This zsh theme is based on Ryan Sobol's fish shell theme.

Notes

To make this work like Ryan's original fish shell, install the following ZSH plugins and use the sobol.zsh-theme.

https://github.com/zsh-users/zsh-autosuggestions
https://github.com/zsh-users/zsh-syntax-highlighting

Add this command to your zshrc file. 

alias gbra="git branch | grep -v "master" | grep -v "main" | xargs git branch -D"

sobol.zsh-theme

# Sobol ZSH Theme

# settings
typeset +H _current_dir="%{$fg_bold[blue]%}%3~%{$reset_color%} "
typeset +H _return_status="%{$fg_bold[red]%}%(?..⍉)%{$reset_color%}"
typeset +H _hist_no="%{$fg[grey]%}%h%{$reset_color%}"

PROMPT='
%{%(?.$fg[blue].$fg[red])%}$(_fishy_collapsed_wd) $(git_prompt_info) $(ruby_prompt_info)%{%(!.${fg[red]}.${fg[white]})%}%{$reset_color%}'

PROMPT2='%{%(!.${fg[red]}.${fg[white]})%}◀%{$reset_color%}'

function _fishy_collapsed_wd() {
  echo $(pwd | perl -pe '
   BEGIN {
      binmode STDIN,  ":encoding(UTF-8)";
      binmode STDOUT, ":encoding(UTF-8)";
   }; s|^$ENV{HOME}|~|g; s|/([^/.])[^/]*(?=/)|/$1|g; s|/\.([^/])[^/]*(?=/)|/.$1|g
')
}

MODE_INDICATOR="%{$fg_bold[yellow]%}❮%{$reset_color%}%{$fg[yellow]%}❮❮%{$reset_color%}"

# Git prompt settings
ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg[yellow]%}"
ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_DIRTY=" %{$fg[red]%}✖%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_CLEAN=" %{$fg[green]%}✔%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_ADDED="%{$fg[green]%}✚ "
ZSH_THEME_GIT_PROMPT_MODIFIED="%{$fg[yellow]%}⚑ "
ZSH_THEME_GIT_PROMPT_DELETED="%{$fg[red]%}✖ "
ZSH_THEME_GIT_PROMPT_RENAMED="%{$fg[blue]%}▴ "
ZSH_THEME_GIT_PROMPT_UNMERGED="%{$fg[cyan]%}§ "
ZSH_THEME_GIT_PROMPT_UNTRACKED="%{$fg[white]%}◒ "

# Ruby prompt settings
ZSH_THEME_RUBY_PROMPT_PREFIX="%{$fg[grey]%}"
ZSH_THEME_RUBY_PROMPT_SUFFIX="%{$reset_color%}"

# LS colors, made with https://geoff.greer.fm/lscolors/
export LSCOLORS="exfxcxdxbxegedabagacad"
export LS_COLORS='di=34;40:ln=35;40:so=32;40:pi=33;40:ex=31;40:bd=34;46:cd=34;43:su=0;41:sg=0;46:tw=0;42:ow=0;43:'
export GREP_COLOR='1;33'