Stefan Kangas <stefankangas@HIDDEN>
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From: Stefan Monnier <monnier@HIDDEN>
To: dick.r.chiang@HIDDEN
Subject: Re: bug#61244: 30.0.50; [PATCH] Promote called-interactively-p
In-Reply-To: <87sffnzrbj.fsf@dick> (dick r. chiang's message of "Thu, 02 Feb
2023 16:32:32 -0500")
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References: <87sffnzrbj.fsf@dick>
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> FUD surrounding `called-interactively-p` continues to saddle functions
> with an incongruous "interactive-p" optional argument.
If the arg is called `interactive-p` it's usually because the programmer
was too lazy to think about a good name for that arg (one which actually
describes the effect it has).
Maybe in our recommendation for the use of an extra argument, we should
make an effort to mention that (i.e. that we recommend that the arg's
name reflect the effect, and that the docstring document it
accordingly).
> `called-interactively-p` is safe enough,
I agree that `called-interactively-p` is safe: nothing bad will result
if you call it. But its return value is unreliable (when it returns
non-nil, I think it *is* reliable, but in many cases it will return nil
even tho it "should" return non-nil).
> +runtime links one to the other. When @code{called-interactively-p} is
> +invoked, tracing the stack frame of the subject function is fraught
> +given how many intervening function calls could result from arbitrary
> +macro expansions, special forms, and advices including those for
> +debugging instrumentation. The heuristics applied cannot guarantee a
> +correct result under all conceivable conditions.
Clearly, we agree on the technical aspect.
We just disagree about what conclusion to draw from it.
I personally can't recommend the use of a function for which we "cannot
guarantee a correct result under all conceivable conditions" when there
is a good alternative which does.
> + "Return t if the containing function was called interactively.
> +Be warned the function may yield an incorrect result when the
> +containing function is advised or instrumented for debugging, or
> +when the call to `called-interactively-p' is enclosed in
> +macros or special forms which wrap it in a lambda closure.
> +
> +If knowing the calling context is critical, one must modify the
> +containing function's lexical environment as described in Info
> +node `(elisp)Distinguish Interactive'.
> +
> +If KIND is \\='interactive, the function returns nil if either
> +`executing-kbd-macro' or `noninteractive' is true. The KIND
> +argument is deprecated in favor of checking those conditions
> +outside this function."
> + (let ((kind-exception (and (eq kind 'interactive)
> + (or noninteractive executing-kbd-macro))))
> + (unless kind-exception
> + ;; Call stack grows down with decreasing I.
> + ;; Walk up stack until containing function's frame reached.
> + (let* ((i 0)
> + (child (backtrace-frame i 'called-interactively-p))
> + (parent (backtrace-frame (1+ i) 'called-interactively-p))
> + (walk-up-stack
> + (lambda ()
> + (setq i (1+ i)
> + child parent
> + parent (backtrace-frame (1+ i) 'called-interactively-p)))))
> + (while (progn (funcall walk-up-stack)
> + (or
> + ;; Skip special forms from non-compiled code.
> + (and child (null (car child)))
> + ;; Skip package-specific stack-frames.
> + (let ((skip (run-hook-with-args-until-success
> + 'called-interactively-p-functions
> + (+ i 2) child parent)))
> + (pcase skip
> + ('nil nil)
> + (0 t)
> + (_ (setq i (1- (+ i skip)))
> + (funcall walk-up-stack)))))))
> + ;; CHILD should now be containing function.
> + (pcase (cons child parent)
> + ;; checks if CHILD is built-in primitive (never interactive).
> + (`((,_ ,(pred (lambda (f) (subr-primitive-p (indirect-function f)))) . ,_) . ,_)
> + nil)
> + ;; checks if PARENT is `funcall_interactively'.
> + (`(,_ . (t ,(pred (lambda (f)
> + (eq internal--funcall-interactively
> + (indirect-function f))))
> + . ,_))
> + t))))))
You describe this change as "Clarify". I don't immediately see whether
the code does the same as before nor in which sense it's more clear.
Can you describe a bit more precisely what changes you've made here?
I see you renamed the frames to `child` and `parent`, which doesn't
sound too bad.
[ One cosmetic thing I notice is that I was careful to have a single
copy of (backtrace-frame i 'called-interactively-p) whereas you now
have 3 of them. ]
> +(define-obsolete-function-alias 'interactive-p
> + #'called-interactively-p "23.2"
> + "Keep alias (https://lists.gnu.org/r/emacs-devel/2020-08/msg00564.html)")
I don't have an opinion on that.
> -/* 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.
> + 1, MANY, 0, doc: /* Differentiate from `funcall' to indicate interactive call.
> +The function `called-interactively-p' looks for this very function token.
> +This primitive should not be called from C since its very purpose
> +is to appear as a literal token in the lisp call stack.
> usage: (funcall-interactively FUNCTION &rest ARGUMENTS) */)
> (ptrdiff_t nargs, Lisp_Object *args)
> {
> specpdl_ref 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));
> }
No clear opinion on this either. I like when comments are replaced by
actual documentation, but we usually don't put into docstrings info
about whether a function can be called from C (docstrings are meant for
ELisp callers only).
