From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.help Subject: Re: Calling a function with undefined symbol Date: Wed, 09 Nov 2022 16:59:01 +0100 Message-ID: <87a650ruey.fsf@web.de> References: <87wn8dzh6o.fsf@web.de> <877d0d8g3e.fsf@web.de> <87zgd9ot4p.fsf@dataswamp.org> <87r0yk9tw6.fsf@web.de> <87o7toi68e.fsf@dataswamp.org> <87tu3egbj2.fsf@web.de> <87sfixfp5p.fsf@dataswamp.org> <874jvd9eb1.fsf@web.de> <87leonbzy1.fsf@dataswamp.org> <87v8nqlpjk.fsf@web.de> <87wn86ogg8.fsf@dataswamp.org> <87a65178ah.fsf@web.de> <87mt910zr6.fsf@web.de> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="25228"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed Nov 09 17:00:13 2022 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1osnUq-0006OF-Nn for geh-help-gnu-emacs@m.gmane-mx.org; 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Wed, 09 Nov 2022 16:59:02 +0100 In-Reply-To: (Sam Steingold's message of "Wed, 09 Nov 2022 10:32:36 -0500") X-Provags-ID: V03:K1:BXdQU3raTtGYhkcAle0wC50Qi0jz3TXyiciyBn5EIqSqLkmdV40 XiL9gFG0GYsd0Qau+8XUVAuvtjuIo3ZeEST3pvrWu6D7cmx/3jUB5L1/97YzbZwZk7TA1Xa jY9pObrjVFgaQHRXaQOORXFTZqXeRjoy7I9LsMxJgVMwTyl61zwHl2VAkvAmqPEXXkXv3Mt Wgq+ZBR9+f9TeqzuC8+Ig== UI-OutboundReport: notjunk:1;M01:P0:Ukyu1CezGp8=;1vVEUw5yjFt1XLkIb43DFsnrsR9 Yz+FuH8tIFsQLnbKjeuBW8OBP9Mh2U6KQqqL8TLF7dWbRTfFcT2kbJCiU5ZdFUfgJJibTFfLO g+ZaLZMu5SNFyoaDmb+HRZgleGWP0BMLH1W7YCQVyYYKts3w4DYiu5uWYeV4zKGBlC4Bx0ftx SpGLQWnM6oG8HK3bLZvGvuabsVlrR2U1YrUMEl8+UgnyTaxy0lEPfglkEHYAOCkPXISA2gxLD GDAJK60wq5kUuyE9tqu5U1r+GIWHB6GquWk02lRGVljFGb99KzPIOrtaL6BTznUcMHl6lO/+H aihNDs3zEpyeeJJCZHG/YV/Lt0uJmER5zzfqhntzz/QnzMJ2wwX4jEP7m//5YGzHamaeWYXjD IxS8jUoOyKKMnWl3qbOQ83ebE+2huaNzl/9SWCYePG+NMx+GHSwLnnzyDmKQxRvHOj0ssIZSp TEGQwFnE06Y/7vp62v6f47WbSeJFojLp3OPz2NqMWNSSYbQRkxukmttaENN0I/Q3/Xc9ihVrC ufCnt3GE6+hLbqIxb7cCrgfQgJ0lyiUJJyGzB8wru/uhE4ch2sdZwNaP+phkfiUjix5LTamww i1Q6zMPeLQlNcQDyfJ3K1vezQcTA3IZzz8vPnke3lYLwa/YK7wf7iuHusU9EDq9v82QW0SAW+ lEjMiEv0tJpA1dEG1zo3kmN8IZAJOCKnKwGrkLnAmxmYRXzjMFrsljowoZRsD+rBJefWJ9VUf YqePWAVof5RnIIm0vfVXgmXRk/2XBPihY0+OJqDZsGQIh8folz7v2dd/7Cdu7mtfV7XCh/py Received-SPF: pass client-ip=212.227.15.3; envelope-from=michael_heerdegen@web.de; helo=mout.web.de X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:140871 Archived-At: Sam Steingold writes: > > * Michael Heerdegen [2022-11-09 00:53:33 > > +0100]: > > > > Sam Steingold writes: > > > >> ((lambda (x) `(,x ',x)) (lambda (x) `(,x ',x))) > > > > (#1=(lambda (x) '(#1# '#1#)) #1#) > > Nah, (#1=(lambda (x) `(,x ',x)) #1#) Yes, I was wrong two times: the first time when I posted the wrong counterpart of the quote-quine. My version without quoting was a slightly different thing because evaluation didn't stop. Your version fits better. And (lambda (x) '(#1# '#1#)) is nonsense because it ignores the argument. But why not ((lambda (x) `(,x ,x)) (lambda (x) `(,x ,x))) - why do you quote the second list element? I guess you want to avoid that the lambda is evaluated and gets a closure, but then you want ((lambda (x) `(,x ',x)) '(lambda (x) `(,x ',x))) ^ > I would rather avoid circular lists _in code_. I had been wondering about the question: If ((lambda (x) `(,x ',x)) (lambda (x) `(,x ',x))) is the version for n=1 arguments, how would a version for n=0 look like? Then you could either construct (a) an expression that returns the n=0 counterpart, which is easy, or give (b) an expression that is the counterpart itself. Then I think you need circular code because the function does not receive an argument: (#1=(lambda () '(#1#))) Michael.