68 files changed, 313 insertions, 313 deletions

diff --git a/src/luarocks/admin/cache.lua b/src/luarocks/admin/cache.lua
index 1fd4d55a..10b273ea 100644
--- a/src/luarocks/admin/cache.lua
+++ b/src/luarocks/admin/cache.lua
@@ -24,7 +24,7 @@ function cache.get_server_urls(server, upload_server)
       elseif upload_server.http then download_url = "http://"..upload_server.http
       elseif upload_server.ftp then download_url = "ftp://"..upload_server.ftp
       end
-      
+
       if upload_server.ftp then login_url = "ftp://"..upload_server.ftp
       elseif upload_server.sftp then login_url = "sftp://"..upload_server.sftp
       end
@@ -57,7 +57,7 @@ local function download_cache(protocol, server_path, user, password)
       return fs.execute(cfg.variables.RSYNC.." "..cfg.variables.RSYNCFLAGS.." -e ssh "..user.."@"..srv..":"..path.."/ ./")
    elseif protocol == "file" then
       return fs.copy_contents(server_path, ".")
-   else 
+   else
       local login_info = ""
       if user then login_info = " --user="..user end
       if password then login_info = login_info .. " --password="..password end
@@ -74,7 +74,7 @@ function cache.refresh_local_cache(url, given_user, given_password)
    end
 
    fs.change_dir(local_cache)
-   
+
    util.printout("Refreshing cache "..local_cache.."...")
 
    ok = download_cache(protocol, server_path, user, password)
diff --git a/src/luarocks/admin/cmd/add.lua b/src/luarocks/admin/cmd/add.lua
index 5011c680..aa444c50 100644
--- a/src/luarocks/admin/cmd/add.lua
+++ b/src/luarocks/admin/cmd/add.lua
@@ -40,23 +40,23 @@ local function add_files_to_server(refresh, rockfiles, server, upload_server, do
    assert(type(rockfiles) == "table")
    assert(type(server) == "string")
    assert(type(upload_server) == "table" or not upload_server)
-   
+
    local download_url, login_url = cache.get_server_urls(server, upload_server)
    local at = fs.current_dir()
    local refresh_fn = refresh and cache.refresh_local_cache or cache.split_server_url
-   
+
    local local_cache, protocol, server_path, user, password = refresh_fn(download_url, cfg.upload_user, cfg.upload_password)
    if not local_cache then
       return nil, protocol
    end
-   
+
    if not login_url then
       login_url = protocol.."://"..server_path
    end
-   
+
    local ok, err = fs.change_dir(at)
    if not ok then return nil, err end
-   
+
    local files = {}
    for _, rockfile in ipairs(rockfiles) do
       if fs.exists(rockfile) then
@@ -77,9 +77,9 @@ local function add_files_to_server(refresh, rockfiles, server, upload_server, do
 
    util.printout("Updating manifest...")
    writer.make_manifest(local_cache, "one", true)
-   
+
    zip_manifests()
-   
+
    if fs.exists("index.html") then
       do_index = true
    end
diff --git a/src/luarocks/admin/cmd/make_manifest.lua b/src/luarocks/admin/cmd/make_manifest.lua
index b4f2ca5b..18f74b5d 100644
--- a/src/luarocks/admin/cmd/make_manifest.lua
+++ b/src/luarocks/admin/cmd/make_manifest.lua
@@ -27,13 +27,13 @@ end
 -- or nil and an error message.
 function make_manifest.command(args)
    local repo = args.repository or cfg.rocks_dir
-  
+
    util.printout("Making manifest for "..repo)
-   
+
    if repo:match("/lib/luarocks") and not args.local_tree then
       util.warning("This looks like a local rocks tree, but you did not pass --local-tree.")
    end
-   
+
    local ok, err = writer.make_manifest(repo, deps.get_deps_mode(args), not args.local_tree)
    if ok and not args.local_tree then
       util.printout("Generating index.html for "..repo)
diff --git a/src/luarocks/admin/cmd/refresh_cache.lua b/src/luarocks/admin/cmd/refresh_cache.lua
index 81959953..f8d51893 100644
--- a/src/luarocks/admin/cmd/refresh_cache.lua
+++ b/src/luarocks/admin/cmd/refresh_cache.lua
@@ -18,7 +18,7 @@ function refresh_cache.command(args)
    local server, upload_server = cache.get_upload_server(args.server)
    if not server then return nil, upload_server end
    local download_url = cache.get_server_urls(server, upload_server)
-   
+
    local ok, err = cache.refresh_local_cache(download_url, cfg.upload_user, cfg.upload_password)
    if not ok then
       return nil, err
diff --git a/src/luarocks/admin/cmd/remove.lua b/src/luarocks/admin/cmd/remove.lua
index de58f7a3..5d4c5fbb 100644
--- a/src/luarocks/admin/cmd/remove.lua
+++ b/src/luarocks/admin/cmd/remove.lua
@@ -32,7 +32,7 @@ local function remove_files_from_server(refresh, rockfiles, server, upload_serve
    local download_url, login_url = cache.get_server_urls(server, upload_server)
    local at = fs.current_dir()
    local refresh_fn = refresh and cache.refresh_local_cache or cache.split_server_url
-   
+
    local local_cache, protocol, server_path, user, password = refresh_fn(download_url, cfg.upload_user, cfg.upload_password)
    if not local_cache then
       return nil, protocol
@@ -40,10 +40,10 @@ local function remove_files_from_server(refresh, rockfiles, server, upload_serve
    if protocol ~= "rsync" then
       return nil, "This command requires 'rsync', check your configuration."
    end
-   
+
    local ok, err = fs.change_dir(at)
    if not ok then return nil, err end
-   
+
    local nr_files = 0
    for _, rockfile in ipairs(rockfiles) do
       local basename = dir.base_name(rockfile)
diff --git a/src/luarocks/admin/index.lua b/src/luarocks/admin/index.lua
index 76795104..64c8c1eb 100644
--- a/src/luarocks/admin/index.lua
+++ b/src/luarocks/admin/index.lua
@@ -87,7 +87,7 @@ local index_footer_begin = [[
 <a href="manifest">manifest file</a>
 ]]
 local index_manifest_ver = [[
-&bull; <a href="manifest-$VER">Lua $VER manifest file</a> (<a href="manifest-$VER.zip">zip</a>) 
+&bull; <a href="manifest-$VER">Lua $VER manifest file</a> (<a href="manifest-$VER.zip">zip</a>)
 ]]
 local index_footer_end = [[
 </p>
@@ -129,7 +129,7 @@ function index.make_index(repo)
    end
    local manifest = manif.load_manifest(repo)
    local out = io.open(dir.path(repo, "index.html"), "w")
-   
+
    out:write(index_header)
    for package, version_list in util.sortedpairs(manifest.repository) do
       local latest_rockspec = nil
diff --git a/src/luarocks/build.lua b/src/luarocks/build.lua
index ae529856..0aecca3e 100644
--- a/src/luarocks/build.lua
+++ b/src/luarocks/build.lua
@@ -328,7 +328,7 @@ local function write_rock_dir_files(rockspec, opts)
    local name, version = rockspec.name, rockspec.version
 
    fs.copy(rockspec.local_abs_filename, path.rockspec_file(name, version), "read")
-   
+
    local deplock_file = deplocks.get_abs_filename(rockspec.name)
    if deplock_file then
       fs.copy(deplock_file, dir.path(path.install_dir(name, version), "luarocks.lock"), "read")
@@ -375,7 +375,7 @@ function build.build_rockspec(rockspec, opts)
    if opts.pin then
       deplocks.init(rockspec.name, ".")
    end
- 
+
    ok, err = process_dependencies(rockspec, opts)
    if not ok then return nil, err end
 