> diff --git a/test/lisp/emacs-lisp/edebug-resources/edebug-test-code.el b/test/lisp/emacs-lisp/edebug-resources/edebug-test-code.el
> index b0211c915e6..b033fdddcd8 100644
> --- a/test/lisp/emacs-lisp/edebug-resources/edebug-test-code.el
> +++ b/test/lisp/emacs-lisp/edebug-resources/edebug-test-code.el
> @@ -33,6 +33,10 @@ edebug-test-code-fac
> (* n (edebug-test-code-fac (1- n)))!mult!
> 1))
>
> +(defun edebug-test-code-called-interactively-p ()
> + (interactive)
> + !start!(called-interactively-p))
> +
> (defun edebug-test-code-concat (a b flag)
> !start!(if flag!flag!
> !then-start!(concat a!then-a! b!then-b!)!then-concat!
> diff --git a/test/lisp/emacs-lisp/edebug-tests.el b/test/lisp/emacs-lisp/edebug-tests.el
> index de2fff5ef19..72ea5874cae 100644
> --- a/test/lisp/emacs-lisp/edebug-tests.el
> +++ b/test/lisp/emacs-lisp/edebug-tests.el
> @@ -56,6 +56,7 @@ edebug-tests-failure-in-post-command
> (defvar-keymap edebug-tests-keymap
> :doc "Keys used by the keyboard macros in Edebug's tests."
> "@" 'edebug-tests-call-instrumented-func
> + "#" 'edebug-tests-call-interactively-instrumented-func
> "C-u" 'universal-argument
> "C-p" 'previous-line
> "C-n" 'next-line
> @@ -268,6 +269,13 @@ edebug-tests-setup-@
> edebug-tests-args args)
> (setq edebug-tests-@-result 'no-result)))
>
> +(defun edebug-tests-call-interactively-instrumented-func ()
> + "Call interactively `edebug-tests-func' and save results."
> + (interactive)
> + (let ((result (call-interactively edebug-tests-func)))
> + (should (eq edebug-tests-@-result 'no-result))
> + (setq edebug-tests-@-result result)))
> +
> (defun edebug-tests-call-instrumented-func ()
> "Call `edebug-tests-func' with `edebug-tests-args' and save the results."
> (interactive)
> @@ -440,6 +448,14 @@ edebug-tests-stop-point-at-start-of-first-instrumented-function
> "SPC" (edebug-tests-should-be-at "fac" "step")
> "g" (should (equal edebug-tests-@-result 1)))))
>
> +(ert-deftest edebug-tests-called-interactively-p ()
> + "`called-interactively-p' still works under edebug."
> + (edebug-tests-with-normal-env
> + (edebug-tests-setup-@ "called-interactively-p" '() t)
> + (edebug-tests-run-kbd-macro
> + "#" (edebug-tests-should-be-at "called-interactively-p" "start")
> + "g" (should (equal edebug-tests-@-result t)))))
> +
> (ert-deftest edebug-tests-step-showing-evaluation-results ()
> "Edebug prints expression evaluation results to the echo area."
> (edebug-tests-with-normal-env
Are these new tests things that are fixed by your patch, or they are
just new tests "for the sake of it"?
[ In either case, I welcome new tests. ]
> diff --git a/test/lisp/emacs-lisp/nadvice-tests.el b/test/lisp/emacs-lisp/nadvice-tests.el
> index 748d42f2120..77df743a3e2 100644
> --- a/test/lisp/emacs-lisp/nadvice-tests.el
> +++ b/test/lisp/emacs-lisp/nadvice-tests.el
> @@ -145,9 +145,8 @@ advice-test-called-interactively-p-around
>
> (ert-deftest advice-test-called-interactively-p-filter-args ()
> "Check interaction between filter-args advice and called-interactively-p."
> - :expected-result :failed
> (defun sm-test7.3 () (interactive) (cons 1 (called-interactively-p)))
> - (advice-add 'sm-test7.3 :filter-args #'list)
> + (advice-add 'sm-test7.3 :filter-args #'identity)
> (should (equal (sm-test7.3) '(1 . nil)))
> (should (equal (call-interactively 'sm-test7.3) '(1 . t))))
Duh! Thanks.
> @@ -163,6 +162,18 @@ advice-test-call-interactively
> (advice-remove 'call-interactively #'ignore)
> (should (eq (symbol-function 'call-interactively) old)))))
>
> +(ert-deftest advice-test-called-interactively-p-around-careful ()
> + "Like sm-test7.2 but defensively preserve interactive context."
> + (defun sm-test7.5 () (interactive) (cons 1 (called-interactively-p)))
> + (advice-add 'sm-test7.5 :around
> + (lambda (f &rest args)
> + (list (cons 1 (called-interactively-p))
> + (if (called-interactively-p)
> + (call-interactively f)
> + (apply f args)))))
> + (should (equal (sm-test7.5) '((1 . nil) (1 . nil))))
> + (should (equal (call-interactively 'sm-test7.5) '((1 . t) (1 . t)))))
> +
> (ert-deftest advice-test-interactive ()
> "Check handling of interactive spec."
