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Date: Mon, 29 May 2023 08:40:32 +0000 Message-ID: Subject: Re: Meaning of symbol prefixed with "#$" To: Ricardo Wurmus Cc: help-guix@gnu.org Received-SPF: pass client-ip=2607:f8b0:4864:20::82b; envelope-from=ningyuan.sg@gmail.com; helo=mail-qt1-x82b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Mon, 29 May 2023 11:21:09 -0400 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: help-guix@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-guix-bounces+larch=yhetil.org@gnu.org Sender: help-guix-bounces+larch=yhetil.org@gnu.org X-Migadu-Flow: FLOW_IN X-Migadu-Country: US ARC-Seal: i=1; s=key1; d=yhetil.org; t=1685374787; a=rsa-sha256; cv=none; b=r45WlE8HuS+lGHrwSfKv0DFavmql+pCENXi+LYDqsAHJll8PTFUFHx7ZYZn5ePAgR5btbT Q0j3o2DF8N+cl+d8M85/4AIYhXXwrOApQwc+ruc5QhJ0YOib957qRw9R/dgXq/SyvvZsIs BJ4OvVl2nWtnDPgDoMKtlnuZ7cEGEDTW/ZvTk0MsSNdwzYGvcpZd/qszq9QPXHjmBN72Ss qCCdPAY2ZYppKTF78RL0hMu8/1+ihERacaKoLoo1Uh6Tu/3RAZV5LEkn8P17yQakVWWGKQ CYX0mk0HdYiH2EpQcqJmctHUs7kPD8fBx9AyYygJ8NqCedxK8jTwXVRx3Cq7vg== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=fail ("body hash did not verify") header.d=gmail.com header.s=20221208 header.b=i1j1cL50; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of "help-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="help-guix-bounces+larch=yhetil.org@gnu.org" ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1685374787; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post:dkim-signature; bh=IGFSnfyY0mrHlFwsxdtPu8nv+kPdKQ3P8DO5JIngTlk=; b=X25jVQGvgtRvppqLQfvOciOwZNoXfpgtwZQ/mtiiGBbG6zRzo+wESGuHwpTxlbDILy+te4 EalYN0aMOBSRNtHcffa9tlgBHVItzYBzN1et5NFTOTLaCSpHQPvsZNR2JiWnc2ndv5gP6I FGgvleZkA5JoKce5mAHbg7I6HHPslyvXkWNSQR+hesyu7DlZ7jLgRdYOUYrIScTZ1FeceF KuRAfSxBPWFntIqiipVIlANY9MmmgAyXPGgop4NIm8Brz0o8utnfgiB/ent+0gBb9VA+aT mmd7drZv3A5WgdCme3vJBc4Phvcp7O3FpGEpP3Lo3utB/eHR9d7GiuoPony/qQ== X-Migadu-Scanner: scn1.migadu.com Authentication-Results: aspmx1.migadu.com; dkim=fail ("body hash did not verify") header.d=gmail.com header.s=20221208 header.b=i1j1cL50; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of "help-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="help-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: 7.06 X-Spam-Score: 7.06 X-Migadu-Queue-Id: 7496532AA2 X-TUID: zN8uT7tIJIFM Thanks so much, I'll read up! On Sun, May 28, 2023 at 7:31=E2=80=AFAM Ricardo Wurmus = wrote: > > Hi, > > > Thanks so much for your suggestion! Can I ask for a name for these > > notations, #~ and #$? I would like to learn more about them, but they > > are difficult to Google for. > > These are syntax for =E2=80=9Cgexp=E2=80=9D and =E2=80=9Cungexp=E2=80=9D.= The Guix manual explains them > in great detail in the section 9.12 G-Expressions. > > If you need more detail you can find it here: > https://inria.hal.science/hal-01580582/en > > -- > Ricardo >