@@ -385,7 +385,7 @@ function build.build_rockspec(rockspec, opts)
          deplocks.write_file()
       end
       return name, version
-   end   
+   end
 
    local dirs, err
    local rollback
@@ -405,13 +405,13 @@ function build.build_rockspec(rockspec, opts)
 
    ok, err = build.apply_patches(rockspec)
    if not ok then return nil, err end
-   
+
    ok, err = check_macosx_deployment_target(rockspec)
    if not ok then return nil, err end
-   
+
    ok, err = run_build_driver(rockspec, opts.no_install)
    if not ok then return nil, err end
-   
+
    if opts.no_install then
       fs.pop_dir()
       if opts.need_to_fetch then
@@ -422,7 +422,7 @@ function build.build_rockspec(rockspec, opts)
 
    ok, err = install_files(rockspec, dirs)
    if not ok then return nil, err end
-   
+
    for _, d in pairs(dirs) do
       fs.remove_dir_if_empty(d.name)
    end
@@ -441,7 +441,7 @@ function build.build_rockspec(rockspec, opts)
 
    ok, err = repos.deploy_files(name, version, repos.should_wrap_bin_scripts(rockspec), opts.deps_mode)
    if not ok then return nil, err end
-   
+
    util.remove_scheduled_function(rollback)
    rollback = util.schedule_function(function()
       repos.delete_version(name, version, opts.deps_mode)
diff --git a/src/luarocks/build/builtin.lua b/src/luarocks/build/builtin.lua
index 6241c718..98db29da 100644
--- a/src/luarocks/build/builtin.lua
+++ b/src/luarocks/build/builtin.lua
@@ -266,7 +266,7 @@ function builtin.run(rockspec, no_install)
    local lib_modules = {}
    local luadir = path.lua_dir(rockspec.name, rockspec.version)
    local libdir = path.lib_dir(rockspec.name, rockspec.version)
-   
+
    if not build.modules then
       if rockspec:format_is_at_least("3.0") then
          local libs, incdirs, libdirs = autoextract_libs(rockspec.external_dependencies, rockspec.variables)
diff --git a/src/luarocks/build/cmake.lua b/src/luarocks/build/cmake.lua
index d7ecc83c..b7a4786e 100644
--- a/src/luarocks/build/cmake.lua
+++ b/src/luarocks/build/cmake.lua
@@ -36,7 +36,7 @@ function cmake.run(rockspec, no_install)
 
    -- Execute cmake with variables.
    local args = ""
-   
+
    -- Try to pick the best generator. With msvc and x64, CMake does not select it by default so we need to be explicit.
    if cfg.cmake_generator then
       args = args .. ' -G"'..cfg.cmake_generator.. '"'
@@ -71,7 +71,7 @@ function cmake.run(rockspec, no_install)
          return nil, "Failed installing."
       end
    end
-   
+
    return true
 end
 
diff --git a/src/luarocks/build/command.lua b/src/luarocks/build/command.lua
index 309c4a16..b0c4aa79 100644
--- a/src/luarocks/build/command.lua
+++ b/src/luarocks/build/command.lua
@@ -14,7 +14,7 @@ function command.run(rockspec, not_install)
    assert(rockspec:type() == "rockspec")
 
    local build = rockspec.build
-   
+
    util.variable_substitutions(build, rockspec.variables)
 
    local env = {
diff --git a/src/luarocks/build/make.lua b/src/luarocks/build/make.lua
index ccab1af0..4345ddff 100644
--- a/src/luarocks/build/make.lua
+++ b/src/luarocks/build/make.lua
@@ -13,7 +13,7 @@ local cfg = require("luarocks.core.cfg")
 -- configured through variables.MAKE in the config files, or
 -- the appropriate platform-specific default).
 -- @param pass boolean: If true, run make; if false, do nothing.
--- @param target string: The make target; an empty string indicates 
+-- @param target string: The make target; an empty string indicates
 -- the default target.
 -- @param variables table: A table containing string-string key-value
 -- pairs representing variable assignments to be passed to make.
@@ -42,7 +42,7 @@ function make.run(rockspec, not_install)
    assert(rockspec:type() == "rockspec")
 
    local build = rockspec.build
-   
+
    if build.build_pass == nil then build.build_pass = true end
    if build.install_pass == nil then build.install_pass = true end
    build.build_variables = build.build_variables or {}
@@ -56,9 +56,9 @@ function make.run(rockspec, not_install)
       build.install_target = "-f "..makefile.." "..build.install_target
    end
 
-   if build.variables then   
+   if build.variables then
       for var, val in pairs(build.variables) do
-         build.build_variables[var] = val 
+         build.build_variables[var] = val
          build.install_variables[var] = val
       end
    end
@@ -67,9 +67,9 @@ function make.run(rockspec, not_install)
 
    util.variable_substitutions(build.build_variables, rockspec.variables)
    util.variable_substitutions(build.install_variables, rockspec.variables)
-   
+
    local auto_variables = { "CC" }
-   
+
    for _, variable in pairs(auto_variables) do
       if not build.build_variables[variable] then
          build.build_variables[variable] = rockspec.variables[variable]
@@ -79,7 +79,7 @@ function make.run(rockspec, not_install)
       end
    end
 
-   -- backwards compatibility 
+   -- backwards compatibility
    local make_cmd = cfg.make or rockspec.variables.MAKE
 
    local ok = make_pass(make_cmd, build.build_pass, build.build_target, build.build_variables)
diff --git a/src/luarocks/cmd.lua b/src/luarocks/cmd.lua
index 21f35e20..7037c734 100644
--- a/src/luarocks/cmd.lua
+++ b/src/luarocks/cmd.lua
@@ -63,7 +63,7 @@ do
    end
 
    process_tree_args = function(args, project_dir)
-   
+
       if args.global then
          cfg.local_by_default = false
       end
@@ -221,7 +221,7 @@ do
          end
          return nil
       end
-   
+
       local function find_default_lua_version(args, project_dir)
          if hardcoded.FORCE_CONFIG then
             return nil
@@ -250,7 +250,7 @@ do
          end
          return nil
       end
-   
+
       local function find_version_from_config(dirname)
          return fun.find(util.lua_versions("descending"), function(v)
             if util.exists(dir.path(dirname, ".luarocks", "config-"..v..".lua")) then
@@ -258,12 +258,12 @@ do
             end
          end)
       end
-   
+
       local function detect_lua_via_args(args, project_dir)
          local lua_version = args.lua_version
                              or find_default_lua_version(args, project_dir)
                              or (project_dir and find_version_from_config(project_dir))
-      
+
          if args.lua_dir then
             local detected, err = util.find_lua(args.lua_dir, lua_version)
             if not detected then
@@ -274,7 +274,7 @@ do
             end
             return detected
          end
-      
+
          if lua_version then
             local detected = search_lua_in_path(lua_version)
             if detected then
@@ -284,10 +284,10 @@ do
                lua_version = lua_version,
             }
          end
-         
+
          return {}
       end
-      
+
       detect_config_via_args = function(args)
          local project_dir, given = find_project_dir(args.project_tree)
          local detected = detect_lua_via_args(args, project_dir)
@@ -304,15 +304,15 @@ do
          return detected
       end
    end
-   
+
    init_config = function(args)
       local detected = detect_config_via_args(args)
-   
+
       local ok, err = cfg.init(detected, util.warning)
       if not ok then
          return nil, err
       end
-      
+
       return (detected.lua_dir ~= nil)
    end
 end
diff --git a/src/luarocks/cmd/build.lua b/src/luarocks/cmd/build.lua
index d1fccfdd..4500bcc9 100644
--- a/src/luarocks/cmd/build.lua
+++ b/src/luarocks/cmd/build.lua
@@ -145,7 +145,7 @@ function cmd_build.command(args)
          return name, version, errcode
       end)
    end
-   
+
    local ok, err = fs.check_command_permissions(args)
    if not ok then
       return nil, err, cmd.errorcodes.PERMISSIONDENIED
diff --git a/src/luarocks/cmd/config.lua b/src/luarocks/cmd/config.lua
index ab1b9da7..6a73c7ff 100644
--- a/src/luarocks/cmd/config.lua
+++ b/src/luarocks/cmd/config.lua
@@ -29,7 +29,7 @@ Query information about the LuaRocks configuration.
   * `lua_dir` is a special key as it checks for a valid Lua installation
     (equivalent to --lua-dir) and sets several keys at once.
   * `lua_version` is a special key as it changes the default Lua version
-    used by LuaRocks commands (equivalent to passing --lua-version). 
+    used by LuaRocks commands (equivalent to passing --lua-version).
 
