code to make it working compiled;
> That's ok, but what to do when nothing else is possible ?
> IOW why is this obsolete ?
>
> Ref: https://github.com/emacs-helm/helm/issues/489
FWIW (I think this is related; apologies if not), this is what
I did:
;; Same as `repeat-complex-command--called-interactively-skip'
;; in `simple.el', but tests for `icicle-repeat-complex-command',
;; not `repeat-complex-command'.
(when (> emacs-major-version 23)
(defun icicle-repeat-complex-command--called-interactively-skip
(i _frame1 frame2)
"If currently `icicle-repeat-complex-command', return 1 to skip over it."
(and (eq 'eval (cadr frame2))
(eq 'icicle-repeat-complex-command
(cadr (backtrace-frame i #'called-interactively-p)))
1))
(byte-compile 'icicle-repeat-complex-command))
The reason for the `byte-compile' is that I found that it does
not work when interpreted. (That seems opposite to what you are
saying (?). I do not have non-nil `lexical-binding', however.)
I agree that this all seems complicated & fragile. Dunno what
the solution is.
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(Fri, 09 May 2014 14:12:02 GMT)
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Message #11 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Drew Adams <drew.adams <at> oracle.com> writes:
> I agree that this all seems complicated & fragile. Dunno what
> the solution is.
Useful for packages like Icicles and Helm would be a build in
(defun fake-interactive-call (command &rest args) ...)
factored out of what is now hidden inside `repeat-complex-command'.
Michael.
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Message #14 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> but as mentionned in `called-interactively-p' this is not working with
> code compiled (I use lexical-binding),
I don't know which "mention" you're thinking of here.
`called-interactively-p' is supposed to work (more or less as
well/poorly) in compiled code.
> thus `dont-compile' have been made obsolete.
It's not related.
> So what to do actually to fix such issues ?
Use an additional argument (you can call it `interactive'), provided by
the `interactive' spec?
> Do you plan to make something better around the terrible
> `called-interactively-p' ?
We have that already: the extra arg, as suggested in C-h
f called-interactively-p.
> It seems the only reason `dont-compile' have been made obsolete is
> to force people fixing their code to make it working compiled;
It's obsolete for the following reasons:
- I don't know of any use for it.
- I haven't seen a use of it yet.
- It seems to only make sense for ugly hacks.
> That's ok, but what to do when nothing else is possible ?
AFAIK something else is always possible and preferable. But I don't
know enough about your problem to know that it's indeed also the case in
your situation.
Stefan
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(Fri, 09 May 2014 14:18:01 GMT)
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Message #17 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> this is what I did:
> (defun icicle-repeat-complex-command--called-interactively-skip
...
Plus this code in `icicle-repeat-complex-command':
(if (> emacs-major-version 23)
(unwind-protect
(progn
(add-hook
'called-interactively-p-functions
#'icicle-repeat-complex-command--called-interactively-skip)
(eval newcmd))
(remove-hook
'called-interactively-p-functions
#'icicle-repeat-complex-command--called-interactively-skip))
(eval newcmd))
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Message #20 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> > So what to do actually to fix such issues ?
>
> Use an additional argument (you can call it `interactive'),
> provided by the `interactive' spec?
>
> > Do you plan to make something better around the terrible
> > `called-interactively-p' ?
>
> We have that already: the extra arg, as suggested in C-h
> f called-interactively-p.
Sure, we already do that. But that doesn't help when you define
a "command similar to `repeat-complex-command'", as Thierry says,
and as I have done too. Such a command has little control over
the definition of the command that it invokes.
> > That's ok, but what to do when nothing else is possible ?
>
> AFAIK something else is always possible and preferable. But I don't
> know enough about your problem to know that it's indeed also the case in
> your situation.
I thought he described it pretty well. Write a command that is
similar to `repeat-complex-command'. Now make it work-around Emacs
bug #14136.
You end up doing for your new command something like what Emacs
does for `repeat-complex-command'. And AFAICT, that works only
when the helper function (similar to vanilla Emacs function
`repeat-complex-command--called-interactively-skip') is
byte-compiled.
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Message #23 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> > I agree that this all seems complicated & fragile. Dunno what
> > the solution is.
>
> Useful for packages like Icicles and Helm would be a build in
> (defun fake-interactive-call (command &rest args) ...)
> factored out of what is now hidden inside `repeat-complex-command'.
