dot/zshrc: Enable option to substitute `BAR=...:~FOO:...:=BAZ:...'.

[profile] / dot / zshrc

### -*-sh-*-
###
### Zsh session things.

__mdw_shell=zsh

###--------------------------------------------------------------------------
### History settings.

## Put this here so that `.shellrc-local' can override.

HISTFILE=~/.zsh-history
HISTSIZE=1000
SAVEHIST=1000

###--------------------------------------------------------------------------
### Hook implementation.

__mdw_precmd_hook= __mdw_preexec_hook=

__mdw_run_precmd_hook () { __mdw_runhook __mdw_precmd_hook; }
__mdw_run_preexec_hook () { __mdw_runhook __mdw_preexec_hook "$2"; }

precmd_functions+=(__mdw_run_precmd_hook)
preexec_functions+=(__mdw_run_preexec_hook)

###--------------------------------------------------------------------------
### Common shell configuration.

. "$HOME/.shell-rc"

## Fixup: `zsh' has sane quoting rules.
__mdw_runhook () {
  local hk=$1 saverc=$? t i; shift

  eval t=\${$hk+t}
  case $t in t) ;; *) echo >&2 "unknown hook \`$hk'"; return 2; esac

  eval t=\$$hk
  for i in ${=t}; do __mdw_setrc $saverc; "$i" "$@"; done
}

###--------------------------------------------------------------------------
### Prompt hacking.

__mdw_set_prompt_hacks () {
  case $TERM in
    linux*|screen*|xterm*|putty*|vt100*|eterm*)
      bold=%B unbold=%b
      gitcolour=%F{cyan} extracolour=%F{yellow} rccolour=%F{red} uncolour=%f
      ;;
  esac
  host=%m dir=" %(6~!%-1~/.../%4~!%~)"
  more=%F{green}%_%f
}

if [ -t 0 ]; then
  __mdw_source_if_exists /usr/lib/git-core/git-sh-prompt
  __mdw_set_prompt_pieces
fi

###--------------------------------------------------------------------------
### Line editing.

case ${INSIDE_EMACS+t},$TERM in t,dumb) unsetopt zle ;; esac
case $TERM in dumb) unset zle_bracketed_paste ;; esac

bindkey -e

for w in \
  forward-word backward-word kill-word backward-kill-word \
  transpose-words capitalize-word up-case-word down-case-word \
  delete-whole-word select-word
do
  autoload -U $w-match
  zle -N $w-bash $w-match
  zle -N $w-shell $w-match
  zstyle ':zle:*-bash' word-style standard
  zstyle ':zle:*-bash' skip-whitespace-first true
  zstyle ':zle:*-bash' word-chars ""
  zstyle ':zle:*-shell' word-style shell
  zstyle ':zle:*-shell' skip-whitespace-first false
  zstyle ':completion:*' rehash true
done

bindkey "\eb" backward-word-bash
bindkey "\e^b" backward-word-shell
bindkey "\ef" forward-word-bash
bindkey "\e^f" forward-word-shell
bindkey "\e^?" backward-kill-word-bash
bindkey "^w" backward-kill-word-shell
bindkey "\ed" kill-word-bash
bindkey "\e^d" kill-word-shell
bindkey "\et" transpose-words-bash
bindkey "\e^t" transpose-words-shell
bindkey "\eu" up-case-word-bash
bindkey "\e^u" up-case-word-shell
bindkey "\el" down-case-word-bash
bindkey "\e^l" down-case-word-shell
bindkey "\ec" capitalize-word-bash
bindkey "\e^c" capitalize-word-shell

bindkey "\e[1~" beginning-of-line "\e[4~" end-of-line

bindkey -s	      "\eOQ" "/" "\eOR" "*" "\eOS" "-"
bindkey -s "\eOw" "7" "\eOx" "8" "\eOy" "9"
bindkey -s "\eOt" "4" "\eOu" "5" "\eOv" "6" "\eOk" "+"
bindkey -s "\eOq" "1" "\eOr" "2" "\eOs" "3"
bindkey -s "\eOp" "0"		 "\eOn" "."; bindkey "\eOM" accept-line

bindkey -s	      "\eOQ" "/" "\eOR" "*" "\eOS" "-"
bindkey -s "\eOw" "7" "\eOx" "8" "\eOy" "9"
bindkey -s "\eOt" "4" "\eOu" "5" "\eOv" "6" "\eOk" "+"
bindkey -s "\eOq" "1" "\eOr" "2" "\eOs" "3"
bindkey -s "\eOp" "0"		 "\eOn" "."; bindkey "\eOM" accept-line

bindkey "\ep" history-beginning-search-backward
bindkey "\en" history-beginning-search-forward
bindkey "\e," _history-complete-older

for i in '!' '$' '@' '/' '~'; do
  bindkey "\e$i" _bash_complete-word
  bindkey "^X$i" _bash_list-choices
done

setopt interactive_comments
bindkey "\e#" pound-insert

__mdw_delete_horizontal_space () {
  LBUFFER=${LBUFFER%%[[:space:]]##}
  RBUFFER=${RBUFFER##[[:space:]]##}
}
zle -N delete-horizontal-space __mdw_delete_horizontal_space
bindkey "\e\\" delete-horizontal-space

__mdw_just_one_space () {
  LBUFFER="${LBUFFER%%[[:space:]]##} "
  RBUFFER=${RBUFFER##[[:space:]]##}
}
zle -N just-one-space __mdw_just_one_space
bindkey "\e " just-one-space

###--------------------------------------------------------------------------
### Completion.

## Contexts: :completion:FUNCTION:COMPLETER:COMMAND:ARGUMENT:TAG
zstyle ':completion:*' completer _expand _complete _ignored _approximate
zstyle ':completion:*' insert-unambiguous false
zstyle ':completion:*' list-colors ${(s.:.)LS_COLORS}
zstyle ':completion:*' list-prompt %SAt %p: Hit TAB for more, or the character to insert%s
zstyle ':completion:*' matcher-list '' '+m:{[:lower:]}={[:upper:]} r:|[._-]=** r:|=**' '+l:|=* r:|=*'
zstyle ':completion:*' max-errors 0 numeric
zstyle ':completion:*' original true
zstyle ':completion:*' verbose false
zstyle ':completion:*:*:git*:*' verbose true

## Initialize the fancy completion machinery.
autoload -Uz compinit
compinit

_r () { words[1]=sudo; _normal; }
compdef _r rootly
compdef _ssh @

###--------------------------------------------------------------------------
### Other shell tweaking.

unsetopt auto_cd
unsetopt auto_menu
setopt bang_hist
unsetopt bash_auto_list
unsetopt beep
setopt c_bases octal_zeroes
setopt extendedglob
unsetopt flow_control
unsetopt global_export
setopt glob_star_short
setopt hist_ignore_all_dups
setopt hist_ignore_space
unsetopt ksh_glob
setopt list_ambiguous
setopt list_packed
setopt multios
setopt magic_equal_subst
unsetopt nomatch
unsetopt menu_complete
setopt notify
setopt rc_expand_param
setopt rc_quotes
setopt share_history

hash -d t=$TMPDIR

###--------------------------------------------------------------------------
### Finishing touches.

## Local tweaks.
__mdw_source_if_exists "$HOME/.zshrc-local"

###----- That's all, folks --------------------------------------------------