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#62889: 29.0.60; (setopt ...) does not give "assignment to free variable" warning Date: Tue, 18 Apr 2023 19:20:41 +0000 Message-ID: <87cz4180ae.fsf@posteo.net> References: <2678912.mvXUDI8C0e@192.168.1.69> <87pm813e7k.fsf@posteo.net> <1849432.tdWV9SEqCh@192.168.1.69> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28783"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 62889-done@debbugs.gnu.org To: ar0x2ff@gmail.com Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Tue Apr 18 21:21:33 2023 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 1poqtP-0007J0-Ty for geb-bug-gnu-emacs@m.gmane-mx.org; 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Tue, 18 Apr 2023 21:20:10 +0200 (CEST) In-Reply-To: <1849432.tdWV9SEqCh@192.168.1.69> (ar0x2ff@gmail.com's message of "Tue, 18 Apr 2023 10:34:27 +0200") Autocrypt: addr=philipk@posteo.net; keydata= mDMEZBBQQhYJKwYBBAHaRw8BAQdAHJuofBrfqFh12uQu0Yi7mrl525F28eTmwUDflFNmdui0QlBo aWxpcCBLYWx1ZGVyY2ljIChnZW5lcmF0ZWQgYnkgYXV0b2NyeXB0LmVsKSA8cGhpbGlwa0Bwb3N0 ZW8ubmV0PoiWBBMWCAA+FiEEDg7HY17ghYlni8XN8xYDWXahwukFAmQQUEICGwMFCQHhM4AFCwkI BwIGFQoJCAsCBBYCAwECHgECF4AACgkQ8xYDWXahwulikAEA77hloUiSrXgFkUVJhlKBpLCHUjA0 mWZ9j9w5d08+jVwBAK6c4iGP7j+/PhbkxaEKa4V3MzIl7zJkcNNjHCXmvFcEuDgEZBBQQhIKKwYB BAGXVQEFAQEHQI5NLiLRjZy3OfSt1dhCmFyn+fN/QKELUYQetiaoe+MMAwEIB4h+BBgWCAAmFiEE Dg7HY17ghYlni8XN8xYDWXahwukFAmQQUEICGwwFCQHhM4AACgkQ8xYDWXahwukm+wEA8cml4JpK NeAu65rg+auKrPOP6TP/4YWRCTIvuYDm0joBALw98AMz7/qMHvSCeU/hw9PL6u6R2EScxtpKnWof z4oM 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:260235 Archived-At: ar0x2ff@gmail.com writes: > Philip Kaludercic writes: >> var2 should also not be highlighted, since the first argument to the >> function `customize-set-variable' is a symbol, and the byte compiler >> correctly states that it doesn't know that any variable "var2" will be >> defined. >> >> If you macroexpand setopt, you will see that it generates >> >> (setopt--set 'var3 2) >> >> which is all fine, since no functions are being invoked with undefined >> variables. >> >> The reason this makes sense is that not all user options have to be >> loaded when they are set. A number of them are even auto-loaded and >> will load the library for the necessary user-option setters if >> necessary. > > I was aware of the "do not overwrite custom variable if set before library > load" mechanism, but I also seem to remember the (customize-set-variable ...) > function to throw "free variable" warnings (e.g. when i open custome.el), so i > kind of took for granted that it was correct behaviour. > > Glad to know (setopt ...) works this way! No more warning suppress in my init > file :) Great, then I will close the report.