Yes. Or even a standard helper command, a la
`repeat-complex-command--called-interactively-skip', which
provides a way (e.g. a variable) to specify the replacement for `repeat-complex-command'.
IOW, it's a bit silly for libraries to essentially duplicate the
ugly hack used in `repeat-complex-command', specifying their own
command in place of it.
If this hack is the best Emacs can do then we should do it just
once and let other commands that are similar to
`repeat-complex-command' make use of it without just duplicating it.
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Message #26 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> You end up doing for your new command something like what Emacs
> does for `repeat-complex-command'.
Yes.
> And AFAICT, that works only
> when the helper function (similar to vanilla Emacs function
> `repeat-complex-command--called-interactively-skip') is
> byte-compiled.
Ah, now I understand the "byte-compiled" part (I kept thinking it was
about whether the command (i.e. callee) is byte-compiled).
> Useful for packages like Icicles and Helm would be a build in
> (defun fake-interactive-call (command &rest args) ...)
> factored out of what is now hidden inside `repeat-complex-command'.
Yes, that makes a lot of sense now.
Before we go about doing that, I'd want to know one more thing: how did
icicles and helm does with it, in previous versions of Emacs?
Stefan
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(Fri, 09 May 2014 14:56:02 GMT)
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Message #29 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> Before we go about doing that, I'd want to know one more thing: how did
> icicles and helm does with it, in previous versions of Emacs?
Icicles did nothing - the bug existed, just as in vanilla Emacs.
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Message #32 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Drew Adams <drew.adams <at> oracle.com> writes:
> > Before we go about doing that, I'd want to know one more thing: how did
> > icicles and helm does with it, in previous versions of Emacs?
>
> Icicles did nothing - the bug existed, just as in vanilla Emacs.
It was the same with helm.
Michael.
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Message #35 received at 17446 <at> debbugs.gnu.org (full text, mbox):
>> > Before we go about doing that, I'd want to know one more thing: how did
>> > icicles and helm does with it, in previous versions of Emacs?
>> Icicles did nothing - the bug existed, just as in vanilla Emacs.
In which sense did it exist in vanilla Emacs?
> It was the same with helm.
IOW, this is a long standing problem, for which
called-interactively-p-functions provides a limited workaround?
Stefan
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Message #38 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Stefan Monnier <monnier <at> iro.umontreal.ca> writes:
>>> > Before we go about doing that, I'd want to know one more thing: how did
>>> > icicles and helm does with it, in previous versions of Emacs?
>>> Icicles did nothing - the bug existed, just as in vanilla Emacs.
>
> In which sense did it exist in vanilla Emacs?
(eval (count-words nil nil))
=> eval: Wrong type argument: integer-or-marker-p, nil
We were using a condition-case returning an error message in such cases.
See
https://lists.gnu.org/archive/html/emacs-bug-tracker/2013-08/msg00161.html
>> It was the same with helm.
>
> IOW, this is a long standing problem, for which
> called-interactively-p-functions provides a limited workaround?
Yes, seems fragile too.
Another approch would be to allow more args to `call-interactively',
this would allow one to use:
(apply 'call-interactively '(sexp arg1 arg2 arg...))
But not sure this would cover all use cases.
--
Thierry
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Message #41 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> >> the bug existed, just as in vanilla Emacs.
>
> In which sense did it exist in vanilla Emacs?
I assume Michael was referring to Emacs bug #14136.
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Message #44 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> Another approch would be to allow more args to `call-interactively',
> this would allow one to use:
> (apply 'call-interactively '(sexp arg1 arg2 arg...))
> But not sure this would cover all use cases.
Right, I'm thinking of introducing a new `funcall-interactively' which
is just like `funcall' except that the called function will see its
`called-interactively-p' returning non-nil.
But I think this will have to wait for 24.5.
Stefan
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Message #47 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> Right, I'm thinking of introducing a new `funcall-interactively' which
> is just like `funcall' except that the called function will see its
> `called-interactively-p' returning non-nil.
How 'bout the patch below,
Stefan
=== modified file 'lisp/simple.el'
--- lisp/simple.el 2014-05-01 23:25:28 +0000
+++ lisp/simple.el 2014-05-09 20:42:04 +0000
@@ -1503,24 +1503,13 @@
;; add it to the history.