> (defun sm-test8 (a) (interactive "p") a)
I'd use `funcall-interactively` rather than `call-interactively` so as
to correctly preserve `args` rather than recreate them.
Stefan
bug-gnu-emacs@HIDDEN:bug#61244; Package emacs.
Full text available.Received: (at 61244) by debbugs.gnu.org; 3 Feb 2023 07:35:50 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Feb 03 02:35:50 2023 Received: from localhost ([127.0.0.1]:36404 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1pNqbu-00067P-3q for submit <at> debbugs.gnu.org; Fri, 03 Feb 2023 02:35:50 -0500 Received: from eggs.gnu.org ([209.51.188.92]:40058) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1pNqbr-00067B-EC for 61244 <at> debbugs.gnu.org; Fri, 03 Feb 2023 02:35:48 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pNqbl-0000kW-BW; Fri, 03 Feb 2023 02:35:41 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=RRBvU1UmCjTJcX8xNdguloj1SVWXF2zdTO9eJ7tGg70=; b=rdl+TLyw21Ka Nv+nL3b7o0v+lvUl37laTwlqhF/dViOtvp5yyUk5fjTz1VOi3lqXbW79UL7tgrMi0wrJSLT4SJ/mp JaypHU1YDVP61wd4tjBEdsf8q1CUVk+NK5JX7cFbz6/cclcy/ZnVhZgVtyKCcABjb27nk64QHe1+b 08M0PBpgG8bwBazBoyW1ehcrtTCemKGvhXAU5OrUvl544I2oYpLBjVHvg+OqqCdxDZeuIYkWrHUIE UtBXGBRVMgOeslPClScr9kbsIat3ypa5EE4UovziarIBWZ0F1lI6mZxv3oFqIBA0nQLD5NX6/2EaN 2avR8huhTfb+S2GY8/fKIQ==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1pNqbh-0001H3-J1; Fri, 03 Feb 2023 02:35:40 -0500 Date: Fri, 03 Feb 2023 09:35:41 +0200 Message-Id: <83y1pfuroy.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: dick.r.chiang@HIDDEN, Stefan Monnier <monnier@HIDDEN> In-Reply-To: <87sffnzrbj.fsf@dick> (dick.r.chiang@HIDDEN) Subject: Re: bug#61244: 30.0.50; [PATCH] Promote called-interactively-p References: <87sffnzrbj.fsf@dick> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 61244 Cc: 61244 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: dick.r.chiang@HIDDEN > Date: Thu, 02 Feb 2023 16:32:32 -0500 > > FUD surrounding `called-interactively-p` continues to saddle > functions with an incongruous "interactive-p" optional > argument. `called-interactively-p` is safe enough, and if not, > no one is going to miss whatever trivial behaviors hinge > on its correctness. Please explain the rationale and the effects of the code in more detail, otherwise this is impossible to consider. Stefan, any comments or insights?
bug-gnu-emacs@HIDDEN:bug#61244; Package emacs.
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From: dick.r.chiang@HIDDEN
To: bug-gnu-emacs <bug-gnu-emacs@HIDDEN>
Subject: 30.0.50; [PATCH] Promote called-interactively-p
Date: Thu, 02 Feb 2023 16:32:32 -0500
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FUD surrounding `called-interactively-p` continues to saddle
functions with an incongruous "interactive-p" optional
argument. `called-interactively-p` is safe enough, and if not,
no one is going to miss whatever trivial behaviors hinge
on its correctness.
--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
filename=0001-Promote-called-interactively-p.patch
From 0e638368eeef35136b2c8126e2a2e0e8fd0aa47d Mon Sep 17 00:00:00 2001
From: dickmao <dick.r.chiang@HIDDEN>
Date: Thu, 2 Feb 2023 16:20:04 -0500
Subject: [PATCH] Promote called-interactively-p
* doc/lispref/commands.texi (Distinguish Interactive): Promote.
* lisp/subr.el (called-interactively-p): Clarify.
(interactive-p): Alias.
* src/callint.c (Ffuncall_interactively): Clarify.
* test/lisp/emacs-lisp/edebug-resources/edebug-test-code.el
(edebug-test-code-called-interactively-p): Test.
* test/lisp/emacs-lisp/edebug-tests.el (edebug-tests-keymap): Test.
(edebug-tests-call-interactively-instrumented-func): Test.
(edebug-tests-called-interactively-p): Test.
* test/lisp/emacs-lisp/nadvice-tests.el
(advice-test-called-interactively-p-filter-args): Fix.
(advice-test-called-interactively-p-around-careful): Test.