   Examples:
      luarocks config variables.OPENSSL_DIR /usr/local/openssl
@@ -114,7 +114,7 @@ local function traverse_varstring(var, tbl, fn, missing_parent)
          k, r = var:match("^([^[]+)(%[.*)$")
       end
    end
-   
+
    if k then
       if not tbl[k] and missing_parent then
          missing_parent(tbl, k)
@@ -131,7 +131,7 @@ local function traverse_varstring(var, tbl, fn, missing_parent)
    if i then
       var = tonumber(i)
    end
-   
+
    return fn(tbl, var)
 end
 
@@ -179,12 +179,12 @@ local function write_entries(keys, scope, do_unset)
    if scope == "project" and not cfg.config_files.project then
       return nil, "Current directory is not part of a project. You may want to run `luarocks init`."
    end
-   
+
    local tbl, err = persist.load_config_file_if_basic(cfg.config_files[scope].file, cfg)
    if not tbl then
       return nil, err
    end
-   
+
    for var, val in util.sortedpairs(keys) do
       traverse_varstring(var, tbl, function(t, k)
          if do_unset then
@@ -242,7 +242,7 @@ end
 function config_cmd.command(args)
    deps.check_lua_incdir(cfg.variables, args.lua_version or cfg.lua_version)
    deps.check_lua_libdir(cfg.variables, args.lua_version or cfg.lua_version)
-   
+
    -- deprecated flags
    if args.lua_incdir then
       print(cfg.variables.LUA_INCDIR)
@@ -287,7 +287,7 @@ function config_cmd.command(args)
       end
       print("Lua version will default to " .. args.value .. " in " .. prefix)
    end
-   
+
    if args.key == "lua_dir" and args.value then
       local scope = get_scope(args)
       local keys = {
diff --git a/src/luarocks/cmd/doc.lua b/src/luarocks/cmd/doc.lua
index 2ab7e43c..ae471230 100644
--- a/src/luarocks/cmd/doc.lua
+++ b/src/luarocks/cmd/doc.lua
@@ -67,7 +67,7 @@ function doc.command(args)
       return try_to_open_homepage(args.rock, args.namespace, args.version)
    end
    local name, version = iname, iversion
-   
+
    local rockspec, err = fetch.load_local_rockspec(path.rockspec_file(name, version, repo))
    if not rockspec then return nil,err end
    local descript = rockspec.description or {}
@@ -77,7 +77,7 @@ function doc.command(args)
    end
 
    local directory = path.install_dir(name, version, repo)
-   
+
    local docdir
    local directories = { "doc", "docs" }
    for _, d in ipairs(directories) do
@@ -101,7 +101,7 @@ function doc.command(args)
    local htmlpatt = "%.html?$"
    local extensions = { htmlpatt, "%.md$", "%.txt$",  "%.textile$", "" }
    local basenames = { "index", "readme", "manual" }
-   
+
    local porcelain = args.porcelain
    if #files > 0 then
       util.title("Documentation files for "..name.." "..version, porcelain)
@@ -116,11 +116,11 @@ function doc.command(args)
          end
       end
    end
-   
+
    if args.list then
       return true
    end
-   
+
    for _, extension in ipairs(extensions) do
       for _, basename in ipairs(basenames) do
          local filename = basename..extension
diff --git a/src/luarocks/cmd/download.lua b/src/luarocks/cmd/download.lua
index 1f844595..eae82439 100644
--- a/src/luarocks/cmd/download.lua
+++ b/src/luarocks/cmd/download.lua
@@ -43,7 +43,7 @@ function cmd_download.command(args)
    elseif args.arch then
       arch = args.arch
    end
-   
+
    local dl, err = download.download(arch, args.name, args.namespace, args.version, args.all, args.check_lua_versions)
    return dl and true, err
 end
diff --git a/src/luarocks/cmd/init.lua b/src/luarocks/cmd/init.lua
index 5f269e22..af88760f 100644
--- a/src/luarocks/cmd/init.lua
+++ b/src/luarocks/cmd/init.lua
@@ -30,7 +30,7 @@ local function write_gitignore(entries)
       fd:close()
       gitignore = "\n" .. gitignore .. "\n"
    end
-   
+
    fd = io.open(".gitignore", gitignore and "a" or "w")
    for _, entry in ipairs(entries) do
       entry = "/" .. entry
@@ -64,7 +64,7 @@ function init.command(args)
    if not ok then
       return nil, err
    end
-   
+
    local has_rockspec = false
    for file in fs.dir() do
       if file:match("%.rockspec$") then
@@ -97,7 +97,7 @@ function init.command(args)
       fs.delete(lua_wrapper)
       fs.delete(config_file)
    end
-   
+
    local config_tbl, err = persist.load_config_file_if_basic(config_file, cfg)
    if config_tbl then
       local globals = {
@@ -131,7 +131,7 @@ function init.command(args)
    else
       util.printout("Will not attempt to overwrite " .. config_file)
    end
-   
+
    ok, err = persist.save_default_lua_version(".luarocks", cfg.lua_version)
    if not ok then
       util.printout("Failed setting default Lua version: " .. err)
@@ -158,7 +158,7 @@ function init.command(args)
          write_lua_wrapper = false
       end
    end
-   
+
    if write_lua_wrapper then
       local interp = dir.path(cfg.variables["LUA_BINDIR"], cfg.lua_interpreter)
       if util.check_lua_version(interp, cfg.lua_version) then
diff --git a/src/luarocks/cmd/install.lua b/src/luarocks/cmd/install.lua
index 760649b0..da9e1ce3 100644
--- a/src/luarocks/cmd/install.lua
+++ b/src/luarocks/cmd/install.lua
@@ -75,16 +75,16 @@ function install.install_binary_rock(rock_file, opts)
    if not name then
       return nil, "Filename "..rock_file.." does not match format 'name-version-revision.arch.rock'."
    end
-   
+
    if arch ~= "all" and arch ~= cfg.arch then
       return nil, "Incompatible architecture "..arch, "arch"
    end
    if repos.is_installed(name, version) then
       repos.delete_version(name, version, opts.deps_mode)
    end
-   
+
    local install_dir = path.install_dir(name, version)
-   
+
    local rollback = util.schedule_function(function()
       fs.delete(install_dir)
       fs.remove_dir_if_empty(path.versions_dir(name))
@@ -139,7 +139,7 @@ end
 -- @param rock_file string: local or remote filename of a rock.
 -- @param opts table: installation options
 -- @return (string, string) or (nil, string, [string]): Name and version of
--- the rock whose dependencies were installed if succeeded or nil and an error message 
+-- the rock whose dependencies were installed if succeeded or nil and an error message
 -- followed by an error code.
 function install.install_binary_rock_deps(rock_file, opts)
    assert(type(rock_file) == "string")
@@ -149,7 +149,7 @@ function install.install_binary_rock_deps(rock_file, opts)
    if not name then
       return nil, "Filename "..rock_file.." does not match format 'name-version-revision.arch.rock'."
    end
-   
+
    if arch ~= "all" and arch ~= cfg.arch then
       return nil, "Incompatible architecture "..arch, "arch"
    end
@@ -158,7 +158,7 @@ function install.install_binary_rock_deps(rock_file, opts)
 
    local ok, err, errcode = fetch.fetch_and_unpack_rock(rock_file, install_dir, opts.verify)
    if not ok then return nil, err, errcode end
-   
+
    local rockspec, err = fetch.load_rockspec(path.rockspec_file(name, version))
    if err then
       return nil, "Failed loading rockspec for installed package: "..err, errcode
diff --git a/src/luarocks/cmd/lint.lua b/src/luarocks/cmd/lint.lua
index 20c842ff..47a3da90 100644
--- a/src/luarocks/cmd/lint.lua
+++ b/src/luarocks/cmd/lint.lua
@@ -33,8 +33,8 @@ function lint.command(args)
    end
 
    local ok = true
-   
-   -- This should have been done in the type checker, 
+
+   -- This should have been done in the type checker,
    -- but it would break compatibility of other commands.
    -- Making 'lint' alone be stricter shouldn't be a problem,
    -- because extra-strict checks is what lint-type commands
diff --git a/src/luarocks/cmd/list.lua b/src/luarocks/cmd/list.lua
index aa815ea3..7b2682f6 100644
--- a/src/luarocks/cmd/list.lua
+++ b/src/luarocks/cmd/list.lua
@@ -36,13 +36,13 @@ local function check_outdated(trees, query)
 
