Bump bbmustache and fix templates (#1862)

* bump bbmustache to version 1.6.0

* Use alternative bbmustache brackets in templates

This fixes the problems where literal nested tuples (`{{a,b},c}` or
`{{a,b}}`) would blow up and spaces needed to be inserted.

priv/templates/otp_app.app.src

@@ -1,8 +1,9 @@
-{application, {{name}},
- [{description, "{{desc}}"},
+{{=@@ @@=}}
+{application, @@name@@,
+ [{description, "@@desc@@"},
   {vsn, "0.1.0"},
   {registered, []},
-  {mod, { {{name}}_app, []}},
+  {mod, {@@name@@_app, []}},
   {applications,
    [kernel,
     stdlib

priv/templates/plugin_README.md

@@ -1,7 +1,8 @@
-{{name}}
+{{=@@ @@=}}
+@@name@@
 =====
 
-{{desc}}
+@@desc@@
 
 Build
 -----
@@ -14,13 +15,13 @@ Use
 Add the plugin to your rebar config:
 
     {plugins, [
-        { {{name}}, ".*", {git, "git@host:user/{{name}}.git", {tag, "0.1.0"}}}
+        {@@name@@, {git, "https://host/user/@@name@@.git", {tag, "0.1.0"}}}
     ]}.
 
 Then just call your plugin directly in an existing application:
 
 
-    $ rebar3 {{name}}
-    ===> Fetching {{name}}
-    ===> Compiling {{name}}
+    $ rebar3 @@name@@
+    ===> Fetching @@name@@
+    ===> Compiling @@name@@
     <Plugin Output>

priv/templates/relx_rebar.config

@@ -1,8 +1,9 @@
+{{=@@ @@=}}
 {erl_opts, [debug_info]}.
 {deps, []}.
 
-{relx, [{release, { {{name}}, "0.1.0" },
-         [{{name}},
+{relx, [{release, {@@name@@, "0.1.0"},
+         [@@name@@,
           sasl]},
 
         {sys_config, "./config/sys.config"},

priv/templates/sup.erl

@@ -1,9 +1,10 @@
+{{=@@ @@=}}
 %%%-------------------------------------------------------------------
-%% @doc {{name}} top level supervisor.
+%% @doc @@name@@ top level supervisor.
 %% @end
 %%%-------------------------------------------------------------------
 
--module({{name}}_sup).
+-module(@@name@@_sup).
 
 -behaviour(supervisor).
 
@@ -31,7 +32,7 @@ start_link() ->
 %% Before OTP 18 tuples must be used to specify a child. e.g.
 %% Child :: {Id,StartFunc,Restart,Shutdown,Type,Modules}
 init([]) ->
-    {ok, { {one_for_all, 0, 1}, []} }.
+    {ok, {{one_for_all, 0, 1}, []}}.
 
 %%====================================================================
 %% Internal functions

priv/templates/sys.config

@@ -1,3 +1,4 @@
+{{=@@ @@=}}
 [
-  { {{name}}, []}
+  {@@name@@, []}
 ].

rebar.config

@@ -7,7 +7,7 @@
         {parse_trans,         "3.3.0"}, % force otp-21 compat
         {providers,           "1.7.0"},
         {getopt,              "1.0.1"},
-        {bbmustache,          "1.5.0"},
+        {bbmustache,          "1.6.0"},
         {relx,                "3.27.0"},
         {cf,                  "0.2.2"},
         {cth_readable,        "1.4.2"},

rebar.lock

@@ -1,5 +1,5 @@
 {"1.1.0",
-[{<<"bbmustache">>,{pkg,<<"bbmustache">>,<<"1.5.0">>},0},
+[{<<"bbmustache">>,{pkg,<<"bbmustache">>,<<"1.6.0">>},0},
  {<<"certifi">>,{pkg,<<"certifi">>,<<"2.3.1">>},0},
  {<<"cf">>,{pkg,<<"cf">>,<<"0.2.2">>},0},
  {<<"cth_readable">>,{pkg,<<"cth_readable">>,<<"1.4.2">>},0},
@@ -13,7 +13,7 @@
  {<<"ssl_verify_fun">>,{pkg,<<"ssl_verify_fun">>,<<"1.1.3">>},0}]}.
 [
 {pkg_hash,[
- {<<"bbmustache">>, <<"8CFDE0602E90A4057E161BF5288ADE854B4E511E2E8924966A8438730E958381">>},
+ {<<"bbmustache">>, <<"7AC372AEC621A69C369DF237FBD9986CAABCDD6341089FE5F42E5A7A4AC706B8">>},
  {<<"certifi">>, <<"D0F424232390BF47D82DA8478022301C561CF6445B5B5FB6A84D49A9E76D2639">>},
  {<<"cf">>, <<"7F2913FFF90ABCABD0F489896CFEB0B0674F6C8DF6C10B17A83175448029896C">>},
  {<<"cth_readable">>, <<"0F57B4EB7DA7F5438F422312245F9143A1B3118C11B6BAE5C3D1391C9EE88322">>},