Update taskwarrior completion to latest version (Jul 26 2015)

See relevant commit at:
https://git.tasktools.org/projects/TM/repos/task/commits/3158883dc4d251

plugins/taskwarrior/_task

 #compdef task
-# zsh completion for taskwarrior
 #
-# taskwarrior - a command line task list manager.
-#
-# Copyright 2010 - 2011 Johannes Schlatow
+# Copyright 2010 - 2015 Johannes Schlatow
 # Copyright 2009 P.C. Shyamshankar
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -30,6 +27,7 @@ typeset -g _task_cmds _task_projects _task_tags _task_config _task_modifiers
 _task_projects=($(task _projects))
 _task_tags=($(task _tags))
 _task_ids=($(task _ids))
+_task_zshids=( ${(f)"$(task _zshids)"} )
 _task_config=($(task _config))
 _task_columns=($(task _columns))
 _task_modifiers=(
@@ -50,11 +48,19 @@ _task_conjunctions=(
   'and' \
   'or' \
   'xor' \
-	'\)'
-	'\('
+  '\)' \
+  '\(' \
+  '<' \
+  '<=' \
+  '=' \
+  '!=' \
+  '>=' \
+  '>'
 )
-_task_cmds=($(task _commands))
-_task_zshcmds=( ${(f)"$(task _zshcommands)"} )
+_task_cmds=($(task _commands; task _aliases))
+_task_zshcmds=( ${(f)"$(task _zshcommands)"} sentinel:sentinel:sentinel )
+
+_task_aliases=($(task _aliases))
 
 _task() {
     _arguments -s -S \
@@ -89,11 +95,13 @@ _regex_words values 'task dates' \
   'soww:Start of work week' \
   'socw:Start of calendar week' \
   'som:Start of month' \
+  'soq:Start of quarter' \
   'soy:Start of year' \
   'eow:End of week' \
   'eoww:End of work week' \
   'eocw:End of calendar week' \
   'eom:End of month' \
+  'eoq:End of quarter' \
   'eoy:End of year' \
   'mon:Monday' \
   'tue:Tuesday'\
@@ -101,7 +109,16 @@ _regex_words values 'task dates' \
   'thu:Thursday' \
   'fri:Friday' \
   'sat:Saturday' \
-	'sun:Sunday'
+  'sun:Sunday' \
+  'good*friday:Good Friday' \
+  'easter:Easter' \
+  'eastermonday:Easter Monday' \
+  'ascension:Ascension' \
+  'pentecost:Pentecost' \
+  'midsommar:Midsommar' \
+  'midsommarafton:Midsommarafton' \
+  'later:Later' \
+  'someday:Some Day'
 _task_dates=("$reply[@]")
 
 local -a _task_reldates
@@ -121,6 +138,10 @@ task_dates=(
   \)
 )
 
+local -a task_zshids
+_regex_words values 'task IDs' $_task_zshids
+task_zshids=("$reply[@]")
+
 _regex_words values 'task frequencies' \
   'daily:Every day' \
   'day:Every day' \
@@ -128,7 +149,7 @@ _regex_words values 'task frequencies' \
   'weekly:Every week' \
   'biweekly:Every two weeks' \
   'fortnight:Every two weeks' \
-+ 'monthly:Every month' \
+  'monthly:Every month' \
   'quarterly:Every three months' \
   'semiannual:Every six months' \
   'annual:Every year' \
@@ -154,20 +175,25 @@ task_freqs=(
 # attributes
 local -a task_attributes
 _regex_words -t ':' default 'task attributes' \
+  'des*cription:Task description text' \
+  'status:Status of task - pending, completed, deleted, waiting' \
   'pro*ject:Project name:$task_projects' \
+  'pri*ority:priority:$task_priorities' \
   'du*e:Due date:$task_dates' \
-	'wa*it:Date until task becomes pending:$task_dates' \
   're*cur:Recurrence frequency:$task_freqs' \
-	'pri*ority:priority:$task_priorities' \
-	'un*til:Recurrence end date:$task_dates' \
-	'fg:Foreground color' \
-	'bg:Background color' \
-	'li*mit:Desired number of rows in report'
+  'un*til:Expiration date:$task_dates' \
+  'li*mit:Desired number of rows in report' \
+  'wa*it:Date until task becomes pending:$task_dates' \
+  'ent*ry:Date task was created:$task_dates' \
+  'end:Date task was completed/deleted:$task_dates' \
+  'st*art:Date task was started:$task_dates' \
+  'sc*heduled:Date task is scheduled to start:$task_dates' \
+  'dep*ends:Other tasks that this task depends upon:$task_zshids'
 task_attributes=("$reply[@]")
 