       local query_available = queries.new(name:lower())
       local results_available, err = search.search_repos(query_available)
-      
+
       if results_available[name] then
          local available_versions = util.keys(results_available[name])
          table.sort(available_versions, vers.compare_versions)
          local latest_available = available_versions[1]
          local latest_available_repo = results_available[name][latest_available][1].repo
-         
+
          if vers.compare_versions(latest_available, latest_installed) then
             table.insert(outdated, { name = name, installed = latest_installed, available = latest_available, repo = latest_available_repo })
          end
@@ -76,11 +76,11 @@ function list.command(args)
       trees = { args.tree }
       title = title .. " in " .. args.tree
    end
-   
+
    if args.outdated then
       return list_outdated(trees, query, args.porcelain)
    end
-   
+
    local results = {}
    for _, tree in ipairs(trees) do
       local ok, err, errcode = search.local_manifest_search(results, path.rocks_dir(tree), query)
diff --git a/src/luarocks/cmd/new_version.lua b/src/luarocks/cmd/new_version.lua
index fc15ef46..49479910 100644
--- a/src/luarocks/cmd/new_version.lua
+++ b/src/luarocks/cmd/new_version.lua
@@ -60,7 +60,7 @@ local function try_replace(tbl, field, old, new)
    if new_field ~= old_field then
       util.printout("Guessing new '"..field.."' field as "..new_field)
       tbl[field] = new_field
-      return true      
+      return true
    end
    return false
 end
@@ -104,7 +104,7 @@ local function check_url_and_update_md5(out_rs, invalid_is_error)
       end
    end
 end
- 
+
 local function update_source_section(out_rs, url, tag, old_ver, new_ver)
    if tag then
       out_rs.source.tag = tag
@@ -144,7 +144,7 @@ local function update_source_section(out_rs, url, tag, old_ver, new_ver)
    end
    return true
 end
- 
+
 function new_version.command(args)
    if not args.rock then
       local err
@@ -153,7 +153,7 @@ function new_version.command(args)
          return nil, err
       end
    end
-   
+
    local filename, err
    if args.rock:match("rockspec$") then
       filename, err = fetch.fetch_url(args.rock)
@@ -178,7 +178,7 @@ function new_version.command(args)
    if args.tag and not args.new_version then
       args.new_version = args.tag:gsub("^v", "")
    end
-   
+
    local out_dir
    if args.dir then
       out_dir = dir.normalize(args.dir)
@@ -196,7 +196,7 @@ function new_version.command(args)
       new_rev = tonumber(old_rev) + 1
    end
    local new_rockver = new_ver:gsub("-", "")
-   
+
    local out_rs, err = persist.load_into_table(filename)
    local out_name = out_rs.package:lower()
    out_rs.version = new_rockver.."-"..new_rev
@@ -207,21 +207,21 @@ function new_version.command(args)
    if out_rs.build and out_rs.build.type == "module" then
       out_rs.build.type = "builtin"
    end
-   
+
    local out_filename = out_name.."-"..new_rockver.."-"..new_rev..".rockspec"
    if out_dir then
       out_filename = dir.path(out_dir, out_filename)
       fs.make_dir(out_dir)
    end
    persist.save_from_table(out_filename, out_rs, type_rockspec.order)
-   
+
    util.printout("Wrote "..out_filename)
 
    local valid_out_rs, err = fetch.load_local_rockspec(out_filename)
    if not valid_out_rs then
       return nil, "Failed loading generated rockspec: "..err
    end
-   
+
    return true
 end
 
diff --git a/src/luarocks/cmd/path.lua b/src/luarocks/cmd/path.lua
index 9d6a8217..9b6fee71 100644
--- a/src/luarocks/cmd/path.lua
+++ b/src/luarocks/cmd/path.lua
@@ -10,11 +10,11 @@ local fs = require("luarocks.fs")
 function path_cmd.add_to_parser(parser)
    local cmd = parser:command("path", [[
 Returns the package path currently configured for this installation
-of LuaRocks, formatted as shell commands to update LUA_PATH and LUA_CPATH. 
+of LuaRocks, formatted as shell commands to update LUA_PATH and LUA_CPATH.
 
-On Unix systems, you may run: 
+On Unix systems, you may run:
   eval `luarocks path`
-And on Windows: 
+And on Windows:
   luarocks path > "%temp%\_lrp.bat" && call "%temp%\_lrp.bat" && del "%temp%\_lrp.bat"]],
   util.see_also())
       :summary("Return the currently configured package path.")
@@ -56,7 +56,7 @@ function path_cmd.command(args)
       lr_cpath = lr_cpath .. ";" .. package.cpath
       lr_bin = lr_bin .. path_sep .. clean_path
    end
-   
+
    local lpath_var, lcpath_var = util.lua_path_variables()
 
    util.printout(fs.export_cmd(lpath_var, util.cleanup_path(lr_path, ';', cfg.lua_version, args.append)))
diff --git a/src/luarocks/cmd/purge.lua b/src/luarocks/cmd/purge.lua
index fa4be4d7..2b5873d7 100644
--- a/src/luarocks/cmd/purge.lua
+++ b/src/luarocks/cmd/purge.lua
@@ -42,7 +42,7 @@ function purge.command(args)
    if type(tree) ~= "string" then
       return nil, "The --tree argument is mandatory. "..util.see_help("purge")
    end
-   
+
    local results = {}
    if not fs.is_dir(tree) then
       return nil, "Directory not found: "..tree
diff --git a/src/luarocks/cmd/remove.lua b/src/luarocks/cmd/remove.lua
index 46f3e4a6..17723ec9 100644
--- a/src/luarocks/cmd/remove.lua
+++ b/src/luarocks/cmd/remove.lua
@@ -42,10 +42,10 @@ end
 function cmd_remove.command(args)
    local name = args.rock
    local deps_mode = deps.get_deps_mode(args)
-   
+
    local ok, err = fs.check_command_permissions(args)
    if not ok then return nil, err, cmd.errorcodes.PERMISSIONDENIED end
-   
+
    local rock_type = name:match("%.(rock)$") or name:match("%.(rockspec)$")
    local version = args.version
    local filename = name
diff --git a/src/luarocks/cmd/search.lua b/src/luarocks/cmd/search.lua
index 181fdacc..6cab6d80 100644
--- a/src/luarocks/cmd/search.lua
+++ b/src/luarocks/cmd/search.lua
@@ -63,7 +63,7 @@ function cmd_search.command(args)
    if not args.name and not args.all then
       return nil, "Enter name and version or use --all. "..util.see_help("search")
    end
-   
+
    local query = queries.new(name, args.namespace, args.version, true)
    local result_tree, err = search.search_repos(query)
    local porcelain = args.porcelain
diff --git a/src/luarocks/cmd/show.lua b/src/luarocks/cmd/show.lua
index c1c155e2..d93459fd 100644
--- a/src/luarocks/cmd/show.lua
+++ b/src/luarocks/cmd/show.lua
@@ -100,7 +100,7 @@ local function keys_as_string(t, sep)
    return table.concat(keys, sep or " ")
 end
 
-local function word_wrap(line) 
+local function word_wrap(line)
    local width = tonumber(os.getenv("COLUMNS")) or 80
    if width > 80 then width = 80 end
    if #line > width then
@@ -265,7 +265,7 @@ end
 -- @return boolean: True if succeeded, nil on errors.
 function show.command(args)
    local query = queries.new(args.rock, args.namespace, args.version, true)
-   
+
    local name, version, repo, repo_url = search.pick_installed_rock(query, args.tree)
    if not name then
       return nil, version
diff --git a/src/luarocks/cmd/test.lua b/src/luarocks/cmd/test.lua
index 7a1ffda2..21838c90 100644
--- a/src/luarocks/cmd/test.lua
+++ b/src/luarocks/cmd/test.lua
@@ -33,9 +33,9 @@ function cmd_test.command(args)
    if args.rockspec and args.rockspec:match("rockspec$") then
       return test.run_test_suite(args.rockspec, args.test_type, args.args)
    end
-   
+
    table.insert(args.args, 1, args.rockspec)
-   
+
    local rockspec, err = util.get_default_rockspec()
    if not rockspec then
       return nil, err
diff --git a/src/luarocks/cmd/unpack.lua b/src/luarocks/cmd/unpack.lua
index b9bec4a6..94da2c9f 100644
--- a/src/luarocks/cmd/unpack.lua
+++ b/src/luarocks/cmd/unpack.lua
@@ -32,7 +32,7 @@ end
 -- files specified in the rockspec, and unpack them inside the directory.
 -- @param rockspec_file string: The URL for a rockspec file.
 -- @param dir_name string: The directory where to store and unpack files.
--- @return table or (nil, string): the loaded rockspec table or 
+-- @return table or (nil, string): the loaded rockspec table or
 -- nil and an error message.
 local function unpack_rockspec(rockspec_file, dir_name)
    assert(type(rockspec_file) == "string")
@@ -61,7 +61,7 @@ end
 -- @param dir_name string: The directory where to unpack.
 -- @param kind string: the kind of rock file, as in the second-level
 -- extension in the rock filename (eg. "src", "all", "linux-x86")
--- @return table or (nil, string): the loaded rockspec table or 
+-- @return table or (nil, string): the loaded rockspec table or
 -- nil and an error message.
 local function unpack_rock(rock_file, dir_name, kind)
    assert(type(rock_file) == "string")
@@ -102,7 +102,7 @@ end
 -- by an error message.
 local function run_unpacker(file, force)
    assert(type(file) == "string")
-   
+
    local base_name = dir.base_name(file)
    local dir_name, kind, extension = base_name:match("(.*)%.([^.]+)%.(rock)$")
    if not extension then
@@ -139,7 +139,7 @@ local function run_unpacker(file, force)
             return nil, "Failed copying unpacked rockspec into unpacked source directory."
          end
       end
-      util.printout()   
+      util.printout()
       util.printout("Done. You may now enter directory ")
       util.printout(dir.path(dir_name, rockspec.source.dir))
       util.printout("and type 'luarocks make' to build.")
diff --git a/src/luarocks/cmd/upload.lua b/src/luarocks/cmd/upload.lua
index 6e3877ba..da51b401 100644
--- a/src/luarocks/cmd/upload.lua
+++ b/src/luarocks/cmd/upload.lua
@@ -53,7 +53,7 @@ function upload.command(args)
       version = rockspec.version
    })
    if not res then return nil, err end
-   
+
    if not res.module then
       util.printout("Will create new module (" .. tostring(rockspec.package) .. ")")
    end
@@ -87,7 +87,7 @@ function upload.command(args)
          util.printout("Signed packed rock: "..rock_sigfname)
       end
    end
-   
+
    local multipart = require("luarocks.upload.multipart")
 
