Merge branch 'bjorn/remove-packages/OTP-10348'

* bjorn/remove-packages/OTP-10348: (22 commits)
  kernel: Remove the packages module
  kernel: Eliminate use of packages in code and code_server
  edoc: Remove support for packages
  syntax_tools: Remove support for packages
  reltool: Remove support for packages
  test_server: Remove support for packages
  sasl: Remove support for packages
  debugger: Remove support for packages
  c: Remove support for packages
  filename: Remove support for packages
  erl_pp_SUITE: Remove test of packages
  shell: Remove support for packages
  erl_parse: Remove support for packages
  qlc: Remove support for packages
  erl_eval: Remove support for packages
  erl_expand_records: Remove support for packages
  erl_lint: Remove support for packages
  compiler: Remove support for packages
  erts: Remove the packages aliases for BIFs
  erl_expand_records_SUITE: Eliminate use of packages
  ...

6 files changed, 27 insertions, 34 deletions

diff --git a/lib/edoc/src/edoc.erl b/lib/edoc/src/edoc.erl
index 5a599e6e97..599036f380 100644
--- a/lib/edoc/src/edoc.erl
+++ b/lib/edoc/src/edoc.erl
@@ -456,14 +456,14 @@ expand_sources(Ss, Opts) ->
 	  end,
     expand_sources(Ss1, Suffix, sets:new(), [], []).
 
-expand_sources([{P, F, D} | Fs], Suffix, S, As, Ms) ->
-    M = list_to_atom(packages:concat(P, filename:rootname(F, Suffix))),
+expand_sources([{'', F, D} | Fs], Suffix, S, As, Ms) ->
+    M = list_to_atom(filename:rootname(F, Suffix)),
     case sets:is_element(M, S) of
 	true ->
 	    expand_sources(Fs, Suffix, S, As, Ms);
 	false ->
 	    S1 = sets:add_element(M, S),
-	    expand_sources(Fs, Suffix, S1, [{M, P, F, D} | As],
+	    expand_sources(Fs, Suffix, S1, [{M, '', F, D} | As],
 			   [M | Ms])
     end;
 expand_sources([], _Suffix, _S, As, Ms) ->
diff --git a/lib/edoc/src/edoc_doclet.erl b/lib/edoc/src/edoc_doclet.erl
index d6561e10fc..a0c1ae1c0f 100644
--- a/lib/edoc/src/edoc_doclet.erl
+++ b/lib/edoc/src/edoc_doclet.erl
@@ -192,7 +192,7 @@ source({M, P, Name, Path}, Dir, Suffix, Env, Set, Private, Hidden,
 		andalso ((not is_hidden(Doc)) orelse Hidden) of
 		true ->
 		    Text = edoc:layout(Doc, Options),
-		    Name1 = packages:last(M) ++ Suffix,
+		    Name1 = atom_to_list(M) ++ Suffix,
                     Encoding = [{encoding,encoding(Doc)}],
 		    edoc_lib:write_file(Text, Dir, Name1, P, Encoding),
 		    {sets:add_element(Module, Set), Error};
@@ -205,9 +205,9 @@ source({M, P, Name, Path}, Dir, Suffix, Env, Set, Private, Hidden,
     end.
 
 check_name(M, M0, P0, File) ->
-    P = list_to_atom(packages:strip_last(M)),
-    N = packages:last(M),
-    N0 = packages:last(M0),
+    P = '',
+    N = M,
+    N0 = M0,
     case N of
 	[$? | _] ->
 	    %% A module name of the form '?...' is assumed to be caused
diff --git a/lib/edoc/src/edoc_extract.erl b/lib/edoc/src/edoc_extract.erl
index dcab816f54..67a95e80aa 100644
--- a/lib/edoc/src/edoc_extract.erl
+++ b/lib/edoc/src/edoc_extract.erl
@@ -121,7 +121,7 @@ source1(Tree, File0, Env, Opts, TypeDocs) ->
     Module = get_module_info(Tree, File),
     {Header, Footer, Entries} = collect(Forms, Module),
     Name = Module#module.name,
-    Package = list_to_atom(packages:strip_last(Name)),
+    Package = '',
     Env1 = Env#env{module = Name,
 		   package = Package,
 		   root = edoc_refs:relative_package_path('', Package)},
diff --git a/lib/edoc/src/edoc_lib.erl b/lib/edoc/src/edoc_lib.erl
index 942715b8ee..3d193c4bfa 100644
--- a/lib/edoc/src/edoc_lib.erl
+++ b/lib/edoc/src/edoc_lib.erl
@@ -269,6 +269,10 @@ is_name_1(_) -> false.
 
 to_atom(A) when is_atom(A) -> A;
 to_atom(S) when is_list(S) -> list_to_atom(S).
+
+to_list(A) when is_atom(A) -> atom_to_list(A);
+to_list(S) when is_list(S) -> S.
+
     
 %% @private
 unique([X | Xs]) -> [X | unique(Xs, X)];
@@ -695,8 +699,7 @@ write_file(Text, Dir, Name, Package) ->
     write_file(Text, Dir, Name, Package, [{encoding,latin1}]).
 