---
doc/lispref/commands.texi | 96 +++++------
lisp/subr.el | 152 +++++++-----------
src/callint.c | 12 +-
.../edebug-resources/edebug-test-code.el | 4 +
test/lisp/emacs-lisp/edebug-tests.el | 16 ++
test/lisp/emacs-lisp/nadvice-tests.el | 15 +-
6 files changed, 135 insertions(+), 160 deletions(-)
diff --git a/doc/lispref/commands.texi b/doc/lispref/commands.texi
index dc78adc4520..b02b6ba470a 100644
--- a/doc/lispref/commands.texi
+++ b/doc/lispref/commands.texi
@@ -906,61 +906,15 @@ Distinguish Interactive
@cindex distinguish interactive calls
@cindex is this call interactive
- Sometimes a command should display additional visual feedback (such
-as an informative message in the echo area) for interactive calls
-only. There are three ways to do this. The recommended way to test
-whether the function was called using @code{call-interactively} is to
-give it an optional argument @code{print-message} and use the
-@code{interactive} spec to make it non-@code{nil} in interactive
-calls. Here's an example:
-
-@example
-(defun foo (&optional print-message)
- (interactive "p")
- (when print-message
- (message "foo")))
-@end example
-
-@noindent
-We use @code{"p"} because the numeric prefix argument is never
-@code{nil}. Defined in this way, the function does display the
-message when called from a keyboard macro.
-
- The above method with the additional argument is usually best,
-because it allows callers to say ``treat this call as interactive''.
-But you can also do the job by testing @code{called-interactively-p}.
-
-@defun called-interactively-p kind
-This function returns @code{t} when the calling function was called
-using @code{call-interactively}.
-
-The argument @var{kind} should be either the symbol @code{interactive}
-or the symbol @code{any}. If it is @code{interactive}, then
-@code{called-interactively-p} returns @code{t} only if the call was
-made directly by the user---e.g., if the user typed a key sequence
-bound to the calling function, but @emph{not} if the user ran a
-keyboard macro that called the function (@pxref{Keyboard Macros}). If
-@var{kind} is @code{any}, @code{called-interactively-p} returns
-@code{t} for any kind of interactive call, including keyboard macros.
-
-If in doubt, use @code{any}; the only known proper use of
-@code{interactive} is if you need to decide whether to display a
-helpful message while a function is running.
-
-A function is never considered to be called interactively if it was
-called via Lisp evaluation (or with @code{apply} or @code{funcall}).
-@end defun
-
-@noindent
-Here is an example of using @code{called-interactively-p}:
+ Generally, use @code{called-interactively-p} to determine whether
+the current function's context is interactive.
@example
@group
(defun foo ()
(interactive)
- (when (called-interactively-p 'any)
- (message "Interactive!")
- 'foo-called-interactively))
+ (when (called-interactively-p)
+ (message "Interactive!")))
@end group
@group
@@ -975,14 +929,13 @@ Distinguish Interactive
@end example
@noindent
-Here is another example that contrasts direct and indirect calls to
-@code{called-interactively-p}.
+Contrast direct and indirect calls to @code{called-interactively-p}.
@example
@group
(defun bar ()
(interactive)
- (message "%s" (list (foo) (called-interactively-p 'any))))
+ (message "%s" (list (foo) (called-interactively-p))))
@end group
@group
@@ -991,6 +944,43 @@ Distinguish Interactive
@end group
@end example
+ While the call site of @code{called-interactively-p} may lexically
+reside within the body of the subject function, nothing in the Lisp
+runtime links one to the other. When @code{called-interactively-p} is
+invoked, tracing the stack frame of the subject function is fraught
+given how many intervening function calls could result from arbitrary
+macro expansions, special forms, and advices including those for
+debugging instrumentation. The heuristics applied cannot guarantee a
+correct result under all conceivable conditions.
+
+ What is guaranteed is a function's lexical environment. If
+distinguishing interactive is critical, instead add to the subject
+function an optional argument with interactive spec @code{p} (or
+another code that cannot take on a @code{nil} value). This argument
+is thus assured to be non-@code{nil} when the subject function assigns
+arguments via the @code{interactive} form. For example the following
+function:
+
+@example
+(defun foo (bar)
+ (interactive (list "bar"))
+ (called-interactively-p))
+@end example
+
+@noindent
+could be rewritten
+
+@example
+(defun foo (bar &optional interactive-p)
+ (interactive "i\np")
+ (when interactive-p
+ (setq bar "bar"))
+ interactive-p)
+@end example
+
+@noindent
+at the cost of obfuscation.
+
@node Command Loop Info
@section Information from the Command Loop
@cindex command loop variables
diff --git a/lisp/subr.el b/lisp/subr.el
index f909b63aabe..3a213fc56c8 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -6061,103 +6061,61 @@ internal--funcall-interactively
(symbol-function 'funcall-interactively))
(defun called-interactively-p (&optional kind)
- "Return t if the containing function was called by `call-interactively'.
-If KIND is `interactive', then return t only if the call was made
-interactively by the user, i.e. not in `noninteractive' mode nor
-when `executing-kbd-macro'.
-If KIND is `any', on the other hand, it will return t for any kind of
-interactive call, including being called as the binding of a key or
-from a keyboard macro, even in `noninteractive' mode.
-
-This function is very brittle, it may fail to return the intended result when
-the code is debugged, advised, or instrumented in some form. Some macros and
-special forms (such as `condition-case') may also sometimes wrap their bodies
-in a `lambda', so any call to `called-interactively-p' from those bodies will
-indicate whether that lambda (rather than the surrounding function) was called
-interactively.