    res, err = api:method("upload", nil, {
@@ -95,13 +95,13 @@ function upload.command(args)
      rockspec_sig = sigfname and multipart.new_file(sigfname),
    })
    if not res then return nil, err end
-   
+
    if res.is_new and #res.manifests == 0 then
       util.printerr("Warning: module not added to root manifest due to name taken.")
    end
-   
+
    local module_url = res.module_url
-   
+
    if rock_fname then
       if (not res.version) or (not res.version.id) then
          return nil, "Invalid response from server."
@@ -113,7 +113,7 @@ function upload.command(args)
       })
       if not res then return nil, err end
    end
-   
+
    util.printout()
    util.printout("Done: " .. tostring(module_url))
    util.printout()
diff --git a/src/luarocks/cmd/write_rockspec.lua b/src/luarocks/cmd/write_rockspec.lua
index 5d5404e5..871cdd44 100644
--- a/src/luarocks/cmd/write_rockspec.lua
+++ b/src/luarocks/cmd/write_rockspec.lua
@@ -137,7 +137,7 @@ do
          return url
       end
    end
-   
+
    local function detect_scm_url(directory)
       return detect_url_from_command("git", "config --get remote.origin.url", directory) or
          detect_url_from_command("hg", "paths default", directory)
@@ -230,7 +230,7 @@ local function fill_as_builtin(rockspec, libs)
          libdirs[#libdirs+1] = "$("..upper.."_LIBDIR)"
       end
    end
-   
+
    rockspec.build.modules, rockspec.build.install, rockspec.build.copy_directories = builtin.autodetect_modules(libs, incdirs, libdirs)
 end
 
@@ -302,10 +302,10 @@ function write_rockspec.command(args)
    version = version or "dev"
 
    local filename = args.output or dir.path(fs.current_dir(), name:lower().."-"..version.."-1.rockspec")
-   
+
    local url = detect_url(location)
    local homepage = detect_homepage(url, args.homepage)
-   
+
    local rockspec, err = rockspecs.from_persisted_table(filename, {
       rockspec_format = args.rockspec_format,
       package = name,
@@ -327,11 +327,11 @@ function write_rockspec.command(args)
    })
    assert(not err, err)
    rockspec.source.protocol = protocol
-   
+
    if not next(rockspec.dependencies) then
       util.warning("Please specify supported Lua versions with --lua-versions=<ver>. "..util.see_help("write_rockspec"))
    end
-   
+
    local local_dir = location
 
    if location:match("://") then
@@ -354,11 +354,11 @@ function write_rockspec.command(args)
          local_dir = nil
       end
    end
-   
+
    if not local_dir then
       local_dir = "."
    end
-   
+
    local libs = nil
    if args.lib then
       libs = {}
@@ -391,16 +391,16 @@ function write_rockspec.command(args)
          util.title("Please fill in the source.license field manually or use --license.")
       end
    end
-   
+
    fill_as_builtin(rockspec, libs)
-      
+
    rockspec_cleanup(rockspec)
-   
+
    persist.save_from_table(filename, rockspec, type_rockspec.order)
 
-   util.printout()   
+   util.printout()
    util.printout("Wrote template at "..filename.." -- you should now edit and finish it.")
-   util.printout()   
+   util.printout()
 
    return true
 end
diff --git a/src/luarocks/core/cfg.lua b/src/luarocks/core/cfg.lua
index d65681c1..c19f7d3b 100644
--- a/src/luarocks/core/cfg.lua
+++ b/src/luarocks/core/cfg.lua
@@ -558,7 +558,7 @@ local cfg = {}
 
 --- Initializes the LuaRocks configuration for variables, paths
 -- and OS detection.
--- @param detected table containing information detected about the 
+-- @param detected table containing information detected about the
 -- environment. All fields below are optional:
 -- * lua_version (in x.y format, e.g. "5.3")
 -- * lua_bindir (e.g. "/usr/local/bin")
@@ -575,7 +575,7 @@ function cfg.init(detected, warning)
    if not hc_ok then
       hardcoded = {}
    end
-   
+
    local init = cfg.init
 
    ----------------------------------------
@@ -595,7 +595,7 @@ function cfg.init(detected, warning)
    end
 
    -- Use detected values as defaults, overridable via config files or CLI args
-   
+
    local first_arg = get_first_arg()
 
    cfg.lua_version = detected.lua_version or hardcoded.LUA_VERSION or _VERSION:sub(5)
@@ -778,7 +778,7 @@ function cfg.init(detected, warning)
                     and home_config_file
                     or sys_config_file),
    }
-   
+
    cfg.cache = {}
 
    ----------------------------------------
diff --git a/src/luarocks/core/dir.lua b/src/luarocks/core/dir.lua
index d346ec4f..765a0e58 100644
--- a/src/luarocks/core/dir.lua
+++ b/src/luarocks/core/dir.lua
@@ -6,7 +6,7 @@ local require = nil
 
 local function unquote(c)
    local first, last = c:sub(1,1), c:sub(-1)
-   if (first == '"' and last == '"') or 
+   if (first == '"' and last == '"') or
       (first == "'" and last == "'") then
       return c:sub(2,-2)
    end
@@ -40,7 +40,7 @@ end
 -- @return string, string: the protocol, and the pathname without the protocol.
 function dir.split_url(url)
    assert(type(url) == "string")
-   
+
    url = unquote(url)
    local protocol, pathname = url:match("^([^:]*)://(.*)")
    if not protocol then
diff --git a/src/luarocks/core/manif.lua b/src/luarocks/core/manif.lua
index fe0a95fa..3925f636 100644
--- a/src/luarocks/core/manif.lua
+++ b/src/luarocks/core/manif.lua
@@ -94,7 +94,7 @@ function manif.scan_dependencies(name, version, tree_manifests, dest)
       if pkgdeps then
          for _, dep in ipairs(pkgdeps) do
             local pkg, constraints = dep.name, dep.constraints
-   
+
             for _, t in ipairs(tree_manifests) do
                local entries = t.manifest.repository[pkg]
                if entries then
diff --git a/src/luarocks/core/persist.lua b/src/luarocks/core/persist.lua
index 59089818..57e7b5d4 100644
--- a/src/luarocks/core/persist.lua
+++ b/src/luarocks/core/persist.lua
@@ -66,9 +66,9 @@ function persist.load_into_table(filename, tbl)
    }
    local save_mt = getmetatable(result)
    setmetatable(result, globals_mt)
-   
+
    local ok, err, errcode = persist.run_file(filename, result)
-   
+
    setmetatable(result, save_mt)
 
    if not ok then
diff --git a/src/luarocks/core/sysdetect.lua b/src/luarocks/core/sysdetect.lua
index 534ab89f..7358c29f 100644
--- a/src/luarocks/core/sysdetect.lua
+++ b/src/luarocks/core/sysdetect.lua
@@ -15,7 +15,7 @@ end
 local function read_int8(fd)
    if io.type(fd) == "closed file" then
       return nil
-   end   
+   end
    local s = fd:read(1)
    if not s then
       fd:close()
@@ -44,7 +44,7 @@ end
 local function read(fd, bytes, endian)
    if io.type(fd) == "closed file" then
       return nil
-   end   
+   end
    local s = fd:read(bytes)
    if not s
       then fd:close()
@@ -138,7 +138,7 @@ end
 local function detect_elf_system(fd, hdr, sections)
    local system = e_osabi[hdr.osabi]
    local endian = hdr.endian
-   
+
    if system == "sysv" then
       local abitag = sections[".note.ABI-tag"]
       if abitag then
@@ -154,7 +154,7 @@ local function detect_elf_system(fd, hdr, sections)
       elseif sections[".note.openbsd.ident"] then
          return "openbsd"
       end
-      
+
       local gnu_version_r = sections[".gnu.version_r"]
       if gnu_version_r then
 
@@ -170,7 +170,7 @@ local function detect_elf_system(fd, hdr, sections)
 
             fd:seek("set", dynstr + vn_file)
             local libname = fd:read(64):gsub("%z.*", "")
-            
+
             if hdr.e_type == 0x03 and libname == "libroot.so" then
                return "haiku"
             elseif libname:match("linux") then
@@ -190,7 +190,7 @@ local function detect_elf_system(fd, hdr, sections)
          end
       end
    end
-   
+
    return system
 end
 
