From 4b8c81fb53e2caaa74a33d5b62664a67427a7bbf Mon Sep 17 00:00:00 2001
From: Tuncer Ayaz <tuncer.ayaz@gmail.com>
Date: Sat, 10 Nov 2012 21:59:19 +0100
Subject: Implement 'rebar help CMD1 CMD2' and extend common 'rebar help' msg

* allow plugins to print help message for implemented commands
* append core rebar.config options to common 'rebar help' message
---
 src/rebar_appups.erl | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/rebar_appups.erl')

diff --git a/src/rebar_appups.erl b/src/rebar_appups.erl
index 0aeccb6..722f161 100644
--- a/src/rebar_appups.erl
+++ b/src/rebar_appups.erl
@@ -31,6 +31,9 @@
 
 -export(['generate-appups'/2]).
 
+%% for internal use only
+-export([info/2]).
+
 -define(APPUPFILEFORMAT, "%% appup generated for ~p by rebar (~p)~n"
         "{~p, [{~p, ~p}], [{~p, []}]}.~n").
 
@@ -82,6 +85,13 @@
 %% Internal functions
 %% ===================================================================
 
+info(help, 'generate-appups') ->
+    ?CONSOLE("Generate appup files.~n"
+             "~n"
+             "Valid command line options:~n"
+             "  previous_release=path~n",
+             []).
+
 get_apps(Name, OldVerPath, NewVerPath) ->
     OldApps = rebar_rel_utils:get_rel_apps(Name, OldVerPath),
     ?DEBUG("Old Version Apps: ~p~n", [OldApps]),
-- 
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