-
-Instead of using this function, it is cleaner and more reliable to give your
-function an extra optional argument whose `interactive' spec specifies
-non-nil unconditionally (\"p\" is a good way to do this), or via
-\(not (or executing-kbd-macro noninteractive)).
-
-The only known proper use of `interactive' for KIND is in deciding
-whether to display a helpful message, or how to display it. If you're
-thinking of using it for any other purpose, it is quite likely that
-you're making a mistake. Think: what do you want to do when the
-command is called from a keyboard macro?"
- (declare (advertised-calling-convention (kind) "23.1"))
- (when (not (and (eq kind 'interactive)
- (or executing-kbd-macro noninteractive)))
- (let* ((i 1) ;; 0 is the called-interactively-p frame.
- frame nextframe
- (get-next-frame
- (lambda ()
- (setq frame nextframe)
- (setq nextframe (backtrace-frame i 'called-interactively-p))
- ;; (message "Frame %d = %S" i nextframe)
- (setq i (1+ i)))))
- (funcall get-next-frame) ;; Get the first frame.
- (while
- ;; FIXME: The edebug and advice handling should be made modular and
- ;; provided directly by edebug.el and nadvice.el.
- (progn
- ;; frame =(backtrace-frame i-2)
- ;; nextframe=(backtrace-frame i-1)
- (funcall get-next-frame)
- ;; `pcase' would be a fairly good fit here, but it sometimes moves
- ;; branches within local functions, which then messes up the
- ;; `backtrace-frame' data we get,
- (or
- ;; Skip special forms (from non-compiled code).
- (and frame (null (car frame)))
- ;; Skip also `interactive-p' (because we don't want to know if
- ;; interactive-p was called interactively but if it's caller was).
- (eq (nth 1 frame) 'interactive-p)
- ;; Skip package-specific stack-frames.
- (let ((skip (run-hook-with-args-until-success
- 'called-interactively-p-functions
- i frame nextframe)))
- (pcase skip
- ('nil nil)
- (0 t)
- (_ (setq i (+ i skip -1)) (funcall get-next-frame)))))))
- ;; Now `frame' should be "the function from which we were called".
- (pcase (cons frame nextframe)
- ;; No subr calls `interactive-p', so we can rule that out.
- (`((,_ ,(pred (lambda (f) (subr-primitive-p (indirect-function f)))) . ,_) . ,_) nil)
- ;; In case #<subr funcall-interactively> without going through the
- ;; `funcall-interactively' symbol (bug#3984).
- (`(,_ . (t ,(pred (lambda (f)
- (eq internal--funcall-interactively
- (indirect-function f))))
- . ,_))
- t)))))
-
-(defun interactive-p ()
- "Return t if the containing function was run directly by user input.
-This means that the function was called with `call-interactively'
-\(which includes being called as the binding of a key)
-and input is currently coming from the keyboard (not a keyboard macro),
-and Emacs is not running in batch mode (`noninteractive' is nil).
-
-The only known proper use of `interactive-p' is in deciding whether to
-display a helpful message, or how to display it. If you're thinking
-of using it for any other purpose, it is quite likely that you're
-making a mistake. Think: what do you want to do when the command is
-called from a keyboard macro or in batch mode?
-
-To test whether your function was called with `call-interactively',
-either (i) add an extra optional argument and give it an `interactive'
-spec that specifies non-nil unconditionally (such as \"p\"); or (ii)
-use `called-interactively-p'.
-
-To test whether a function can be called interactively, use
-`commandp'."
- ;; Kept around for now. See discussion at:
- ;; https://lists.gnu.org/r/emacs-devel/2020-08/msg00564.html
- (declare (obsolete called-interactively-p "23.2"))
- (called-interactively-p 'interactive))
+ "Return t if the containing function was called interactively.
+Be warned the function may yield an incorrect result when the
+containing function is advised or instrumented for debugging, or
+when the call to `called-interactively-p' is enclosed in
+macros or special forms which wrap it in a lambda closure.
+
+If knowing the calling context is critical, one must modify the
+containing function's lexical environment as described in Info
+node `(elisp)Distinguish Interactive'.
+
+If KIND is \\='interactive, the function returns nil if either
+`executing-kbd-macro' or `noninteractive' is true. The KIND
+argument is deprecated in favor of checking those conditions
+outside this function."
+ (let ((kind-exception (and (eq kind 'interactive)
+ (or noninteractive executing-kbd-macro))))
+ (unless kind-exception
+ ;; Call stack grows down with decreasing I.
+ ;; Walk up stack until containing function's frame reached.
+ (let* ((i 0)
+ (child (backtrace-frame i 'called-interactively-p))
+ (parent (backtrace-frame (1+ i) 'called-interactively-p))
+ (walk-up-stack
+ (lambda ()
+ (setq i (1+ i)
+ child parent
+ parent (backtrace-frame (1+ i) 'called-interactively-p)))))
+ (while (progn (funcall walk-up-stack)
+ (or
+ ;; Skip special forms from non-compiled code.
+ (and child (null (car child)))
+ ;; Skip package-specific stack-frames.