(or (equal newcmd (car command-history))
(setq command-history (cons newcmd command-history)))
- (unwind-protect
- (progn
- ;; Trick called-interactively-p into thinking that `newcmd' is
- ;; an interactive call (bug#14136).
- (add-hook 'called-interactively-p-functions
- #'repeat-complex-command--called-interactively-skip)
- (eval newcmd))
- (remove-hook 'called-interactively-p-functions
- #'repeat-complex-command--called-interactively-skip)))
+ (apply #'funcall-interactively
+ (car newcmd)
+ (mapcar (lambda (e) (eval e t)) (cdr newcmd))))
(if command-history
(error "Argument %d is beyond length of command history" arg)
(error "There are no previous complex commands to repeat")))))
-(defun repeat-complex-command--called-interactively-skip (i _frame1 frame2)
- (and (eq 'eval (cadr frame2))
- (eq 'repeat-complex-command
- (cadr (backtrace-frame i #'called-interactively-p)))
- 1))
(defvar extended-command-history nil)
=== modified file 'lisp/subr.el'
--- lisp/subr.el 2014-04-09 01:48:07 +0000
+++ lisp/subr.el 2014-05-09 20:24:34 +0000
@@ -3832,7 +3832,8 @@
(byte-compile-log-warning msg))
(run-with-timer 0 nil
(lambda (msg)
- (message "%s" msg)) msg))))
+ (message "%s" msg))
+ msg))))
;; Finally, run any other hook.
(run-hook-with-args 'after-load-functions abs-file))
@@ -4149,7 +4150,8 @@
if those frames don't seem special and otherwise, it should return
the number of frames to skip (minus 1).")
-(defconst internal--call-interactively (symbol-function 'call-interactively))
+(defconst internal--funcall-interactively
+ (symbol-function 'funcall-interactively))
(defun called-interactively-p (&optional kind)
"Return t if the containing function was called by `call-interactively'.
@@ -4225,8 +4227,8 @@
(`((,_ ,(pred (lambda (f) (subrp (indirect-function f)))) . ,_) . ,_) nil)
;; In case #<subr call-interactively> without going through the
;; `call-interactively' symbol (bug#3984).
- (`(,_ . (t ,(pred (eq internal--call-interactively)) . ,_)) t)
- (`(,_ . (t call-interactively . ,_)) t)))))
+ (`(,_ . (t ,(pred (eq internal--funcall-interactively)) . ,_)) t)
+ (`(,_ . (t funcall-interactively . ,_)) t)))))
(defun interactive-p ()
"Return t if the containing function was run directly by user input.
=== modified file 'src/callint.c'
--- src/callint.c 2014-04-22 07:04:34 +0000
+++ src/callint.c 2014-05-09 20:47:17 +0000
@@ -29,7 +29,7 @@
#include "keymap.h"
Lisp_Object Qminus, Qplus;
-static Lisp_Object Qcall_interactively;
+static Lisp_Object Qfuncall_interactively;
static Lisp_Object Qcommand_debug_status;
static Lisp_Object Qenable_recursive_minibuffers;
@@ -233,6 +233,22 @@
}
}
+/* BEWARE: Calling this directly from C would defeat the purpose! */
+DEFUN ("funcall-interactively", Ffuncall_interactively, Sfuncall_interactively,
+ 1, MANY, 0, doc: /* Like `funcall' but marks the call as interactive.
+I.e. arrange that within the called function `called-interactively-p' will
+return non-nil. */)
+ (ptrdiff_t nargs, Lisp_Object *args)
+{
+ ptrdiff_t speccount = SPECPDL_INDEX ();
+ temporarily_switch_to_single_kboard (NULL);
+
+ /* Nothing special to do here, all the work is inside
+ `called-interactively-p'. Which will look for us as a marker in the
+ backtrace. */
+ return unbind_to (speccount, Ffuncall (nargs, args));
+}
+
DEFUN ("call-interactively", Fcall_interactively, Scall_interactively, 1, 3, 0,
doc: /* Call FUNCTION, providing args according to its interactive calling specs.
Return the value FUNCTION returns.