@@ -207,7 +207,7 @@ local function read_elf_header(fd)
    if not hdr.osabi then
       return nil
    end
-   
+
    local endian = hdr.endian
    fd:seek("set", 0x10)
    hdr.e_type = read(fd, 2, endian)
@@ -221,10 +221,10 @@ local function read_elf_header(fd)
    if elfversion ~= 1 then
       return nil
    end
-   
+
    local word = (hdr.bits == 1) and 4 or 8
    hdr.word = word
-   
+
    hdr.e_entry = read(fd, word, endian)
    hdr.e_phoff = read(fd, word, endian)
    hdr.e_shoff = read(fd, word, endian)
@@ -235,7 +235,7 @@ local function read_elf_header(fd)
    hdr.e_shentsize = read(fd, 2, endian)
    hdr.e_shnum = read(fd, 2, endian)
    hdr.e_shstrndx = read(fd, 2, endian)
-   
+
    return hdr, processor
 end
 
@@ -323,7 +323,7 @@ local function detect_pe(fd)
    fd:seek("set", peoffset + 4)       -- move to position of Machine section
    local machine = read(fd, 2, LITTLE)
    local processor = pe_machine[machine]
-  
+
    local rdata_pos = fd:read(736):match(".rdata%z%z............(....)")
    if rdata_pos then
       rdata_pos = bytes2number(rdata_pos, LITTLE)
@@ -333,7 +333,7 @@ local function detect_pe(fd)
          system = "cygwin"
       end
    end
-   
+
    return system, processor or "unknown"
 end
 
@@ -363,7 +363,7 @@ local cache_processor
 function sysdetect.detect(input_file)
    local dirsep = package.config:sub(1,1)
    local files
-   
+
    if input_file then
       files = { input_file }
    else
diff --git a/src/luarocks/core/util.lua b/src/luarocks/core/util.lua
index dae8cfab..384a6eba 100644
--- a/src/luarocks/core/util.lua
+++ b/src/luarocks/core/util.lua
@@ -5,7 +5,7 @@ local require = nil
 --------------------------------------------------------------------------------
 
 --- Run a process and read a its output.
--- Equivalent to io.popen(cmd):read("*l"), except that it 
+-- Equivalent to io.popen(cmd):read("*l"), except that it
 -- closes the fd right away.
 -- @param cmd string: The command to execute
 -- @param spec string: "*l" by default, to read a single line.
@@ -63,7 +63,7 @@ function util.show_table(t, tname, top_indent)
    local autoref  -- for self references
 
    local function is_empty_table(tbl) return next(tbl) == nil end
-   
+
    local function basic_serialize(o)
       local so = tostring(o)
       if type(o) == "function" then
@@ -71,7 +71,7 @@ function util.show_table(t, tname, top_indent)
          -- info.name is nil because o is not a calling level
          if info.what == "C" then
             return ("%q"):format(so .. ", C function")
-         else 
+         else
             -- the information is defined through lines
             return ("%q"):format(so .. ", defined in (" .. info.linedefined .. "-" .. info.lastlinedefined .. ")" .. info.source)
          end
@@ -81,14 +81,14 @@ function util.show_table(t, tname, top_indent)
          return ("%q"):format(so)
       end
    end
-   
+
    local function add_to_cart(value, name, indent, saved, field)
       indent = indent or ""
       saved = saved or {}
       field = field or name
-      
+
       cart = cart .. indent .. field
-      
+
       if type(value) ~= "table" then
          cart = cart .. " = " .. basic_serialize(value) .. ";\n"
       else
@@ -113,7 +113,7 @@ function util.show_table(t, tname, top_indent)
          end
       end
    end
-   
+
    tname = tname or "__unnamed__"
    if type(t) ~= "table" then
       return tname .. " = " .. basic_serialize(t)
@@ -189,7 +189,7 @@ function util.cleanup_path(list, sep, lua_version, keep_first)
       local part = parts[i]:gsub("//", "/")
       if lua_version then
          part = part:gsub("/lua/([%d.]+)/", function(part_version)
-            if part_version:sub(1, #lua_version) ~= lua_version then            
+            if part_version:sub(1, #lua_version) ~= lua_version then
                return "/lua/"..lua_version.."/"
             end
          end)
diff --git a/src/luarocks/core/vers.lua b/src/luarocks/core/vers.lua
index e680f70b..e7251bb5 100644
--- a/src/luarocks/core/vers.lua
+++ b/src/luarocks/core/vers.lua
@@ -63,11 +63,11 @@ local version_mt = {
        return not (v2 < v1)
    end,
    --- Return version as a string.
-   -- @param v The version table. 
+   -- @param v The version table.
    -- @return The string representation.
    __tostring = function(v)
       return v.string
-   end,  
+   end,
 }
 
 local version_cache = {}
@@ -102,7 +102,7 @@ function vers.parse_version(vstring)
       version[i] = version[i] and version[i] + number/100000 or number
       i = i + 1
    end
-   
+
    -- trim leading and trailing spaces
    local v = vstring:match("^%s*(.*)%s*$")
    version.string = v
@@ -164,7 +164,7 @@ local function partial_match(version, requested)
    if type(version) ~= "table" then version = vers.parse_version(version) end
    if type(requested) ~= "table" then requested = vers.parse_version(requested) end
    if not version or not requested then return false end
-   
+
    for i, ri in ipairs(requested) do
       local vi = version[i] or 0
       if ri ~= vi then return false end
diff --git a/src/luarocks/deplocks.lua b/src/luarocks/deplocks.lua
index f6449986..d62908f4 100644
--- a/src/luarocks/deplocks.lua
+++ b/src/luarocks/deplocks.lua
@@ -46,10 +46,10 @@ function deplocks.load(root_rock_name, dirname)
       -- could not open, maybe file does not exist
       return true, nil
    end
-   
+
    deplock_abs_filename = fs.absolute_name(filename)
    deplock_root_rock_name = root_rock_name
-   
+
    deptable = result
    return true, filename
 end
@@ -58,7 +58,7 @@ function deplocks.add(depskey, name, version)
    if deptable_mode == "locked" then
       return
    end
-   
+
    local dk = deptable[depskey]
    if not dk then
       dk = {}
@@ -89,7 +89,7 @@ end
 
 -- a table-like interface to deplocks
 function deplocks.proxy(depskey)
-   return setmetatable({}, { 
+   return setmetatable({}, {
       __index = function(_, k)
          return deplocks.get(depskey, k)
       end,
diff --git a/src/luarocks/deps.lua b/src/luarocks/deps.lua
index f6de0db8..7e7b69e6 100644
--- a/src/luarocks/deps.lua
+++ b/src/luarocks/deps.lua
@@ -47,7 +47,7 @@ local function prepare_get_versions(deps_mode, rocks_provided, depskey, blacklis
          end
          versions, locations = manif.get_versions(dep, deps_mode)
       end
-      
+
       if blacklist and blacklist[dep.name] then
          local orig_versions = versions
          versions = {}
@@ -57,9 +57,9 @@ local function prepare_get_versions(deps_mode, rocks_provided, depskey, blacklis
             end
          end
       end
-      
+
       local lockversion = deplocks.get(depskey, dep.name)
-   
+
       return versions, locations, lockversion, provided ~= nil
    end
 end
@@ -81,9 +81,9 @@ end
 local function match_dep(dep, get_versions)
    assert(type(dep) == "table")
    assert(type(get_versions) == "function")
-   
+
    local versions, locations, lockversion, provided = get_versions(dep)
-   
+
    local latest_version
    local latest_vstring
    for _, vstring in ipairs(versions) do
@@ -95,7 +95,7 @@ local function match_dep(dep, get_versions)
          end
       end
    end
-   
+
    if lockversion and not locations[lockversion] then
       local latest_matching_msg = ""
       if latest_vstring and latest_vstring ~= lockversion then
@@ -104,7 +104,7 @@ local function match_dep(dep, get_versions)
       util.printout("Forcing " .. dep.name .. " to pinned version " .. lockversion .. latest_matching_msg)
       return nil, nil, queries.new(dep.name, dep.namespace, lockversion)
    end
-   
+
    return latest_vstring, locations[latest_vstring], dep, provided
 end
 
