Add glob completion & enhance fzf integration

Address issue #51.

README.md

@@ -43,7 +43,7 @@ When you source
 | --- | --- |
 | [<kbd>↓</kbd>](# "down") | Select a completion or (in multi-line buffer) move cursor down |
 | [<kbd>↑</kbd>](# "up") | Do fuzzy history search or (in multi-line buffer) move cursor up |
-| [<kbd>⌃␣</kbd>](# "ctrl-space") | Change directory (in empty buffer), expand alias, insert longest common prefix (on glob expression) or do fuzzy file search |
+| [<kbd>⌃␣</kbd>](# "ctrl-space") | Change directory (in empty buffer), correct spelling, expand alias, insert longest common prefix (on glob expressions) or do fuzzy file search |
 | [<kbd>⌥↓</kbd>](# "alt-down") | Enter completion menu (also in multi-line buffer) |
 | [<kbd>⌥↑</kbd>](# "alt-up") | Do fuzzy history search (also in multi-line buffer) |
 
@@ -177,6 +177,11 @@ zstyle ':autocomplete:tab:*' completion insert
 **Note:** This last option also changes the listings slightly to not do completion to the left of
 what you've typed (unless that would result in zero matches).
 
+To have [<kbd>⇥</kbd>](# "tab") use [`fzf`'s completion feature](#requirements):
+```shell
+zstyle ':autocomplete:tab:*' completion fzf
+```
+
 
 ### Customize autocompletion messages
 You can customize the various messages that the autocompletion feature shows.

zsh-autocomplete.zsh

@@ -26,8 +26,8 @@
   [[ ! -v ZLE_REMOVE_SUFFIX_CHARS ]] && export ZLE_REMOVE_SUFFIX_CHARS=$' \t\n;&'
 
   [[ ! -v _autocomplete__options ]] && export _autocomplete__options=(
-    ALWAYS_TO_END COMPLETE_ALIASES GLOB_COMPLETE GLOB_DOTS LIST_PACKED
-    no_CASE_GLOB no_COMPLETE_IN_WORD no_LIST_BEEP
+    ALWAYS_TO_END COMPLETE_ALIASES GLOB_DOTS GLOB_STAR_SHORT LIST_PACKED
+    no_CASE_GLOB no_COMPLETE_IN_WORD no_GLOB_COMPLETE no_LIST_BEEP
   )
 
   # Workaround for issue #43
@@ -95,11 +95,11 @@ _autocomplete.main.hook() {
     fi'
   zstyle ':completion:*:(-command-|cd|z):*' tag-order '! users' '-'
 
-  zstyle ':completion:*:expand:*' tag-order '! all-expansions original'
-
   zstyle -e ':completion:*' max-errors '
     reply=( $(( min(7, (${#PREFIX} + ${#SUFFIX}) / 2 - 1) )) numeric )'
 
+  zstyle -e ':completion:*' glob '
+    [[ $PREFIX$SUFFIX == *[\*\(\|\<\[\?\^\#]* ]] && reply=( "true" ) || reply=( "false" )'
   zstyle ':completion:*' expand prefix suffix
   zstyle ':completion:*' list-suffixes true
   zstyle ':completion:*' path-completion true
@@ -113,8 +113,6 @@ _autocomplete.main.hook() {
     zstyle ':completion:*' group-name ''
   fi
 
-  zstyle ':completion:*:expansions' format '%F{yellow}%d:%f'
-  zstyle ':completion:*:expansions' group-name ''
   zstyle ':completion:*:messages' format '%F{blue}%d%f'
   zstyle ':completion:*:warnings' format '%F{red}%d%f'
   zstyle ':completion:*' auto-description '%F{yellow}%d%f'
@@ -131,10 +129,9 @@ _autocomplete.main.hook() {
   zstyle ':completion:correct-word:*' add-space false
   zstyle ':completion:correct-word:*' glob false
 
-  zstyle ':completion:list-choices:*' glob false
   zstyle ':completion:list-choices:*' menu ''
 
-  zstyle ':completion:expand-word:*' completer _expand_alias _expand
+  zstyle ':completion:expand-word:*' glob true
 
   zstyle ':completion:list-expand:*' completer _expand _complete _ignored _approximate
   zstyle ':completion:list-expand:complete:*' matcher-list \
@@ -147,8 +144,6 @@ _autocomplete.main.hook() {
     reply=( "${(b)prefix}${punct}[[:punct:]]*" )'
   zstyle ':completion:list-expand:complete:*:path-directories' ignored-patterns '/'
   zstyle ':completion:list-expand:*' tag-order '*'
-  zstyle ':completion:list-expand:*' list-suffixes true
-  zstyle ':completion:list-expand:*' path-completion true
   zstyle ':completion:list-expand:*' format '%F{yellow}%d:%f'
   zstyle ':completion:list-expand:*' group-name ''
   zstyle ':completion:list-expand:*' extra-verbose true
@@ -281,6 +276,12 @@ _autocomplete.main.hook() {
       else
         bindkey $key[Tab] complete-word
       fi
+      ;;
+    'fzf')
+      export fzf_default_completion='complete-word'
+      ;;
+  esac
+  if [[ $tab_completion == (accept|fzf) ]]; then
       zle -C complete-word complete-word _autocomplete.complete-word.completion-widget
 
       bindkey $key[BackTab] list-expand
@@ -297,8 +298,7 @@ _autocomplete.main.hook() {
         bindkey -M menuselect -s $key[BackTab] $key[DeleteList]$key[Undo]$key[BackTab]
         bindkey -M menuselect -s $key[Undo] $key[DeleteList]$key[Undo]
       fi
-      ;;
-  esac
+  fi
 