+ (let ((skip (run-hook-with-args-until-success
+ 'called-interactively-p-functions
+ (+ i 2) child parent)))
+ (pcase skip
+ ('nil nil)
+ (0 t)
+ (_ (setq i (1- (+ i skip)))
+ (funcall walk-up-stack)))))))
+ ;; CHILD should now be containing function.
+ (pcase (cons child parent)
+ ;; checks if CHILD is built-in primitive (never interactive).
+ (`((,_ ,(pred (lambda (f) (subr-primitive-p (indirect-function f)))) . ,_) . ,_)
+ nil)
+ ;; checks if PARENT is `funcall_interactively'.
+ (`(,_ . (t ,(pred (lambda (f)
+ (eq internal--funcall-interactively
+ (indirect-function f))))
+ . ,_))
+ t))))))
+
+(define-obsolete-function-alias 'interactive-p
+ #'called-interactively-p "23.2"
+ "Keep alias (https://lists.gnu.org/r/emacs-devel/2020-08/msg00564.html)")
(defun internal-push-keymap (keymap symbol)
(let ((map (symbol-value symbol)))
diff --git a/src/callint.c b/src/callint.c
index d8d2b278458..6259f7d0caa 100644
--- a/src/callint.c
+++ b/src/callint.c
@@ -233,20 +233,16 @@ read_file_name (Lisp_Object default_filename, Lisp_Object mustmatch,
mustmatch, initial, predicate);
}
-/* 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.
+ 1, MANY, 0, doc: /* Differentiate from `funcall' to indicate interactive call.
+The function `called-interactively-p' looks for this very function token.
+This primitive should not be called from C since its very purpose
+is to appear as a literal token in the lisp call stack.
usage: (funcall-interactively FUNCTION &rest ARGUMENTS) */)
(ptrdiff_t nargs, Lisp_Object *args)
{
specpdl_ref 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));
}
diff --git a/test/lisp/emacs-lisp/edebug-resources/edebug-test-code.el b/test/lisp/emacs-lisp/edebug-resources/edebug-test-code.el
index b0211c915e6..b033fdddcd8 100644
--- a/test/lisp/emacs-lisp/edebug-resources/edebug-test-code.el
+++ b/test/lisp/emacs-lisp/edebug-resources/edebug-test-code.el
@@ -33,6 +33,10 @@ edebug-test-code-fac
(* n (edebug-test-code-fac (1- n)))!mult!
1))
+(defun edebug-test-code-called-interactively-p ()
+ (interactive)
+ !start!(called-interactively-p))
+
(defun edebug-test-code-concat (a b flag)
!start!(if flag!flag!
!then-start!(concat a!then-a! b!then-b!)!then-concat!
diff --git a/test/lisp/emacs-lisp/edebug-tests.el b/test/lisp/emacs-lisp/edebug-tests.el
index de2fff5ef19..72ea5874cae 100644
--- a/test/lisp/emacs-lisp/edebug-tests.el
+++ b/test/lisp/emacs-lisp/edebug-tests.el
@@ -56,6 +56,7 @@ edebug-tests-failure-in-post-command
(defvar-keymap edebug-tests-keymap
:doc "Keys used by the keyboard macros in Edebug's tests."
"@" 'edebug-tests-call-instrumented-func
+ "#" 'edebug-tests-call-interactively-instrumented-func
"C-u" 'universal-argument
"C-p" 'previous-line
"C-n" 'next-line
@@ -268,6 +269,13 @@ edebug-tests-setup-@
edebug-tests-args args)
(setq edebug-tests-@-result 'no-result)))
+(defun edebug-tests-call-interactively-instrumented-func ()
+ "Call interactively `edebug-tests-func' and save results."
+ (interactive)
+ (let ((result (call-interactively edebug-tests-func)))
+ (should (eq edebug-tests-@-result 'no-result))
+ (setq edebug-tests-@-result result)))
+
(defun edebug-tests-call-instrumented-func ()
"Call `edebug-tests-func' with `edebug-tests-args' and save the results."
(interactive)
@@ -440,6 +448,14 @@ edebug-tests-stop-point-at-start-of-first-instrumented-function
"SPC" (edebug-tests-should-be-at "fac" "step")
"g" (should (equal edebug-tests-@-result 1)))))
+(ert-deftest edebug-tests-called-interactively-p ()
+ "`called-interactively-p' still works under edebug."
+ (edebug-tests-with-normal-env
+ (edebug-tests-setup-@ "called-interactively-p" '() t)
+ (edebug-tests-run-kbd-macro
+ "#" (edebug-tests-should-be-at "called-interactively-p" "start")
+ "g" (should (equal edebug-tests-@-result t)))))
+
(ert-deftest edebug-tests-step-showing-evaluation-results ()
"Edebug prints expression evaluation results to the echo area."
(edebug-tests-with-normal-env
diff --git a/test/lisp/emacs-lisp/nadvice-tests.el b/test/lisp/emacs-lisp/nadvice-tests.el
index 748d42f2120..77df743a3e2 100644
--- a/test/lisp/emacs-lisp/nadvice-tests.el
+++ b/test/lisp/emacs-lisp/nadvice-tests.el
@@ -145,9 +145,8 @@ advice-test-called-interactively-p-around
(ert-deftest advice-test-called-interactively-p-filter-args ()
"Check interaction between filter-args advice and called-interactively-p."
