Add zsh completion script

For enable to shell-completion in zsh.

priv/shell-completion/zsh/_rebar

@@ -0,0 +1,79 @@
+#compdef rebar
+
+local curcontext=$curcontext state ret=1
+typeset -ga _rebar_global_opts
+
+_rebar_global_opts=(
+  '(--help -h)'{--help,-h}'[Show the program options]'
+  '(--commands -c)'{--commands,-c}'[Show available commands]'
+  '(--version -V)'{--version,-V}'[Show version information]'
+  '(-vvv -vv -v)'--verbose+'[Verbosity level. Default: 0]:verbosity level:(0 1 2 3)'
+  '(-vvv)-v[Slightly more verbose output]'
+  '(-vvv)-vv[More verbose output]'
+  '(-v -vv)-vvv[Most verbose output]'
+  '(--force -f)'{--force,-f}'[Force]'
+  '-D+[Define compiler macro]'
+  '(--jobs -j)'{--jobs+,-j+}'[Number of concurrent workers a command may use. Default: 3]:workers:(1 2 3 4 5 6 7 8 9)'
+  '(--config -C)'{--config,-C}'[Rebar config file to use]:files:_files'
+  '(--profile -p)'{--profile,-p}'[Profile this run of rebar]'
+  '(--keep-going -k)'{--keep-going,-k}'[Keep running after a command fails]'
+)
+
+_rebar () {
+  _arguments -C $_rebar_global_opts \
+    '*::command and variable:->cmd_and_var' \
+    && return
+
+  case $state in
+    cmd_and_var)
+      _values -S = 'variables' \
+        'clean[Clean]' \
+        'compile[Compile sources]' \
+        'create[Create skel based on template and vars]' \
+        'create-app[Create simple app skel]' \
+        'create-node[Create simple node skel]' \
+        'list-template[List avaiavle templates]' \
+        'doc[Generate Erlang program documentation]' \
+        'check-deps[Display to be fetched dependencies]' \
+        'get-deps[Fetch dependencies]' \
+        'update-deps[Update fetched dependencies]' \
+        'delete-deps[Delete fetched dependencies]' \
+        'list-deps[List dependencies]' \
+        'generate[Build release with reltool]' \
+        'overlay[Run reltool overlays only]' \
+        'generate-appups[Generate appup files]' \
+        'generate-upgrade[Build an upgrade package]' \
+        'eunit[Run eunit tests]' \
+        'ct[Run common_test suites]' \
+        'qc[Test QuickCheck properties]' \
+        'xref[Run cross reference analysis]' \
+        'help[Show the program options]' \
+        'version[Show version information]' \
+        'apps[Application name]:' \
+        'case[Case]:' \
+        'dump_spec[Dump specify]:' \
+        'jobs[Number of workers]::workers:(0 1 2 3 4 5 6 7 8 9)' \
+        'suites[Suites name]::suite name:_path_files -W "(src test)" -g "*.erl(:r)"' \
+        'verbose[Verbosity level]::verbosity level:(0 1 2 3)' \
+        'appid[Application id]:' \
+        'previous_release[Previous release number]:' \
+        'nodeid[Node id]:' \
+        'root_dir[Root directory]::directory:_files -/' \
+        'skip_deps[Switch to skip deps]::flag:(true false)' \
+        'skip_app[Switch to skip app]::flag:(true false)' \
+        'template[Templace name]:' \
+        'template_dir[Template directory]::directory:_files -/' \
+        && ret=0
+      ;;
+  esac
+}
+
+_rebar
+
+# Local variables:
+# mode: shell-script
+# sh-basic-offset: 2
+# sh-indent-comment: t
+# indent-tabs-mode: nil
+# End:
+# ex: sw=2 ts=2 et filetype=sh