   [[ -v ZSH_AUTOSUGGEST_IGNORE_WIDGETS ]] && ZSH_AUTOSUGGEST_IGNORE_WIDGETS+=(
     prompt_\*
@@ -678,7 +678,6 @@ _autocomplete.warning() {
 
 _autocomplete.correct-word.completion-widget() {
   setopt localoptions noshortloops warncreateglobal extendedglob $_autocomplete__options
-  unsetopt GLOB_COMPLETE
 
   if [[ ${LBUFFER[-1]} != [[:IDENT:]] || ${RBUFFER[1]} != [[:IFS:]]# ]]; then
     return 1
@@ -721,9 +720,7 @@ _autocomplete.complete-word.completion-widget() {
   if [[ -v compstate[old_list] ]]; then
     compstate[old_list]='keep'
     compstate[insert]='1'
-    if [[ ${compstate[context]} == (command|redirect) ]]; then
-      compstate[insert]+=' '
-    fi
+    [[ ${compstate[context]} == (command|redirect) ]] && compstate[insert]+=' '
     _autocomplete._main_complete complete-word _oldlist
   else
     _autocomplete._main_complete complete-word
@@ -774,7 +771,7 @@ _autocomplete.history-search.zle-widget() {
 
   local FZF_COMPLETION_TRIGGER=''
   local fzf_default_completion='list-expand'
-  local FZF_DEFAULT_OPTS="$FZF_DEFAULT_OPTS --bind=ctrl-space:abort,ctrl-k:kill-line"
+  local FZF_DEFAULT_OPTS="$FZF_DEFAULT_OPTS --ansi --bind=ctrl-space:abort,ctrl-k:kill-line"
 
   zle fzf-history-widget
 }
@@ -784,7 +781,7 @@ _autocomplete.expand-or-complete.zle-widget() {
 
   local FZF_COMPLETION_TRIGGER=''
   local fzf_default_completion='list-expand'
-  local FZF_DEFAULT_OPTS="$FZF_DEFAULT_OPTS --bind=ctrl-space:abort,ctrl-k:kill-line"
+  local FZF_DEFAULT_OPTS="$FZF_DEFAULT_OPTS --ansi --bind=ctrl-space:abort,ctrl-k:kill-line"
 
   local curcontext
   _autocomplete.curcontext expand-or-complete
@@ -797,10 +794,18 @@ _autocomplete.expand-or-complete.zle-widget() {
   if [[ ${LBUFFER[-1]} != [[:IFS:]]# || ${RBUFFER[1]} != [[:IFS:]]# ]]; then
     zle .select-in-shell-word
     local lbuffer=$LBUFFER
-    if ! zle expand-word && [[ $lbuffer != $LBUFFER ]]; then
+    zle expand-word
+    if [[ $lbuffer != $LBUFFER ]]; then
       zle .auto-suffix-remove
+      return 0
     fi
-    return 0
+    local lword=${${(Az)LBUFFER}[-1]}
+    local rword=${${(Az)RBUFFER}[1]}
+    local word=$lword$rword
+    word=${${word/[\^\(\<\[\*\?]*[\*\?\)\>\]\#]}//[\^\*\?\|\#]}
+    LBUFFER=${LBUFFER%$lword}$word
+    RBUFFER=${RBUFFER#$rword}
+    zle -R
   fi
 
   zle fzf-completion
@@ -810,9 +815,15 @@ _autocomplete.expand-word.completion-widget() {
   setopt localoptions noshortloops warncreateglobal extendedglob $_autocomplete__options
 
   local curcontext
-  _autocomplete._main_complete expand-word
-  (( compstate[nmatches] == 1)) && compstate[insert]='1'
-  (( compstate[nmatches] > 0))
+  if [[ ${_lastcomp[completer]} == expand ]] \
+  && (( _lastcomp[unambiguous_cursor] > ${#:-$PREFIX$SUFFIX} + 1 )); then
+    _autocomplete._main_complete expand-word _expand
+    compstate[insert]='unambiguous'
+  elif [[ $PREFIX$SUFFIX == *[\*\(\|\<\[\?\^\#]* ]]; then
+    _autocomplete._main_complete expand-word -
+  else
+    _autocomplete._main_complete expand-word _expand_alias _correct
+  fi
 }
 
 _autocomplete.curcontext() {
@@ -839,7 +850,6 @@ _autocomplete._main_complete() {
 _autocomplete.handle_long_list() {
   emulate -LR zsh -o noshortloops -o warncreateglobal -o extendedglob
 
-  # compstate[insert]=''
   compstate[list_max]=0
   _autocomplete.max_lines
   local max_lines=REPLY