Silently fails with n auto when curl and wget aren't installed

[Strum355]

Bug Report

Summary

When running n auto without curl or wget installed, the command exits 1 silently without an error:

root@e5c39cb1f5fa:/workspace# n auto
       found : /workspace/.nvmrc
        read : 14.15.4
  installing : node-v14.15.4
root@e5c39cb1f5fa:/workspace# echo $?
1

Steps to Reproduce

Dockerfile as such:

FROM node:15.6.0-buster-slim

RUN npm install -g n

And run n auto in a repo with a file such as .nvmrc

Expected Behaviour

Some indication as to what the error is, such as when I run n latest I get:

root@e5c39cb1f5fa:/workspace# n latest

  Error: curl or wget command required


  Error: failed to download version index (https://nodejs.org/dist/index.tab)

Actual Behaviour

Silent exits with code 1

Configuration Details

$ n --version
7.0.0

$ command -v node
/usr/local/bin/node

$ node -p process.platform
linux

[shadowspawn]

Reproduced. This happens in general when the version does not need a lookup, like n 10.2.3.

[shadowspawn]

I think with current usage, this line should not be redirecting stderr:

n/bin/n

Line 853 in 9dad9db

do_get --spider "$1" &> /dev/null || return 1

[shadowspawn]

Improved behaviour released in version 7.0.1.