@@ -374,8 +390,13 @@
Vreal_this_command = save_real_this_command;
kset_last_command (current_kboard, save_last_command);
- temporarily_switch_to_single_kboard (NULL);
- return unbind_to (speccount, apply1 (function, specs));
+ {
+ Lisp_Object args[3];
+ args[0] = Qfuncall_interactively;
+ args[1] = function;
+ args[2] = specs;
+ return unbind_to (speccount, Fapply (3, args));
+ }
}
/* Here if function specifies a string to control parsing the defaults. */
@@ -446,10 +467,11 @@
else break;
}
- /* Count the number of arguments, which is one plus the number of arguments
- the interactive spec would have us give to the function. */
+ /* Count the number of arguments, which is two (the function itself and
+ `funcall-interactively') plus the number of arguments the interactive spec
+ would have us give to the function. */
tem = string;
- for (nargs = 1; *tem; )
+ for (nargs = 2; *tem; )
{
/* 'r' specifications ("point and mark as 2 numeric args")
produce *two* arguments. */
@@ -488,13 +510,13 @@
specbind (Qenable_recursive_minibuffers, Qt);
tem = string;
- for (i = 1; *tem; i++)
+ for (i = 2; *tem; i++)
{
- visargs[0] = make_string (tem + 1, strcspn (tem + 1, "\n"));
- if (strchr (SSDATA (visargs[0]), '%'))
+ visargs[1] = make_string (tem + 1, strcspn (tem + 1, "\n"));
+ if (strchr (SSDATA (visargs[1]), '%'))
callint_message = Fformat (i, visargs);
else
- callint_message = visargs[0];
+ callint_message = visargs[1];
switch (*tem)
{
@@ -789,21 +811,22 @@
QUIT;
- args[0] = function;
+ args[0] = Qfuncall_interactively;
+ args[1] = function;
if (arg_from_tty || !NILP (record_flag))
{
/* We don't need `visargs' any more, so let's recycle it since we need
an array of just the same size. */
- visargs[0] = function;
- for (i = 1; i < nargs; i++)
+ visargs[1] = function;
+ for (i = 2; i < nargs; i++)
{
if (varies[i] > 0)
visargs[i] = list1 (intern (callint_argfuns[varies[i]]));
else
visargs[i] = quotify_arg (args[i]);
}
- Vcommand_history = Fcons (Flist (nargs, visargs),
+ Vcommand_history = Fcons (Flist (nargs - 1, visargs + 1),
Vcommand_history);
/* Don't keep command history around forever. */
if (INTEGERP (Vhistory_length) && XINT (Vhistory_length) > 0)
@@ -816,7 +839,7 @@
/* If we used a marker to hold point, mark, or an end of the region,
temporarily, convert it to an integer now. */
- for (i = 1; i < nargs; i++)
+ for (i = 2; i < nargs; i++)
if (varies[i] >= 1 && varies[i] <= 4)
XSETINT (args[i], marker_position (args[i]));
@@ -829,11 +852,7 @@
kset_last_command (current_kboard, save_last_command);
{
- Lisp_Object val;
- specbind (Qcommand_debug_status, Qnil);
-
- temporarily_switch_to_single_kboard (NULL);
- val = Ffuncall (nargs, args);
+ Lisp_Object val = Ffuncall (nargs, args);
UNGCPRO;
return unbind_to (speccount, val);
}
@@ -888,7 +907,7 @@
DEFSYM (Qplus, "+");
DEFSYM (Qhandle_shift_selection, "handle-shift-selection");
DEFSYM (Qread_number, "read-number");
- DEFSYM (Qcall_interactively, "call-interactively");
+ DEFSYM (Qfuncall_interactively, "funcall-interactively");
DEFSYM (Qcommand_debug_status, "command-debug-status");
DEFSYM (Qenable_recursive_minibuffers, "enable-recursive-minibuffers");
DEFSYM (Qmouse_leave_buffer_hook, "mouse-leave-buffer-hook");
@@ -946,5 +965,6 @@
defsubr (&Sinteractive);
defsubr (&Scall_interactively);
+ defsubr (&Sfuncall_interactively);
defsubr (&Sprefix_numeric_value);
}
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Message #50 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> How 'bout the patch below,
BTW, for older Emacsen, you can probably use a hack along the lines of
the guaranteed 100% untested code below:
(defun funcall-interactively (fun &rest args)
(call-interactively
(cond
((consp fun)
(mapcar (lambda (x)
(if (eq (car-safe x) 'interactive))
`(interactive ',args) x)
fun))
((byte-code-function-p)
(apply #'make-byte-code
(aref 0 fun)
(aref 1 fun)
(aref 2 fun)
(aref 3 fun)
(aref 4 fun)
`',args)))))
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Message #53 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> > How 'bout the patch below,
> BTW, for older Emacsen, you can probably use a hack along the lines of
> the guaranteed 100% untested code below:
Not sure I understand how any of this will help the use cases we
mentioned. Is the idea that `repeat-complex-command' will, instead
of doing (eval newcmd), do something like this?
