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9bbd493231
When trying to query the user directly via /dev/tty, both WSL's bash and BusyBox' bash emulation seem to have problems printing the value that they just read. The bash just stops in those instances, does not even execute any commands after the echo command. Let's just work around this by running the Bash snippet only in MSYS2's Bash: its `SHELL` variable has the `.exe` suffix, and neither WSL's nor BusyBox' bash set the `SHELL` variable to a path with that suffix. In the latter case, we simply exit with code 127 (indicating that the command was not found) and fall back to the CONIN$/CONOUT$ method quietly. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>