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Mon, 22 Feb 2021 05:27:52 +0000 Thread-Topic: [External] : Re: Current mode command discovery Thread-Index: AQHXCM86Acw3exOIcUaxCYWW4/uIwapjopxA In-Reply-To: <87y2fg7nvy.fsf@gnus.org> Accept-Language: en-US Content-Language: en-US authentication-results: gnus.org; dkim=none (message not signed) header.d=none;gnus.org; dmarc=none action=none header.from=oracle.com; x-originating-ip: [73.170.83.28] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: be38a115-7098-4d18-608d-08d8d6f299be x-ms-traffictypediagnostic: SA2PR10MB4763: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255; 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envelope-from=drew.adams@oracle.com; helo=userp2130.oracle.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:265460 Archived-At: > * The :enable thing in menu items Don't forget :filter (which can also apply to commands bound to keyboard ke= ys). > All of these are ways to say that the command exists, but can't be > executed right now. We could introduce one new mechanism that replaces > all this spread-out information in one place, where it belongs: >=20 > (defun kill-region (...) > (declare (inhibited (lambda () > (and (not (region-active-p)) > "The region is not active"))))...) > Or something along those lines. Again, a lispy way to attach such info (and not just info saying why a comm= and can't be invoked right ow) to a named function is to just use symbol pr= operties. Why do you insist on modifying source code this way? It's not like these are declarations for the byte-compiler. There's no nee= d to hard-code this info in the source code. Or even if you insist on doing it there, just use `put'. That lets anyone = do it anywhere: users, anyone, anytime.