(eval `(funcall-interactively ,(car newcmd) ,@(cdr newcmd)))
For the case in bug #14136, where NEWCMD is (count-words nil nil),
this would mean (funcall-interactively 'count-words nil nil).
(Maybe an `apply-interactively' would be handier here?)
In any case, I will wait to see how this changes the
`repeat-complex-command' code and then do likewise for my code,
which is similar.
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Message #56 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> In any case, I will wait to see how this changes the
> `repeat-complex-command' code and then do likewise for my code,
> which is similar.
Go back 2 steps.
Stefan
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Message #59 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Stefan Monnier <monnier <at> iro.umontreal.ca> writes:
> Right, I'm thinking of introducing a new `funcall-interactively' which
> is just like `funcall' except that the called function will see its
> `called-interactively-p' returning non-nil.
That's good news, great, thanks.
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Message #62 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Stefan Monnier <monnier <at> iro.umontreal.ca> writes:
>> Right, I'm thinking of introducing a new `funcall-interactively' which
>> is just like `funcall' except that the called function will see its
>> `called-interactively-p' returning non-nil.
>
> How 'bout the patch below,
Just applied and tried, it is working fine, thanks.
However:
> + (apply #'funcall-interactively
> + (car newcmd)
> + (mapcar (lambda (e) (eval e t)) (cdr newcmd))))
Is this needed ?
Looks like
(apply #'funcall-interactively (car newcmd) (cdr newcmd))
is enough no ?
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Message #65 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Stefan Monnier <monnier <at> iro.umontreal.ca> writes:
>> How 'bout the patch below,
>
> BTW, for older Emacsen, you can probably use a hack along the lines of
> the guaranteed 100% untested code below:
>
> (defun funcall-interactively (fun &rest args)
> (call-interactively
> (cond
> ((consp fun)
> (mapcar (lambda (x)
> (if (eq (car-safe x) 'interactive))
^
> `(interactive ',args) x)
> fun))
> ((byte-code-function-p)
^ missing arg ?
> (apply #'make-byte-code
> (aref 0 fun)
> (aref 1 fun)
> (aref 2 fun)
> (aref 3 fun)
> (aref 4 fun)
> `',args)))))
This won't work IMO, why fun would be a cons or a byte-code-function ?
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Message #68 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> (apply #'funcall-interactively (car newcmd) (cdr newcmd))
No, `newcmd' is an expression, so (cdr newcommand) contains arguments
that need to be evaluated. In some/many cases this evaluation is
trivial (the args are self-quoting, like nil or integers), but sometimes
the args can be things like (region-beginning).
> > (defun funcall-interactively (fun &rest args)
[sample hack to define funcall-interactively in terms of call-interactively]
> This won't work IMO, why fun would be a cons or a byte-code-function ?
These are the only interesting cases. The other cases (subrp and
symbolp, AFAICT) are trivial.
Stefan
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Message #71 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Stefan Monnier <monnier <at> iro.umontreal.ca> writes:
> BTW, for older Emacsen, you can probably use a hack along the lines of
> the guaranteed 100% untested code below:
I tried to make it work:
(defun funcall-interactively (fun &rest args)
(setq fun (indirect-function fun))
(call-interactively
(cond
((consp fun)
(mapcar (lambda (x)
(if (eq (car-safe x) 'interactive)
`(interactive ',args) x))
fun))
((byte-code-function-p fun)
(apply #'make-byte-code
(aref fun 0)
(aref fun 1)
(aref fun 2)
(aref fun 3)
(aref fun 4)
(aref fun 5)
args)))))
Works at least with the count-words case:
(funcall-interactively 'count-words nil nil) ==> something useful
Michael.
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Message #74 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Stefan Monnier <monnier <at> iro.umontreal.ca> writes:
>> (apply #'funcall-interactively (car newcmd) (cdr newcmd))
>
> No, `newcmd' is an expression, so (cdr newcommand) contains arguments
> that need to be evaluated. In some/many cases this evaluation is
> trivial (the args are self-quoting, like nil or integers), but sometimes
> the args can be things like (region-beginning).
