> On 20 Jun 2024, at 20:52, debian-u...@howorth.org.uk wrote: > Greg Wooledge <g...@wooledge.org> wrote: >> On Thu, Jun 20, 2024 at 22:56:33 +0530, Pranjal Singh wrote: >>> It runs regular Firefox after adding the -private-window flag. >>> >>> To get a MWE, I made these changes later: >>> - Exec=firefox -private-window %u >>> - StartupWMClass=firefox >>> +Exec=gnome-calculator >> >> Did you see Gareth's reply at >> <https://lists.debian.org/debian-user/2024/06/msg00432.html>? >> >> It's supposed to be --private-window with two leading hyphens, not >> one, he said. > > He was wrong according to Mozilla's documentation
My advice was based on $ firefox -h | grep private --private-window <url> Open <url> in a new private window. $ I did try (with Mate Desktop) with both single and double hyphens, both on the command line and in /usr/share/applications/firefox-esr.desktop One hyphen failed to have the desired effect, but works when I try it now. Firefox hasn't been updated here since, so there seem to be other variables involved. I would be inclined to take it from the firefox help grep results above that the double-hyphen form should always work. I think the wiki is out of date - cf. "-private Opens Firefox in permanent private browsing mode ... -private-window Opens a new private browsing window in an existing instance of Firefox ..." https://wiki.mozilla.org/Firefox/CommandLineOptions#Command_line_options There is no "[-]-private" option according to the grep I performed, and [-]-private produces a non-private window when run here from the command line. $ apt policy firefox-esr firefox-esr: Installed: 115.12.0esr-1~deb12u1 Candidate: 115.12.0esr-1~deb12u1 Version table: *** 115.12.0esr-1~deb12u1 500 500 https://security.debian.org/debian-security bookworm-security/main amd64 Packages [...]