 write_file(Text, Dir, Name, Package, Options) ->
-    Dir1 = filename:join([Dir | packages:split(Package)]),
-    File = filename:join(Dir1, Name),
+    File = filename:join([Dir, to_list(Package), Name]),
     ok = filelib:ensure_dir(File),
     case file:open(File, [write] ++ Options) of
 	{ok, FD} ->
@@ -836,7 +839,7 @@ find_sources(Path, Pkg, Rec, Ext, Opts) ->
     lists:flatten(find_sources_1(Path, to_atom(Pkg), Rec, Ext, Skip)).
 
 find_sources_1([P | Ps], Pkg, Rec, Ext, Skip) ->
-    Dir = filename:join(P, filename:join(packages:split(Pkg))),
+    Dir = filename:join(P, atom_to_list(Pkg)),
     Fs1 = find_sources_1(Ps, Pkg, Rec, Ext, Skip),
     case filelib:is_dir(Dir) of
 	true ->
@@ -862,9 +865,9 @@ find_sources_2(Dir, Pkg, Rec, Ext, Skip) ->
 	    []
     end.
 
-find_sources_3(Es, Dir, Pkg, Rec, Ext, Skip) ->
+find_sources_3(Es, Dir, '', Rec, Ext, Skip) ->
     [find_sources_2(filename:join(Dir, E),
-		    to_atom(packages:concat(Pkg, E)), Rec, Ext, Skip)
+		    to_atom(E), Rec, Ext, Skip)
      || E <- Es, is_package_dir(E, Dir)].
 
 is_source_file(Name, Ext) ->
@@ -876,16 +879,16 @@ is_package_dir(Name, Dir) ->
 	andalso filelib:is_dir(filename:join(Dir, Name)).
 
 %% @private
-find_file([P | Ps], Pkg, Name) ->
-    Dir = filename:join(P, filename:join(packages:split(Pkg))),
-    File = filename:join(Dir, Name),
+find_file([P | Ps], []=Pkg, Name) ->
+    Pkg = [],
+    File = filename:join(P, Name),
     case filelib:is_file(File) of
 	true ->
 	    File;    
 	false ->
 	    find_file(Ps, Pkg, Name)
     end;    
-find_file([], _Pkg, _Name) ->
+find_file([], [], _Name) ->
     "".
 
 %% @private
diff --git a/lib/edoc/src/edoc_parser.yrl b/lib/edoc/src/edoc_parser.yrl
index 9351217618..cf1a2d6b11 100644
--- a/lib/edoc/src/edoc_parser.yrl
+++ b/lib/edoc/src/edoc_parser.yrl
@@ -318,10 +318,7 @@ tok_val(T) -> element(3, T).
 
 tok_line(T) -> element(2, T).
 
-qname([A]) ->
-    A;    % avoid unnecessary call to packages:concat/1.
-qname(List) ->
-    list_to_atom(packages:concat(lists:reverse(List))).
+qname([A]) -> A.
 
 union(Ts) ->
     case Ts of
diff --git a/lib/edoc/src/edoc_refs.erl b/lib/edoc/src/edoc_refs.erl
index 1f578a3b83..ea439490ed 100644
--- a/lib/edoc/src/edoc_refs.erl
+++ b/lib/edoc/src/edoc_refs.erl
@@ -126,7 +126,7 @@ abs_uri({package, P}, Env) ->
 module_ref(M, Env) ->
     case (Env#env.modules)(M) of
 	"" ->
-	    File = packages:last(M) ++ Env#env.file_suffix,
+	    File = atom_to_list(M) ++ Env#env.file_suffix,
 	    Path = relative_module_path(M, Env#env.package),
 	    join_uri(Path, escape_uri(File));
 	Base ->
@@ -134,8 +134,7 @@ module_ref(M, Env) ->
     end.
 
 module_absref(M, Env) ->
-    join_segments(packages:split(M))
-	++ escape_uri(Env#env.file_suffix).
+    escape_uri(atom_to_list(M)) ++ escape_uri(Env#env.file_suffix).
 
 package_ref(P, Env) ->
     case (Env#env.packages)(P) of
@@ -147,7 +146,7 @@ package_ref(P, Env) ->
     end.
 
 package_absref(P, Env) ->
-    join_uri(join_segments(packages:split(P)),
+    join_uri(escape_uri(atom_to_list(P)),
 	     escape_uri(Env#env.package_summary)).
 
 app_ref(A, Env) ->
@@ -179,14 +178,11 @@ join_segments([S | Ss]) ->
 %% The empty string is returned if the To module has only one segment,
 %% implying a local reference.
 
-relative_module_path(To, From) ->
-    case first(packages:split(To)) of
-	[] -> "";
-	P -> relative_path(P, packages:split(From))
-    end.
+relative_module_path(_To, _From) ->
+    "".
 
 relative_package_path(To, From) ->
-    relative_path(packages:split(To), packages:split(From)).
+    relative_path([atom_to_list(To)], [atom_to_list(From)]).
 
 %% This takes two lists of path segments (From, To). Note that an empty
 %% string will be returned if the paths are the same. Empty leading
@@ -210,6 +206,3 @@ relative_path_2([], []) ->
     "";
 relative_path_2([], Ts) ->
     join_segments(Ts).
-
-first([H | T]) when T /= [] -> [H | first(T)];
-first(_) -> [].