- :expected-result :failed
(defun sm-test7.3 () (interactive) (cons 1 (called-interactively-p)))
- (advice-add 'sm-test7.3 :filter-args #'list)
+ (advice-add 'sm-test7.3 :filter-args #'identity)
(should (equal (sm-test7.3) '(1 . nil)))
(should (equal (call-interactively 'sm-test7.3) '(1 . t))))
@@ -163,6 +162,18 @@ advice-test-call-interactively
(advice-remove 'call-interactively #'ignore)
(should (eq (symbol-function 'call-interactively) old)))))
+(ert-deftest advice-test-called-interactively-p-around-careful ()
+ "Like sm-test7.2 but defensively preserve interactive context."
+ (defun sm-test7.5 () (interactive) (cons 1 (called-interactively-p)))
+ (advice-add 'sm-test7.5 :around
+ (lambda (f &rest args)
+ (list (cons 1 (called-interactively-p))
+ (if (called-interactively-p)
+ (call-interactively f)
+ (apply f args)))))
+ (should (equal (sm-test7.5) '((1 . nil) (1 . nil))))
+ (should (equal (call-interactively 'sm-test7.5) '((1 . t) (1 . t)))))
+
(ert-deftest advice-test-interactive ()
"Check handling of interactive spec."
(defun sm-test8 (a) (interactive "p") a)
--
2.38.1
--=-=-=
Content-Type: text/plain
In Commercial Emacs 0.3.1snapshot b8701a3 in dev (upstream 30.0.50,
x86_64-pc-linux-gnu) built on dick
Repository revision: b8701a32dad52e26fcf72ce39c9b631c777a1927
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Windowing system distributor 'The X.Org Foundation', version 11.0.12101003
System Description: Ubuntu 22.04.1 LTS
Configured using:
'configure WERROR_CFLAGS=-Werror --prefix=/home/dick/.local
--with-tree-sitter CC=gcc-10
PKG_CONFIG_PATH=/home/dick/.local/lib/pkgconfig CXX=gcc-10'
Configured features:
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/home/dick/.emacs.d/elpa/chess-2.0.5/chess-link hides /home/dick/.local/share/emacs/site-lisp/chess-link
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-transport hides /home/dick/.local/share/emacs/site-lisp/chess-transport
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-none hides /home/dick/.local/share/emacs/site-lisp/chess-none
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-polyglot hides /home/dick/.local/share/emacs/site-lisp/chess-polyglot
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-crafty hides /home/dick/.local/share/emacs/site-lisp/chess-crafty
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/home/dick/.emacs.d/elpa/chess-2.0.5/chess-gnuchess hides /home/dick/.local/share/emacs/site-lisp/chess-gnuchess
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-fen hides /home/dick/.local/share/emacs/site-lisp/chess-fen
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-ics hides /home/dick/.local/share/emacs/site-lisp/chess-ics
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-ics2 hides /home/dick/.local/share/emacs/site-lisp/chess-ics2
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/home/dick/.emacs.d/elpa/chess-2.0.5/chess-sjeng hides /home/dick/.local/share/emacs/site-lisp/chess-sjeng
/home/dick/.emacs.d/elpa/chess-2.0.5/chess-algebraic hides /home/dick/.local/share/emacs/site-lisp/chess-algebraic
/home/dick/.emacs.d/elpa/transient-0.3.7snapshot/transient hides /home/dick/.local/share/emacs/0.3.1/lisp/transient
/home/dick/.emacs.d/elpa/use-package-20200520.2305/use-package-bind-key hides /home/dick/.local/share/emacs/0.3.1/lisp/use-package/use-package-bind-key
/home/dick/.emacs.d/elpa/use-package-20200520.2305/use-package-lint hides /home/dick/.local/share/emacs/0.3.1/lisp/use-package/use-package-lint
/home/dick/.emacs.d/elpa/use-package-20200520.2305/use-package-core hides /home/dick/.local/share/emacs/0.3.1/lisp/use-package/use-package-core
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/home/dick/.emacs.d/elpa/bind-key-20161218.1520/bind-key hides /home/dick/.local/share/emacs/0.3.1/lisp/use-package/bind-key
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/home/dick/.emacs.d/elpa/eglot-1.8/eglot hides /home/dick/.local/share/emacs/0.3.1/lisp/progmodes/eglot
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Features:
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magit-submodule magit-obsolete magit-blame magit-stash magit-reflog
magit-bisect magit-push magit-pull magit-fetch magit-clone magit-remote
magit-commit magit-sequence magit-notes magit-worktree magit-tag
magit-merge magit-branch magit-reset magit-files magit-refs magit-status
magit magit-repos magit-apply magit-wip magit-log which-func imenu
magit-diff smerge-mode diff git-commit log-edit pcvs-util add-log
magit-core magit-autorevert magit-margin magit-transient magit-process
with-editor shell pcomplete server magit-mode transient magit-git
magit-base magit-section format-spec misearch multi-isearch vc-git
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elpaso-admin elpaso-milky elpaso-defs shortdoc cal-menu calendar
