zsh errors in dotfiles - zsh

Question

I am trying to set up a new work environment, using zsh and an old set of dotfiles. I have this error with git information and I do not know how to solve it. Here is the error from iTerm2 as soon as I cd into my dotfiles repo:
~ ✔ cd dotfiles
_git_prompt_color:3: = not found
dotfiles ✔ _git_prompt_color:3: = not found
I am assuming the issue surrounds line 3 of the _git_prompt_color method?
Here is the file where I think the issue is:
_git_prompt_info() {
ref=$(git symbolic-ref HEAD 2> /dev/null)
if [ -n $ref ]; then
branch_name="${ref#refs/heads/}"
branch_name_max_length=$(($COLUMNS/5))
if [ ${#branch_name} -gt $branch_name_max_length ]; then
echo "$branch_name[0,$(($branch_name_max_length-3))]..."
else
echo $branch_name
fi
fi
}
_git_status() {
git_status=$(cat "/tmp/git-status-$$")
if [ -n "$(echo $git_status | grep "Changes not staged")" ]; then
echo "changed"
elif [ -n "$(echo $git_status | grep "Changes to be committed")" ]; then
echo "pending"
elif [ -n "$(echo $git_status | grep "Untracked files")" ]; then
echo "untracked"
else
echo "unchanged"
fi
}
_git_prompt_color() {
if [ -n "$1" ]; then
current_git_status=$(_git_status)
if [ "changed" == $current_git_status ]; then
echo "$(_red $1)"
elif [ "pending" == $current_git_status ]; then
echo "$(_yellow $1)"
elif [ "unchanged" == $current_git_status ]; then
echo "$(_green $1)"
elif [ "untracked" == $current_git_status ]; then
echo "$(_cyan $1)"
fi
else
echo "$1"
fi
}
_color() {
if [ -n "$1" ]; then
echo "%{$fg_bold[$2]%}$1%{$reset_color%}"
fi
}
_separate() { if [ -n "$1" ]; then echo " $1"; fi }
_grey() { echo "$(_color "$1" grey)" }
_yellow() { echo "$(_color "$1" yellow)" }
_green() { echo "$(_color "$1" green)" }
_red() { echo "$(_color "$1" red)" }
_cyan() { echo "$(_color "$1" cyan)" }
_blue() { echo "$(_color "$1" blue)" }
_full_path() { echo "$(_blue "%~")" }
_working_directory() { echo "$(_blue "%c")" }
_colored_git_branch() { echo "$(_git_prompt_color "$(_git_prompt_info)")" }
_display_current_vim_mode() {
if [[ $VIMODE == 'vicmd' ]]; then
echo "$(_red "✘")"
else
echo "$(_green "✔")"
fi
}
function zle-line-init zle-keymap-select {
VIMODE=$KEYMAP
zle reset-prompt
}
zle -N zle-line-init
zle -N zle-keymap-select
function precmd {
$(git status 2> /dev/null >! "/tmp/git-status-$$")
}
PROMPT='$(_working_directory)$(_separate $(_colored_git_branch)) $(_display_current_vim_mode) '
Any help on this issue would be much appreciated!

Answer 1

[ do not support the == operator. You've to either use = or perform the comparison using [[ operator. [ offers only limited functionality but it's POSIX compliant, While [[ isn't.
Here it would be
if [[ "changed" == $current_git_status ]]
or
if [ "changed" = $current_git_status ]
Difference between test, [ and [[
Tip :
Try using vcs_info to obtain basic version control information.
vcs_info documentation
vcs_info examples