zsh/.zshrc

if [ ! -d "$HOME/.zim" ]
then
    git clone https://github.com/zimfw/zimfw $HOME/.zim
    source ~/.zim/zimfw.zsh install
fi

# Set editor default keymap to emacs
bindkey -e
stty -ixon #disable XON/XOFF, which breaks C-s

# Prompt for spelling correction of commands.
setopt CORRECT
CORRECT_IGNORE="_*" # don't suggest completion functions

# Customize spelling correction prompt.
SPROMPT='zsh: correct %F{red}%R%f to %F{green}%r%f [nyae]? '

# Remove path separator from WORDCHARS.
WORDCHARS=${WORDCHARS//[\/]}

# Set window title format
# Escape % in commands
zstyle ':zim:termtitle' format '%~:${${1:-zsh}//\\%/%%}'
# Set window title before running a command
zstyle ':zim:termtitle' hooks 'precmd' 'preexec'

# Append `../` to your input for each `.` you type after an initial `..`
zstyle ':zim:input' double-dot-expand yes

# Set what highlighters will be used.
# See https://github.com/zsh-users/zsh-syntax-highlighting/blob/master/docs/highlighters.md
ZSH_HIGHLIGHT_HIGHLIGHTERS=(main brackets)

# Set zsh-autosuggestions highlight style
ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE="fg=black,bold,underline"

# Initialize Zim modules
if [[ ${ZIM_HOME}/init.zsh -ot ${ZDOTDIR:-${HOME}}/.zimrc ]]; then
  # Update static initialization script if it's outdated, before sourcing it
  source ${ZIM_HOME}/zimfw.zsh init -q
fi
source ${ZIM_HOME}/init.zsh

# Source aliases
source $HOME/.aliases/general

# Various Options
unsetopt NOMATCH # turn off "no matches found" on glob failure

# Remove older command from the history if a duplicate is to be added.
setopt HIST_IGNORE_ALL_DUPS
unsetopt SHARE_HISTORY # don't share history between terminals
setopt INC_APPEND_HISTORY

# rehashes on bin change, might cause performance issues
zstyle ':completion:*' rehash true

# History Substring Search bindings (PageUp and PageDown)
bindkey '^[[5~' history-substring-search-up
bindkey '^[[6~' history-substring-search-down

# fine word navigation
backward-word-fine() WORDCHARS='' zle .backward-word
forward-word-fine() WORDCHARS='' zle .forward-word
zle -N backward-word-fine
zle -N forward-word-fine
bindkey '^[F' forward-word-fine
bindkey '^[B' backward-word-fine
ZSH_AUTOSUGGEST_PARTIAL_ACCEPT_WIDGETS+=(forward-word-fine backward-word-fine)

# equivalents of eponymous Emacs functions
# from https://unix.stackexchange.com/a/595157
delete-horizontal-space() {
  emulate -L zsh
  set -o extendedglob
  LBUFFER=${LBUFFER%%[[:blank:]]##}
  RBUFFER=${RBUFFER##[[:blank:]]##}
}
zle -N delete-horizontal-space
bindkey '\e\\' delete-horizontal-space
just-one-space() {
  delete-horizontal-space
  LBUFFER="$LBUFFER "
}
zle -N just-one-space
bindkey '\e ' just-one-space

# Inserts 'sudo ' at the beginning of the line.
function prepend-sudo() {
  if [[ "$BUFFER" != su(do|)\ * ]]; then
    BUFFER="sudo $BUFFER"
    (( CURSOR += 5 ))
  fi
}
zle -N prepend-sudo
bindkey "^X^S" prepend-sudo

# Control-Backspace and Control-Delete
bindkey '^H' backward-kill-word
bindkey '5~' kill-word

# Auto start tmux if a remote connection
if [[ -z "$TMUX" && -z "$EMACS" && -z "$VIM" && -n "$SSH_TTY" ]]
then
  # Attach only to the 'auto' session
  exec tmux new-session -A -s 'auto'
fi