Control: merge 948691 980461 Control: forwarded -1 https://bugzilla.mozilla.org/show_bug.cgi?id=1494436
On Sat, 27 Nov 2021 at 07:13:20 +0000, Jonathan Krebs wrote: > Could you please explain, why Thunderbird should not set > [MOZ_APP_LAUNCHER]? Let me turn this round: why *should* Thunderbird set this environment variable? What benefit does it give Thunderbird to make any child process that happens to be Mozilla-based (even Firefox!) think it is part of Thunderbird? Firefox doesn't seem to need to do similarly; what's different in Thunderbird that makes this necessary? On Sat, 27 Nov 2021 at 08:46:16 +0100, Carsten Schoenert wrote: > But yeah, I have the same question, so Mike please, it would be nice to hear > some thoughts from you why setting MOZ_APP_LAUNCHER isn't something we > should do and what other options we have. I'm not Mike, but the obvious reason to not set MOZ_APP_LAUNCHER is: because it breaks Firefox when used as a URL handler by Thunderbird, by making Firefox think it's part of Thunderbird. https://bugs.debian.org/980461 seems to be basically the same bug, and points to upstream bug report https://bugzilla.mozilla.org/show_bug.cgi?id=1494436 where the other suggestion was to remove MOZ_APP_LAUNCHER from the environment before launching any external URL or MIME-type handler. I'll try to put together a patch for that. smcv
