ohmyzsh/lib/ruby_prompts.zsh

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# get the name of the rvm ruby version
function rvm_prompt_info() {
[ -f $HOME/.rvm/bin/rvm-prompt ] || return 1
local rvm_prompt
rvm_prompt=$(eval "$HOME/.rvm/bin/rvm-prompt $ZSH_THEME_RVM_PROMPT_OPTIONS" 2>/dev/null)
[[ "${rvm_prompt}x" == "x" ]] && return 1
echo "${ZSH_THEME_RVM_PROMPT_PREFIX:=(}${rvm_prompt}${ZSH_THEME_RVM_PROMPT_SUFFIX:=)}"
}
# using the rbenv plugin will override this with a real implementation
function rbenv_prompt_info() {
return 1
}
# using the chruby plugin will override this with a real implementation
function chruby_prompt_info() {
return 1
}
function ruby_prompt_info() {
echo $(rvm_prompt_info || rbenv_prompt_info || chruby_prompt_info)
}