From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Philip Kaludercic Newsgroups: gmane.emacs.bugs Subject: bug#54374: 29.0.50; previous-completion fails at beginning of completions buffer Date: Mon, 14 Mar 2022 13:34:26 +0000 Message-ID: <875yog4pzx.fsf@posteo.net> References: <86h782b3zk.fsf@mail.linkov.net> <871qz5k2na.fsf@posteo.net> <83bky9kyk2.fsf@gnu.org> <87wngx9c8i.fsf@posteo.net> <83wngwk7vh.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="31769"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 54374@debbugs.gnu.org, juri@linkov.net To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Mon Mar 14 14:39:20 2022 Return-path: Envelope-to: geb-bug-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 1nTkut-000806-Aw for geb-bug-gnu-emacs@m.gmane-mx.org; 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Mon, 14 Mar 2022 14:34:27 +0100 (CET) Autocrypt: addr=philipk@posteo.net; prefer-encrypt=nopreference; keydata= mDMEYHHqUhYJKwYBBAHaRw8BAQdAp3GdmYJ6tm5McweY6dEvIYIiry+Oz9rU4MH6NHWK0Ee0QlBo aWxpcCBLYWx1ZGVyY2ljIChnZW5lcmF0ZWQgYnkgYXV0b2NyeXB0LmVsKSA8cGhpbGlwa0Bwb3N0 ZW8ubmV0PoiQBBMWCAA4FiEEDM2H44ZoPt9Ms0eHtVrAHPRh1FwFAmBx6lICGwMFCwkIBwIGFQoJ CAsCBBYCAwECHgECF4AACgkQtVrAHPRh1FyTkgEAjlbGPxFchvMbxzAES3r8QLuZgCxeAXunM9gh io0ePtUBALVhh9G6wIoZhl0gUCbQpoN/UJHI08Gm1qDob5zDxnIHuDgEYHHqUhIKKwYBBAGXVQEF AQEHQNcRB+MUimTMqoxxMMUERpOR+Q4b1KgncDZkhrO2ql1tAwEIB4h4BBgWCAAgFiEEDM2H44Zo Pt9Ms0eHtVrAHPRh1FwFAmBx6lICGwwACgkQtVrAHPRh1Fw1JwD/Qo7kvtib8jy7puyWrSv0MeTS g8qIxgoRWJE/KKdkCLEA/jb9b9/g8nnX+UcwHf/4VfKsjExlnND3FrBviXUW6NcB In-Reply-To: <83wngwk7vh.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 14 Mar 2022 14:59:14 +0200") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:228357 Archived-At: Eli Zaretskii writes: >> From: Philip Kaludercic >> Cc: juri@linkov.net, 54374@debbugs.gnu.org >> Date: Mon, 14 Mar 2022 08:20:29 +0000 >> >> Eli Zaretskii writes: >> >> >> From: Philip Kaludercic >> >> Date: Sun, 13 Mar 2022 20:39:53 +0000 >> >> Cc: 54374@debbugs.gnu.org >> >> >> >> - (while (< n 0) >> >> + (while (and (< n 0) (< 1 (point))) >> > >> > Please always use point-min, never a literal 1. >> >> Can do, but does it make a difference in this case? The only reason the >> comparison is made is so that (1- (point)) doesn't return an invalid >> point value. > > Any buffer position outside of the accessible portion of the buffer is > almost always invalid; the number of APIs which tolerate such values > of buffer position is very small. > > Here, try this: > > emacs -Q > M-: (narrow-to-region 20 (point-max)) RET > M-: (get-text-property 1 'mouse-face) RET > > You will get the same args-out-of-range error. That's because > get-text-property validates the position against the accessible > portion of the buffer, not against some absolute values. I didn't know that, thank you for the background information! -- Philip Kaludercic