@@ -113,7 +113,7 @@ local function match_all_deps(dependencies, get_versions)
    assert(type(get_versions) == "function")
 
    local matched, missing, no_upgrade = {}, {}, {}
-   
+
    for _, dep in ipairs(dependencies) do
       local found, _, provided
       found, _, dep, provided = match_dep(dep, get_versions)
@@ -169,7 +169,7 @@ end
 -- @param version string: package version.
 -- @param dependencies table: array of dependencies.
 -- @param deps_mode string: Which trees to check dependencies for
--- @param rocks_provided table: A table of auto-dependencies provided 
+-- @param rocks_provided table: A table of auto-dependencies provided
 -- by this Lua implementation for the given dependency.
 -- "one" for the current default tree, "all" for all trees,
 -- "order" for all trees with priority >= the current default, "none" for no trees.
@@ -179,7 +179,7 @@ function deps.report_missing_dependencies(name, version, dependencies, deps_mode
    assert(type(dependencies) == "table")
    assert(type(deps_mode) == "string")
    assert(type(rocks_provided) == "table")
-   
+
    if deps_mode == "none" then
       return
    end
@@ -270,7 +270,7 @@ local function check_supported_platforms(rockspec)
          return nil, "This rockspec for "..rockspec.package.." does not support "..plats.." platforms."
       end
    end
-   
+
    return true
 end
 
@@ -295,7 +295,7 @@ function deps.fulfill_dependencies(rockspec, depskey, deps_mode, verify, deplock
    local name = rockspec.name
    local version = rockspec.version
    local rocks_provided = rockspec.rocks_provided
-      
+
    local ok, filename, err = deplocks.load(name, deplock_dir or ".")
    if filename then
       util.printout("Using dependencies pinned in lockfile: " .. filename)
@@ -530,7 +530,7 @@ local function check_external_dependency(name, ext_files, vars, mode, cache)
    local err_files = {program = {}, header = {}, library = {}}
 
    local dirs = get_external_deps_dirs(mode)
-   
+
    local prefixes
    if vars[name .. "_DIR"] then
       prefixes = { vars[name .. "_DIR"] }
@@ -539,7 +539,7 @@ local function check_external_dependency(name, ext_files, vars, mode, cache)
    else
       prefixes = cfg.external_deps_dirs
    end
-   
+
    for _, prefix in ipairs(prefixes) do
       prefix = resolve_prefix(prefix, dirs)
       if cfg.is_platform("mingw32") and name == "LUA" then
@@ -556,7 +556,7 @@ local function check_external_dependency(name, ext_files, vars, mode, cache)
          return true
       end
    end
-   
+
    return nil, err_dirname, err_testfile, err_files
 end
 
@@ -575,7 +575,7 @@ end
 -- nil and an error message if any test failed.
 function deps.check_external_deps(rockspec, mode)
    assert(rockspec:type() == "rockspec")
-   
+
    if not rockspec.external_dependencies then
       rockspec.external_dependencies = builtin.autodetect_external_dependencies(rockspec.build)
    end
@@ -587,7 +587,7 @@ function deps.check_external_deps(rockspec, mode)
       local ok, err_dirname, err_testfile, err_files = check_external_dependency(name, ext_files, rockspec.variables, mode)
       if not ok then
          local lines = {"Could not find "..err_testfile.." file for "..name}
-      
+
          local err_paths = {}
          for _, err_file in ipairs(err_files[err_testfile]) do
             if not err_paths[err_file] then
@@ -595,10 +595,10 @@ function deps.check_external_deps(rockspec, mode)
                table.insert(lines, "  No file "..err_file)
             end
          end
-      
+
          table.insert(lines, "You may have to install "..name.." in your system and/or pass "..name.."_DIR or "..name.."_"..err_dirname.." to the luarocks command.")
          table.insert(lines, "Example: luarocks install "..rockspec.name.." "..name.."_DIR=/usr/local")
-      
+
          return nil, table.concat(lines, "\n"), "dependency"
       end
    end
@@ -700,7 +700,7 @@ function deps.check_lua_incdir(vars)
    if vars.LUA_INCDIR then
       return lua_h_exists(vars.LUA_INCDIR, cfg.lua_version)
    end
-   
+
    if vars.LUA_DIR then
       vars.LUA_INCDIR = find_lua_incdir(vars.LUA_DIR, cfg.lua_version, ljv)
       if vars.LUA_INCDIR then
diff --git a/src/luarocks/fetch.lua b/src/luarocks/fetch.lua
index da912d3e..c8b15d61 100644
--- a/src/luarocks/fetch.lua
+++ b/src/luarocks/fetch.lua
@@ -175,7 +175,7 @@ local function fetch_and_verify_signature_for(url, filename, tmpdir)
    if not sig_file then
       return nil, "Could not fetch signature file for verification: " .. err, errcode
    end
-   
+
    local ok, err = signing.verify_signature(filename, sig_file)
    if not ok then
       return nil, "Failed signature verification: " .. err
@@ -269,7 +269,7 @@ function fetch.load_local_rockspec(rel_filename, quick)
    if not tbl then
       return nil, "Could not load rockspec file "..abs_filename.." ("..err..")"
    end
-   
+
    local rockspec, err = rockspecs.from_persisted_table(abs_filename, tbl, err, quick)
    if not rockspec then
       return nil, abs_filename .. ": " .. err
@@ -279,12 +279,12 @@ function fetch.load_local_rockspec(rel_filename, quick)
    if basename ~= "rockspec" and basename ~= name_version .. ".rockspec" then
       return nil, "Inconsistency between rockspec filename ("..basename..") and its contents ("..name_version..".rockspec)."
    end
-   
+
    return rockspec
 end
 
 --- Load a local or remote rockspec into a table.
--- This is the entry point for the LuaRocks tools. 
+-- This is the entry point for the LuaRocks tools.
 -- Only the LuaRocks runtime loader should use
 -- load_local_rockspec directly.
 -- @param filename string: Local or remote filename of a rockspec.
@@ -425,7 +425,7 @@ function fetch.fetch_sources(rockspec, extract, dest_dir)
          return nil, "Unknown protocol "..protocol
       end
    end
-   
+
    if cfg.only_sources_from
    and rockspec.source.pathname
    and #rockspec.source.pathname > 0 then
diff --git a/src/luarocks/fetch/git.lua b/src/luarocks/fetch/git.lua
index 88ba4848..29892e92 100644
--- a/src/luarocks/fetch/git.lua
+++ b/src/luarocks/fetch/git.lua
@@ -150,7 +150,7 @@ function git.get_sources(rockspec, extract, dest_dir, depth)
          return nil, 'Failed to fetch submodules.'
       end
    end
-   
+
    if not rockspec.source.tag then
       rockspec.source.identifier = git_identifier(git_cmd, rockspec.version)
    end
diff --git a/src/luarocks/fs/lua.lua b/src/luarocks/fs/lua.lua
index 83ffbd47..0e98449a 100644
--- a/src/luarocks/fs/lua.lua
+++ b/src/luarocks/fs/lua.lua
@@ -132,7 +132,7 @@ function fs_lua.is_tool_available(tool_cmd, tool_name, arg)
 
    if ok then
       return true
-   else   
+   else
       local msg = "'%s' program not found. Make sure %s is installed and is available in your PATH " ..
                   "(or you may want to edit the 'variables.%s' value in file '%s')"
       return nil, msg:format(tool_cmd, tool_name, tool_name:upper(), cfg.config_files.nearest)
@@ -535,7 +535,7 @@ end
 --- Internal implementation function for fs.dir.
 -- Yields a filename on each iteration.
 -- @param at string: directory to list
--- @return nil or (nil and string): an error message on failure 
+-- @return nil or (nil and string): an error message on failure
 function fs_lua.dir_iterator(at)
    local pok, iter, arg = pcall(lfs.dir, at)
    if not pok then
@@ -707,7 +707,7 @@ local redirect_protocols = {
 
 local function request(url, method, http, loop_control)  -- luacheck: ignore 431
    local result = {}
-   
+
    if cfg.verbose then
       print(method, url)
    end
diff --git a/src/luarocks/fs/tools.lua b/src/luarocks/fs/tools.lua
index fdb93dba..4fe8e104 100644
--- a/src/luarocks/fs/tools.lua
+++ b/src/luarocks/fs/tools.lua
@@ -12,7 +12,7 @@ local dir_stack = {}
 
 do
    local tool_cache = {}
-   
+
    local tool_options = {
       downloader = {
          desc = "downloader",
@@ -147,7 +147,7 @@ function tools.use_downloader(url, filename, cache)
    assert(type(filename) == "string" or not filename)
 
    filename = fs.absolute_name(filename or dir.base_name(url))
-   
+
    local downloader, err = fs.which_tool("downloader")
    if not downloader then
       return nil, err
diff --git a/src/luarocks/fs/unix.lua b/src/luarocks/fs/unix.lua
index 53903f0c..d5b36127 100644
--- a/src/luarocks/fs/unix.lua
+++ b/src/luarocks/fs/unix.lua
@@ -76,7 +76,7 @@ function unix.wrap_script(script, target, deps_mode, name, version, ...)
    assert(type(deps_mode) == "string")
    assert(type(name) == "string" or not name)
    assert(type(version) == "string" or not version)
-   
+
    local wrapper = io.open(target, "w")
    if not wrapper then
       return nil, "Could not open "..target.." for writing."
@@ -153,7 +153,7 @@ function unix.is_actual_binary(filename)
    return first ~= "#!"
 end
 