 args=(
   \( "$task_attributes[@]" \|
-	\( /'(project|due|wait|recur|priority|until|fg|bg|limit).'/- \( /$'[^:]#:'/ ":default:modifiers:compadd -S ':' -a _task_modifiers" \) \) \|
+  \( /'(project|description|status|entry|end|start|scheduled|depends|due|wait|recur|priority|until|limit).'/- \( /$'[^:]#:'/ ":default:modifiers:compadd -S ':' -a _task_modifiers" \) \) \|
   \( /'(rc).'/- \( /$'[^:]#:'/ ":arguments:config:compadd -S ':' -a _task_config" \) \) \|
   \( /'(+|-)'/- \( /"$word"/ ":values:remove tag:compadd -a _task_tags" \) \) \|
   \( /"$word"/ \)
@@ -186,27 +212,6 @@ _task_filter() {
   _describe -t default 'task conjunctions' _task_conjunctions
 }
 
-# merge completion
-(( $+functions[_task_merge] )) ||
-_task_merge() {
-	# TODO match URIs in .taskrc
-	_files
-}
-
-# push completion
-(( $+functions[_task_push] )) ||
-_task_push() {
-	# TODO match URIs in .taskrc
-	_files
-}
-
-# pull completion
-(( $+functions[_task_pull] )) ||
-_task_pull() {
-	# TODO match URIs in .taskrc
-	_files
-}
-
 # execute completion
 (( $+functions[_task_execute] )) ||
 _task_execute() {
@@ -219,6 +224,34 @@ _task_id() {
   _describe -t values 'task IDs' _task_zshids
 }
 
+# subcommand-only function
+(( $+functions[_task_subcommands] )) ||
+_task_subcommands() {
+  local -a subcommands
+  local _zshcmd
+  local cmd category desc
+  local lastcategory=''
+  # The list is sorted by category, in the right order.
+  for _zshcmd in "$_task_zshcmds[@]"; do
+    # Parse out the three fields
+    cmd=${_zshcmd%%:*}
+    category=${${_zshcmd#*:}%%:*}
+    desc=${_zshcmd#*:*:}
+
+    # Present each category as soon as the first entry in the *next* category
+    # is seen.
+    if [[ $category != $lastcategory && -n $lastcategory ]]; then
+      _describe -t ${lastcategory}-commands "task ${lastcategory} command" subcommands
+      subcommands=()
+    fi
+
+    # Log the subcommand; we will process it in some future iteration.
+    subcommands+=( "$cmd:$desc" )
+
+    lastcategory=$category
+  done
+}
+
 ## first level completion => task sub-command completion
 (( $+functions[_task_default] )) ||
 _task_default() {
@@ -240,11 +273,12 @@ _task_default() {
   # update IDs
   _task_zshids=( ${(f)"$(task _zshids)"} )
 
-	_describe -t commands 'task command' _task_zshcmds
-	_describe -t values 'task IDs' _task_zshids
+  _task_subcommands
+  _describe -t tasks 'task IDs' _task_zshids
+  _describe -t aliases 'task aliases' _task_aliases
   _call_function ret _task_filter
 
   return ret
 }
 
-_task
+_task "$@"