From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Matt Wette Newsgroups: gmane.lisp.guile.devel Subject: Re: [PATCH] add language/wisp to Guile? 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[64.52.138.37]) by smtp.gmail.com with ESMTPSA id k26-20020aa7821a000000b00597caf6236esm4947649pfi.150.2023.02.18.11.56.53 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 18 Feb 2023 11:56:53 -0800 (PST) Content-Language: en-US In-Reply-To: Received-SPF: pass client-ip=2607:f8b0:4864:20::436; envelope-from=matt.wette@gmail.com; helo=mail-pf1-x436.google.com X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 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, FREEMAIL_FROM=0.001, NICE_REPLY_A=-0.256, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-devel-bounces+guile-devel=m.gmane-mx.org@gnu.org Original-Sender: guile-devel-bounces+guile-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.lisp.guile.devel:21716 Archived-At: On 2/18/23 7:58 AM, Maxime Devos wrote: > On 18-02-2023 04:50, Philip McGrath wrote: >> I haven't read the patch or this thread closely, > > I'll assume you have read it non-closely. > >> but R6RS has an answer to any concerns about compatibility with >> `#lang`. At the beginning of Chapter 4, "Lexical and Datum Syntax" >> () >> the report specifies: >> >>>   An implementation must not extend the lexical or datum syntax in >>> any way, with one exception: it need not treat the syntax >>> `#!`, for any (see section 4.2.4) that is >>> not `r6rs`, as a syntax violation, and it may use specific >>> `#!`-prefixed identifiers as flags indicating that subsequent input >>> contains extensions to the standard lexical or datum syntax. The >>> syntax `#!r6rs` may be used to signify that the input afterward is >>> written with the lexical syntax and datum syntax described by this >>> report. `#!r6rs` is otherwise treated as a comment; see section 4.2.3. > > That is for '#!lang', not '#lang'.  R6RS allows the former, but the > patch does the latter.  As such, R6RS does not have an answer about > incompatibility with `#lang', unless you count ‘it's incompatible’ as > an answer. I just looked on the web and it appears that #! as first line is a comment in JavaScript also. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar#hashbang_comments