#
# Completion enhancements
#


#
# initialization
#

# if it's a dumb terminal, return.
if [[ ${TERM} == 'dumb' ]]; then
  return 1
fi

# add the completions to the fpath
fpath=(${0:h}/external/src ${fpath})

# load and initialize the completion system
autoload -Uz compinit && compinit -C -d "${ZDOTDIR:-${HOME}}/${zcompdump_file:-.zcompdump}"


#
# zsh options
#

# If a completion is performed with the cursor within a word, and a full
# completion is inserted, the cursor is moved to the end of the word.
setopt ALWAYS_TO_END

# Perform a path search even on command names with slashes in them.
setopt PATH_DIRS

# Make globbing (filename generation) not sensitive to case.
setopt NO_CASE_GLOB

# Don't beep on an ambiguous completion.
setopt NO_LIST_BEEP


#
# completion module options
#

# group matches and describe.
zstyle ':completion:*:*:*:*:*' menu select
zstyle ':completion:*:matches' group yes
zstyle ':completion:*:options' description yes
zstyle ':completion:*:options' auto-description '%d'
zstyle ':completion:*:corrections' format '%F{green}-- %d (errors: %e) --%f'
zstyle ':completion:*:descriptions' format '%F{yellow}-- %d --%f'
zstyle ':completion:*:messages' format '%F{purple}-- %d --%f'
zstyle ':completion:*:warnings' format '%F{red}-- no matches found --%f'
zstyle ':completion:*' format '%F{yellow}-- %d --%f'
zstyle ':completion:*' group-name ''
zstyle ':completion:*' verbose yes
zstyle ':completion:*' matcher-list 'm:{a-zA-Z}={A-Za-z}' '+r:|?=**'

# directories
if (( ! ${+LS_COLORS} )); then
  # Locally use same LS_COLORS definition from utility module, in case it was not set
  local LS_COLORS='di=1;34:ln=35:so=32:pi=33:ex=31:bd=1;36:cd=1;33:su=30;41:sg=30;46:tw=30;42:ow=30;43'
fi
zstyle ':completion:*:default' list-colors ${(s.:.)LS_COLORS}
zstyle ':completion:*:*:cd:*' tag-order local-directories directory-stack path-directories
zstyle ':completion:*:*:cd:*:directory-stack' menu yes select
zstyle ':completion:*:-tilde-:*' group-order 'named-directories' 'path-directories' 'expand'
zstyle ':completion:*' squeeze-slashes true

# enable caching
zstyle ':completion::complete:*' use-cache on
zstyle ':completion::complete:*' cache-path "${ZDOTDIR:-${HOME}}/.zcompcache"

# ignore useless commands and functions
zstyle ':completion:*:functions' ignored-patterns '(_*|pre(cmd|exec)|prompt_*)'

# completion sorting
zstyle ':completion:*:*:-subscript-:*' tag-order indexes parameters

# Man
zstyle ':completion:*:manuals' separate-sections true
zstyle ':completion:*:manuals.(^1*)' insert-sections true

# history
zstyle ':completion:*:history-words' stop yes
zstyle ':completion:*:history-words' remove-all-dups yes
zstyle ':completion:*:history-words' list false
zstyle ':completion:*:history-words' menu yes

# ignore multiple entries.
zstyle ':completion:*:(rm|kill|diff):*' ignore-line other
zstyle ':completion:*:rm:*' file-patterns '*:all-files'

# If the _my_hosts function is defined, it will be called to add the ssh hosts
# completion, otherwise _ssh_hosts will fall through and read the ~/.ssh/config
zstyle -e ':completion:*:*:ssh:*:my-accounts' users-hosts \
  '[[ -f ${HOME}/.ssh/config && ${key} == hosts ]] && key=my_hosts reply=()'