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[207.236.123.209]) by smtp.gmail.com with ESMTPSA id h65sm3792151qkd.95.2020.11.07.21.49.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Nov 2020 21:49:33 -0800 (PST) From: Maxim Cournoyer References: <87blhtt6d6.fsf@gmail.com> <875z7zf3hb.fsf@gnu.org> <87zh53knrh.fsf@gmail.com> <87lffjlv0t.fsf@gnu.org> Date: Sun, 08 Nov 2020 00:49:32 -0500 In-Reply-To: <87lffjlv0t.fsf@gnu.org> ("Ludovic =?UTF-8?Q?Court=C3=A8s?="'s message of "Mon, 02 Nov 2020 14:59:14 +0100") Message-ID: <87h7q0iej7.fsf@gmail.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-Spam-Score: -1.0 (-) X-BeenThere: guix-patches@gnu.org List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-patches-bounces+larch=yhetil.org@gnu.org Sender: "Guix-patches" X-Scanner: ns3122888.ip-94-23-21.eu Authentication-Results: aspmx1.migadu.com; dkim=fail (headers rsa verify failed) header.d=gmail.com header.s=20161025 header.b=Ghz9ySX+; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of guix-patches-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-patches-bounces@gnu.org X-Spam-Score: 0.09 X-TUID: 0D96WackpCS4 Hi Ludovic, Ludovic Court=C3=A8s writes: > Hi Maxim, > > Apologies for not following up earlier on this one=E2=80=A6 No worries! > Maxim Cournoyer skribis: > >> Ludovic Court=C3=A8s writes: >> >>> Hi, >>> >>> Maxim Cournoyer skribis: >>> >>>> These three commits extend our search-path-specification record with a >>>> new field, that can be used to produce a trailing separator, which can >>>> be useful at least with Emacs (I can think of at least another place >>>> where it could be used: the INFOPATH variable). >>>> >>>> It was motivated to allow defining the Emacs search path in a more >>>> robust way. >>> >>> I=E2=80=99m skeptical since we have only one (or two?) use cases. I th= ink we >>> should weigh the added complexity, both in terms of implementation and >>> of semantic clarity, compared to reduced complexity elsewhere. It seems >>> to me that the costs outweigh the benefits here. >> >> I too was skeptical at first (which explains why this commit was not >> submitted for inclusion for 3 years :-)), but recent events surrounding >> emacs-next and the bump to Emacs 27 have put its value back into light. > > Do you know if there are other use cases than Emacs for this? The three environment variables that I know that make use of it in this way are EMACSLOADPATH, INFOPATH and MANPATH. There may be others, but it's hard to search for that. > I vaguely remember that =E2=80=98EMACSLOADPATH=E2=80=99 unusual handling = of the empty > entry is why we didn=E2=80=99t have it in =E2=80=98native-search-paths=E2= =80=99 initially, and > why Alex Kost had come up with a different mechanism instead. I'm not sure what this was about, but if there was an issue with using EMACSLOADPATH, I think we would have found out by now :-). Thanks, Maxim