Hmm, not sure of this, at least for `repeat-complex-command' something
like (region-beginning) is already evaluated and recorded as an integer
no ?
Oh! ok I see, something like M-: (region-beginning)
will be recorded as something like
(pp-eval-expression (quote (region-beginning)))
>> > (defun funcall-interactively (fun &rest args)
> [sample hack to define funcall-interactively in terms of call-interactively]
>> This won't work IMO, why fun would be a cons or a byte-code-function ?
>
> These are the only interesting cases. The other cases (subrp and
> symbolp, AFAICT) are trivial.
I still don't understand how this would be able to call interactively
something like:
(count-words-region 234 567 nil)
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Message #77 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Michael Heerdegen <michael_heerdegen <at> web.de> writes:
> Stefan Monnier <monnier <at> iro.umontreal.ca> writes:
>
>> BTW, for older Emacsen, you can probably use a hack along the lines of
>> the guaranteed 100% untested code below:
>
> I tried to make it work:
>
> (defun funcall-interactively (fun &rest args)
> (setq fun (indirect-function fun))
> (call-interactively
> (cond
> ((consp fun)
> (mapcar (lambda (x)
> (if (eq (car-safe x) 'interactive)
> `(interactive ',args) x))
> fun))
> ((byte-code-function-p fun)
> (apply #'make-byte-code
> (aref fun 0)
> (aref fun 1)
> (aref fun 2)
> (aref fun 3)
> (aref fun 4)
> (aref fun 5)
> args)))))
>
> Works at least with the count-words case:
>
> (funcall-interactively 'count-words nil nil) ==> something useful
Great, works also with `count-words-region'.
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Message #80 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Drew Adams <drew.adams <at> oracle.com> writes:
> In any case, I will wait to see how this changes the
> `repeat-complex-command' code and then do likewise for my code,
> which is similar.
Probably I will inline the funcall-interactively version Stefan and
Michael sent and use something like this in helm:
(defun helm-sexp-eval (cand)
(let ((sexp (read cand)))
(condition-case err
(apply #'funcall-interactively (car sexp)
(mapcar (lambda (e) (eval e t)) (cdr sexp)))
(error (message "Evaluating gave an error: %S" err)
nil))))
Probably you can do something similar in icicles.
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Message #83 received at submit <at> debbugs.gnu.org (full text, mbox):
On 10.05.2014 08:45, Stefan Monnier wrote:
>> (apply #'funcall-interactively (car newcmd) (cdr newcmd))
>
> No, `newcmd' is an expression, so (cdr newcommand) contains arguments
> that need to be evaluated. In some/many cases this evaluation is
> trivial (the args are self-quoting, like nil or integers), but sometimes
> the args can be things like (region-beginning).
>
>>> (defun funcall-interactively (fun &rest args)
> [sample hack to define funcall-interactively in terms of call-interactively]
>> This won't work IMO, why fun would be a cons or a byte-code-function ?
>
> These are the only interesting cases. The other cases (subrp and
> symbolp, AFAICT) are trivial.
>
>
> Stefan
>
>
>
>
So maybe the good old and simple (interactive-p) needs no longer being obsolete?
Andreas
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Message #86 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> I still don't understand how this would be able to call interactively
> something like:
> (count-words-region 234 567 nil)
The code I showed takes an interactive function with some args, rips the
function apart to rebuild a new one whose interactive spec just returns
those args.
If the function is a symbol, then recurse on (symbol-function fun).
Stefan
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Message #89 received at submit <at> debbugs.gnu.org (full text, mbox):
> So maybe the good old and simple (interactive-p) needs no longer
> being obsolete?
Unrelated. It's obsolete because it's replaced by called-interactively-p.
The discussion here applies just as much about interactive-p as about
called-interactively-p.
And using/introducing funcall-interactively doesn't solve all the other
problems with interactive-p/called-interactively-p, such as the fact
that they may (depending on the position of the sun) return nil rather
than t if called within an `unwind-protect'.
Stefan
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Message #92 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Stefan Monnier <monnier <at> iro.umontreal.ca> writes:
> The code I showed takes an interactive function with some args, rips
> the function apart to rebuild a new one whose interactive spec just
> returns those args. If the function is a symbol, then recurse on
> (symbol-function fun).
