which broken in zsh

[dhcmrlchtdj]

nvm current and nvm ls can't detect current node version i choosen.

$ nvm use unstable
Now using node v0.11.14

$ nvm ls
    v0.11.14
->    system
unstable -> 0.11 (-> v0.11.14) (default)

$ nvm current
system

$ nvm which system
node: aliased to node --harmony

i found it caused by which.

i use zsh and alias node to node --harmony.
but which in zsh can't work well with alias.

$ zsh --version
zsh 5.0.7 (x86_64-apple-darwin14.0.0)

$ which node
node: aliased to node --harmony

$ which which
which: shell built-in command

$ whence -p node
/usr/local/bin/node

can we use whence -p to instead of which in zsh?

[drkibitz]

Maybe another suggestion using same shell executable:

which -a node | grep "$NVM_DIR"

[ljharb]

@dhcmrlchtdj How did you install nvm? Which nvm --version do you have?

It seems like you might have an alias in your profile of node to node --harmony - that's likely gumming up the works?

[drkibitz]

Maybe this is better:

which -a node | grep -e "/node$" -m 1

Find first match ending in "/node", which should be the the first node executable in PATH.

[drkibitz]

@ljharb That's what it is, I have the exact same environment, in zsh the which command shows output for aliases, while it outputs nothing in sh.

[dhcmrlchtdj]

@ljharb
i source nvm manually.

$ grep 'nvm\|node' ~/.zshrc
export NVM_DIR=~/.nvm
source ~/.nvm/nvm.sh
alias node="node --harmony"

$ nvm --version
0.22.0

@drkibitz 👍

which -a node | grep -e "/node$" -m 1

work well both bash and zsh.

[ljharb]

I think you need alias node="\node --harmony" otherwise you've created a circular reference.

[dhcmrlchtdj]

will alias cause circular reference?

A Bash alias is essentially nothing more than a keyboard shortcut

and following commad maybe better

$ command which node
/usr/local/bin/node

[ljharb]

I'm not sure I understand the proposed solution but I'll be happy to evaluate a PR for it.

[ljharb]

Closed via #605.