In POSIX sh, 'local' is undefined. [SC2039]

[croaky]

@thoughtbot/shell We use local quite a few times in the script but ShellCheck doesn't like it. Thoughts on how to approach it?

[mike-burns]

The best I got is this: https://stackoverflow.com/questions/18597697/posix-compliant-way-to-scope-variables-to-a-function-in-a-shell-script#answer-18600920

Which points out that local is understood by most OSes.

[croaky]

Cool, thanks. Going to add this config to my vimrc:

let g:syntastic_sh_shellcheck_args="-e SC2039"