Yes, it's a funny idea.
Stefan, what's the right approach to make commands that refer to
this-command or last-command work correctly when called with your code?
Should we add something like
(when (symbolp fun) (setq this-command fun)) ?
Does your patch planned for later inclusion care about updating
this-command and last-command appropriately?
Thanks,
Michael.
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Message #95 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Stefan Monnier <monnier <at> iro.umontreal.ca> writes:
>> I still don't understand how this would be able to call interactively
>> something like:
>
>> (count-words-region 234 567 nil)
>
> The code I showed takes an interactive function with some args, rips the
> function apart to rebuild a new one whose interactive spec just returns
> those args.
> If the function is a symbol, then recurse on (symbol-function fun).
I got it now, thanks for explanations and your work on this.
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Message #98 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Michael Heerdegen <michael_heerdegen <at> web.de> writes:
> (when (symbolp fun) (setq this-command fun)) ?
call-interactively doesn't set `this-command'. Nor does
`repeat-complex-command'. Should one of them set it?
Example:
--8<---------------cut here---------------start------------->8---
(defvar the-string nil)
(defun test (string)
(interactive (list (if (eq this-command last-command)
the-string
(setq the-string (read-string "Enter string: ")))))
(message (concat "You "
(if (eq this-command last-command) "had" "have")
" entered "
the-string)))
(global-set-key [f12] #'test)
--8<---------------cut here---------------end--------------->8---
If you repeat `test' via repeat-complex-command and hit f12 after that,
it doesn't behave as expected (i.e., message "You had entered ...").
Should it?
Michael.
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Message #101 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> Stefan, what's the right approach to make commands that refer to
> this-command or last-command work correctly when called with your code?
`this/last-command' are not directly related to call-interactively.
Instead they're handled by the top-level command loop.
> Does your patch planned for later inclusion care about updating
> this-command and last-command appropriately?
No.
Stefan
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Message #104 received at submit <at> debbugs.gnu.org (full text, mbox):
On 10.05.2014 22:19, Stefan Monnier wrote:
>> So maybe the good old and simple (interactive-p) needs no longer
>> being obsolete?
>
> Unrelated. It's obsolete because it's replaced by called-interactively-p.
> The discussion here applies just as much about interactive-p as about
> called-interactively-p.
[ ... ]
Okay, thanks.
Andredas
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Message #107 received at 17446 <at> debbugs.gnu.org (full text, mbox):
Hi,
my last question was: should `repeat-complex-command' set
`this-command'? See my example. If the answer is "yes" - shall I
create a separate bug report?
Thanks,
Michael.
> Example:
>
> (defvar the-string nil)
>
> (defun test (string)
> (interactive (list (if (eq this-command last-command)
> the-string
> (setq the-string (read-string "Enter string: ")))))
> (message (concat "You "
> (if (eq this-command last-command) "had" "have")
> " entered "
> the-string)))
>
> (global-set-key [f12] #'test)
>
> If you repeat `test' via repeat-complex-command and hit f12 after that,
> it doesn't behave as expected (i.e., message "You had entered ...").
> Should it?
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Message #110 received at 17446 <at> debbugs.gnu.org (full text, mbox):
> my last question was: should `repeat-complex-command' set
> `this-command'? See my example. If the answer is "yes" - shall I
> create a separate bug report?
It probably should, yes. Just like execute-extended-command does.
Stefan
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Message #113 received at 17446 <at> debbugs.gnu.org (full text, mbox):
close 17446 25.1
quit
Stefan Monnier <monnier <at> iro.umontreal.ca> writes:
>> Another approch would be to allow more args to `call-interactively',
>> this would allow one to use:
>
>> (apply 'call-interactively '(sexp arg1 arg2 arg...))
>
>> But not sure this would cover all use cases.
>
> Right, I'm thinking of introducing a new `funcall-interactively' which
> is just like `funcall' except that the called function will see its
> `called-interactively-p' returning non-nil.
>
> But I think this will have to wait for 24.5.
Seems to have been done in 25.1
bug marked as fixed in version 25.1, send any further explanations to
17446 <at> debbugs.gnu.org and Thierry Volpiatto <thierry.volpiatto <at> gmail.com>
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bug archived.
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This bug report was last modified 8 years and 120 days ago.
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