rustup doc does not use the default browser

[SteveLauC]

Problem

My default browser is chrome, and when I open a doc with rustup doc, it launches firefox.

Some extra environment information

$ neofetch | grep -i de
                                          DE: GNOME 42.2

$ xdg-settings get default-web-browser
google-chrome.desktop

$ xdg-mime query default text/html
google-chrome.desktop

$ echo $BROWSER # $BROWSER is not set


$ xdg-open --version
xdg-open 1.1.3

Steps

1. open doc with rustup doc --xx

Possible Solution(s)

This seems to be a bug of xdg-open

$ xdg-mime query default text/html
google-chrome.desktop

As you can see, the default app for HTML file is chrome(my default browser), but it still use firefox to open my file.

$ xdg-open file:///home/steve/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/share/doc/rust/html/std/index.html
# firefox is launched

Notes

A similar issue(#2008) has been filed before, but seems the cause of that issue is the outdated version of opener. And I checked that rustup is using the latest version of opener now, which is 0.5.0.

Rustup version

rustup 1.25.1 (bb60b1e89 2022-07-12)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active `rustc` version is `rustc 1.62.1 (e092d0b6b 2022-07-16)`

Installed toolchains

Default host: x86_64-unknown-linux-gnu
rustup home:  /home/steve/.rustup

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-x86_64-unknown-linux-gnu

active toolchain
----------------

stable-x86_64-unknown-linux-gnu (default)
rustc 1.62.1 (e092d0b6b 2022-07-16)