introduce dotnet complete command

scripts/register-completions.bash

@@ -0,0 +1,15 @@
+#!/bin/bash
+# Parameter completion for the dotnet CLI
+
+_dotnet_bash_complete()
+{
+  local word=${COMP_WORDS[COMP_CWORD]}
+  local dotnetPath=${COMP_WORDS[1]}
+
+  local completions=("$(./bin/Debug/netcoreapp1.0/osx.10.11-x64/publish/dotnet complete --position ${COMP_POINT} "${COMP_LINE}")")
+
+  # https://www.gnu.org/software/bash/manual/html_node/Programmable-Completion-Builtins.html
+  COMPREPLY=( $(compgen -W "$completions" -- "$word") )
+}
+
+complete -f -F _dotnet_bash_complete dotnet

scripts/register-completions.ps1

@@ -0,0 +1,6 @@
+Register-ArgumentCompleter -Native -CommandName dotnet -ScriptBlock {
+     param($commandName, $wordToComplete, $cursorPosition)
+         C:\dev\github\cli\artifacts\win10-x64\stage2\dotnet.exe complete --position $cursorPosition "$wordToComplete" | ForEach-Object {
+            [System.Management.Automation.CompletionResult]::new($_, $_, 'ParameterValue', $_)
+         }
+ }

scripts/register-completions.zsh

@@ -0,0 +1,12 @@
+# Parameter completion for the dotnet CLI
+
+_dotnet_zsh_complete() 
+{
+  local dotnetPath=$words[1]
+
+  local completions=("$(./bin/Debug/netcoreapp1.0/osx.10.11-x64/publish/dotnet complete "$words")")
+
+  reply=( "${(ps:\n:)completions}" )
+}
+
+compctl -K _dotnet_zsh_complete dotnet