$1: unbound variable

[funge]

On OS X El Capitan (had same issue on Mavericks) I have the following in my .bash_profile:

source $(brew --prefix nvm)/nvm.sh

Which ends up running:

/usr/local/opt/nvm/nvm.sh

Which gives the following error:

-bash: $1: unbound variable

Which seems to come from this part:

echo $1

In this function:

nvm_supports_source_options() {
  [ "_$(echo 'echo $1' | . /dev/stdin yes 2> /dev/null)" = "_yes" ]
}

Any help or guidance on what I'm doing wrong is appreciated.

Thanks!

[ljharb]

This is because you've got the nounset bash option set. This affects nvm since it's sourced in your environment.

This is discussed in more detail in #868.

That said, I can probably fix this here by checking $# before checking $1 - I'll leave this open pending that fix.

Also, please note that installing nvm with homebrew is entirely unsupported - please brew uninstall it, and install nvm properly using the curl command in the readme.