From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: "Trent W. Buck" Newsgroups: gmane.emacs.bugs Subject: bug#65009: 29.1; should emacsclient check BROADWAY_DISPLAY as well as WAYLAND_DISPLAY and DISPLAY? 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[2403:5804:c6::12e]) by smtp.gmail.com with ESMTPSA id z10-20020aa791ca000000b006877b0b31c2sm603974pfa.147.2023.08.02.02.52.00 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Aug 2023 02:52:01 -0700 (PDT) Received-SPF: pass client-ip=2607:f8b0:4864:20::42a; envelope-from=trentbuck@gmail.com; helo=mail-pf1-x42a.google.com X-Spam_score_int: -8 X-Spam_score: -0.9 X-Spam_bar: / X-Spam_report: (-0.9 / 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, NUMERIC_HTTP_ADDR=1.242, 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-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:266487 Archived-At: I'm writing this from Emacs 28.2 still, but this is about pgtk 29.1. I haven't actually tested pgtk myself yet (sorry!) The good folks of #debian-emacs noticed that while emacsclient doesn't link to any GUI libraries, it does check GUI environment variables. https://sources.debian.org/src/emacs/1:29.1+1-2/lib-src/emacsclient.c/?hl=1703#L631-L636 631 #ifdef HAVE_PGTK 632 display = egetenv ("WAYLAND_DISPLAY"); 633 alt_display = egetenv ("DISPLAY"); 634 #else 635 display = egetenv ("DISPLAY"); 636 #endif This (maybe) causes weirdness when Debian builds several versions of /bin/emacs, but a single shared version of /bin/emacsclient. But THIS bug is about what happens if you're running emacs inside the browser, using GTK's built-in HTML5 backend: # Start the display (a.k.a. web server) broadwayd :0 & # Connect from a client (could be a different container) firefox http://127.0.0.1:8080 # start some GUI apps GDK_BACKEND=broadway BROADWAY_DISPLAY=:0 gtk3-demo & GDK_BACKEND=broadway BROADWAY_DISPLAY=:0 gnome-terminal -- emacs -nw & GDK_BACKEND=broadway BROADWAY_DISPLAY=:0 virt-manager & GDK_BACKEND=broadway BROADWAY_DISPLAY=:0 emacs & AIUI pGTK makes Emacs a fully native GTK app and this Just Works. But "emacsclient --create-frame" won't work until/unless it checks $BROADWAY_DISPLAY, right? And while emacs daemon can tell from just "-display ${WAYLAND_DISPLAY:-$DISPLAY}" when wayland is wanted (because WAYLAND_DISPLAY starts with "wayland-"), that's *not* possible with broadway. So some kind of additional logic is needed on the server side, too? Or maybe -display :0 will Just Work as long as emacs --daemon also has GDK_BACKEND=broadway? I don't fully understand what happens inside the GTK layer. My main use case for this is to have a GUI when running Emacs in Debian GNU/ntoskrnl (a.k.a. WSL1). That way I have full, completely normal GNU userland (unlike NTEmacs), but Indic scripts render properly (unlike Debian GNU emacs -nw inside Microsoft Terminal). (The normal ways to solve this are WSL2 or MSYS2, but I like being weird.) If the general consensus is "too hard; WONTFIX", I am OK with that. This is something I want a couple of times a year, not every single day.