cal-loaddefs gnus-html url-queue help-fns radix-tree sort smiley
flow-fill mm-archive mail-extr textsec uni-scripts idna-mapping
ucs-normalize uni-confusable textsec-check gnus-async gnus-ml
gnus-notifications gnus-fun notifications gnus-kill gnus-dup disp-table
utf-7 url-cache benchmark nnrss nnfolder nndiscourse rbenv nnhackernews
nntwitter nntwitter-api bbdb-gnus gnus-demon nntp nnmairix nnml nnreddit
gnus-topic url-http url-auth url-gw network-stream nsm request
virtualenvwrapper gud s dash json-rpc python compat gnus-score
score-mode gnus-bcklg gnus-srvr gnus-cite anaphora bbdb-mua bbdb-com crm
bbdb bbdb-site timezone gnus-delay gnus-draft gnus-cache gnus-agent
gnus-msg gnus-art mm-uu mml2015 mm-view mml-smime smime gnutls dig
gnus-sum shr pixel-fill kinsoku url-file svg dom nndraft nnmh gnus-group
mm-url gnus-undo use-package use-package-ensure use-package-delight
use-package-diminish gnus-start gnus-dbus dbus xml gnus-cloud nnimap
nnmail mail-source utf7 nnoo parse-time iso8601 gnus-spec gnus-int
gnus-range message sendmail yank-media puny dired-x dired dired-loaddefs
rfc822 mml mml-sec epa epg rfc6068 epg-config mm-decode mm-bodies
mm-encode mail-parse rfc2231 rfc2047 rfc2045 ietf-drums mailabbrev
gmm-utils mailheader gnus-win paredit-ext paredit inf-ruby ruby-mode
smie haskell-interactive-mode haskell-presentation-mode haskell-process
haskell-session haskell-compile haskell-mode haskell-cabal haskell-utils
haskell-font-lock haskell-indentation haskell-string
haskell-sort-imports haskell-lexeme rx haskell-align-imports
haskell-complete-module haskell-ghc-support noutline outline
flymake-proc flymake etags fileloop generator dabbrev haskell-customize
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ibuffer ibuffer-loaddefs thingatpt grep compile comint ansi-osc
ansi-color gnus nnheader range mail-utils mm-util mail-prsvr gnus-util
text-property-search time-date xlsp xlsp-xref xlsp-server xlsp-company
company-capf company xlsp-handle-notification xlsp-handle-request
xlsp-struct xlsp-utils jsonrpc pcase warnings hl-line autorevert
filenotify flx-ido flx google-translate-default-ui
google-translate-core-ui facemenu color ido google-translate-core
google-translate-tk google-translate-backend auto-complete advice popup
cus-edit pp cus-load icons wid-edit emms-player-mplayer
emms-player-simple emms emms-compat winner edmacro kmacro cl-extra
help-mode xref project ring use-package-bind-key bind-key easy-mmode
use-package-core derived company-go-autoloads wordnut-autoloads
quelpa-autoloads haskell-mode-autoloads xlsp-autoloads debbugs-autoloads
eglot-autoloads emacsql-autoloads corfu-autoloads elpaso-disc-autoloads
elpaso-autoloads find-func sml-mode-autoloads json-reformat-autoloads
typescript-mode-autoloads projectile-autoloads nnreddit-autoloads
json-snatcher-autoloads yasnippet-autoloads
tornado-template-mode-autoloads flycheck-autoloads request-autoloads
lsp-mode-autoloads lv-autoloads lsp-bridge-autoloads posframe-autoloads
magit-autoloads magit-section-autoloads cask-autoloads epl-autoloads
markdown-mode-autoloads go-mode-autoloads dash-autoloads
company-autoloads git-commit-autoloads info compat-autoloads package
browse-url url url-proxy url-privacy url-expand url-methods url-history
url-cookie generate-lisp-file url-domsuf url-util mailcap url-handlers
url-parse auth-source cl-seq eieio eieio-core cl-macs password-cache
json subr-x map byte-opt gv bytecomp byte-compile cldefs url-vars
cl-loaddefs cl-lib rmc iso-transl tooltip cconv eldoc paren electric
uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel
term/x-win x-win term/common-win x-dnd tool-bar dnd fontset image
regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode
prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu
timer select scroll-bar mouse jit-lock font-lock syntax font-core
term/tty-colors frame minibuffer nadvice seq simple cl-generic
indonesian philippine cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
composite emoji-zwj charscript charprop case-table epa-hook
jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
theme-loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads dbusbind inotify lcms2
dynamic-setting system-font-setting font-render-setting cairo
move-toolbar gtk x-toolkit xinput2 x multi-tty make-network-process
emacs)
Memory information:
((conses 16 1137562 104422)
(symbols 48 48318 2)
(strings 32 221450 44809)
(string-bytes 1 6892398)
(vectors 16 136619)
(vector-slots 8 3121891 105090)
(floats 8 1271 1705)
(intervals 56 19769 1249)
(buffers 984 46))
--=-=-=--
dick.r.chiang@HIDDEN:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#61244; Package emacs.
Full text available.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.