-function unix.copy_binary(filename, dest) 
+function unix.copy_binary(filename, dest)
    return fs.copy(filename, dest, "exec")
 end
 
diff --git a/src/luarocks/fs/unix/tools.lua b/src/luarocks/fs/unix/tools.lua
index 959ee86e..d36d407d 100644
--- a/src/luarocks/fs/unix/tools.lua
+++ b/src/luarocks/fs/unix/tools.lua
@@ -51,7 +51,7 @@ end
 --- Copy a file.
 -- @param src string: Pathname of source
 -- @param dest string: Pathname of destination
--- @param perm string ("read" or "exec") or nil: Permissions for destination 
+-- @param perm string ("read" or "exec") or nil: Permissions for destination
 -- file or nil to use the source permissions
 -- @return boolean or (boolean, string): true on success, false on failure,
 -- plus an error message.
diff --git a/src/luarocks/fs/win32.lua b/src/luarocks/fs/win32.lua
index 00dd0163..49de8e97 100644
--- a/src/luarocks/fs/win32.lua
+++ b/src/luarocks/fs/win32.lua
@@ -217,7 +217,7 @@ function win32.is_actual_binary(name)
    return false
 end
 
-function win32.copy_binary(filename, dest) 
+function win32.copy_binary(filename, dest)
    local ok, err = fs.copy(filename, dest)
    if not ok then
       return nil, err
diff --git a/src/luarocks/manif.lua b/src/luarocks/manif.lua
index b9eadc5b..f643bc80 100644
--- a/src/luarocks/manif.lua
+++ b/src/luarocks/manif.lua
@@ -110,7 +110,7 @@ function manif.load_manifest(repo_url, lua_version, versioned_only)
             break
          end
       end
-      if not pathname then 
+      if not pathname then
          return nil, err, errcode
       end
    end
@@ -236,7 +236,7 @@ end
 function manif.get_versions(dep, deps_mode)
    assert(type(dep) == "table")
    assert(type(deps_mode) == "string")
-   
+
    local name = dep.name
    local namespace = dep.namespace
 
diff --git a/src/luarocks/manif/writer.lua b/src/luarocks/manif/writer.lua
index fd891844..a435d29e 100644
--- a/src/luarocks/manif/writer.lua
+++ b/src/luarocks/manif/writer.lua
@@ -90,7 +90,7 @@ end
 local function update_dependencies(manifest, deps_mode)
    assert(type(manifest) == "table")
    assert(type(deps_mode) == "string")
-   
+
    for pkg, versions in pairs(manifest.repository) do
       for version, repositories in pairs(versions) do
          for _, repo in ipairs(repositories) do
@@ -160,7 +160,7 @@ local function filter_by_lua_version(manifest, lua_version, repodir, cache)
    assert(type(manifest) == "table")
    assert(type(repodir) == "string")
    assert((not cache) or type(cache) == "table")
-   
+
    cache = cache or {}
    lua_version = vers.parse_version(lua_version)
    for pkg, versions in pairs(manifest.repository) do
@@ -176,7 +176,7 @@ local function filter_by_lua_version(manifest, lua_version, repodir, cache)
                if rockspec then
                   cache[pathname] = rockspec
                   for _, dep in ipairs(rockspec.dependencies) do
-                     if dep.name == "lua" then 
+                     if dep.name == "lua" then
                         if not vers.match_constraints(lua_version, dep.constraints) then
                            table.insert(to_remove, version)
                         end
diff --git a/src/luarocks/pack.lua b/src/luarocks/pack.lua
index 983aef74..34268475 100644
--- a/src/luarocks/pack.lua
+++ b/src/luarocks/pack.lua
@@ -91,13 +91,13 @@ function pack.pack_installed_rock(query, tree)
    if not fs.exists(prefix) then
       return nil, "'"..name.." "..version.."' does not seem to be an installed rock."
    end
-   
+
    local rock_manifest, err = manif.load_rock_manifest(name, version, root)
    if not rock_manifest then return nil, err end
 
    local name_version = name .. "-" .. version
    local rock_file = fs.absolute_name(name_version .. "."..cfg.arch..".rock")
-   
+
    local temp_dir = fs.make_temp_dir("pack")
    fs.copy_contents(prefix, temp_dir)
 
@@ -111,7 +111,7 @@ function pack.pack_installed_rock(query, tree)
       local ok, err = copy_back_files(name, version, rock_manifest.lua, path.deploy_lua_dir(repo), dir.path(temp_dir, "lua"), "read")
       if not ok then return nil, "Failed copying back files: " .. err end
    end
-   
+
    local ok, err = fs.change_dir(temp_dir)
    if not ok then return nil, err end
    if not is_binary and not repos.has_binaries(name, version) then
diff --git a/src/luarocks/path.lua b/src/luarocks/path.lua
index b3b01704..a9f04ef0 100644
--- a/src/luarocks/path.lua
+++ b/src/luarocks/path.lua
@@ -49,7 +49,7 @@ function path.manifest_file(tree)
 end
 
 --- Get the directory for all versions of a package in a tree.
--- @param name string: The package name. 
+-- @param name string: The package name.
 -- @return string: The resulting path -- does not guarantee that
 -- @param tree string or nil: If given, specifies the local tree to use.
 -- the package (and by extension, the path) exists.
@@ -59,7 +59,7 @@ function path.versions_dir(name, tree)
 end
 
 --- Get the local installation directory (prefix) for a package.
--- @param name string: The package name. 
+-- @param name string: The package name.
 -- @param version string: The package version.
 -- @param tree string or nil: If given, specifies the local tree to use.
 -- @return string: The resulting path -- does not guarantee that
@@ -71,7 +71,7 @@ function path.install_dir(name, version, tree)
 end
 
 --- Get the local filename of the rockspec of an installed rock.
--- @param name string: The package name. 
+-- @param name string: The package name.
 -- @param version string: The package version.
 -- @param tree string or nil: If given, specifies the local tree to use.
 -- @return string: The resulting path -- does not guarantee that
@@ -83,7 +83,7 @@ function path.rockspec_file(name, version, tree)
 end
 
 --- Get the local filename of the rock_manifest file of an installed rock.
--- @param name string: The package name. 
+-- @param name string: The package name.
 -- @param version string: The package version.
 -- @param tree string or nil: If given, specifies the local tree to use.
 -- @return string: The resulting path -- does not guarantee that
@@ -107,7 +107,7 @@ function path.rock_namespace_file(name, version, tree)
 end
 
 --- Get the local installation directory for C libraries of a package.
--- @param name string: The package name. 
+-- @param name string: The package name.
 -- @param version string: The package version.
 -- @param tree string or nil: If given, specifies the local tree to use.
 -- @return string: The resulting path -- does not guarantee that
@@ -119,7 +119,7 @@ function path.lib_dir(name, version, tree)
 end
 
 --- Get the local installation directory for Lua modules of a package.
--- @param name string: The package name. 
+-- @param name string: The package name.
 -- @param version string: The package version.
 -- @param tree string or nil: If given, specifies the local tree to use.
 -- @return string: The resulting path -- does not guarantee that
@@ -131,7 +131,7 @@ function path.lua_dir(name, version, tree)
 end
 
 --- Get the local installation directory for documentation of a package.
--- @param name string: The package name. 
+-- @param name string: The package name.
 -- @param version string: The package version.
 -- @param tree string or nil: If given, specifies the local tree to use.
 -- @return string: The resulting path -- does not guarantee that
@@ -143,7 +143,7 @@ function path.doc_dir(name, version, tree)
 end
 
 --- Get the local installation directory for configuration files of a package.
--- @param name string: The package name. 
+-- @param name string: The package name.
 -- @param version string: The package version.
 -- @param tree string or nil: If given, specifies the local tree to use.
 -- @return string: The resulting path -- does not guarantee that
@@ -156,7 +156,7 @@ end
 
 --- Get the local installation directory for command-line scripts
 -- of a package.
--- @param name string: The package name. 
+-- @param name string: The package name.
 -- @param version string: The package version.
 -- @param tree string or nil: If given, specifies the local tree to use.
 -- @return string: The resulting path -- does not guarantee that
diff --git a/src/luarocks/persist.lua b/src/luarocks/persist.lua
index b21323ce..02c5016c 100644
--- a/src/luarocks/persist.lua
+++ b/src/luarocks/persist.lua
@@ -85,7 +85,7 @@ local function write_table_key_assignment(out, k, level)
       persist.write_value(out, k, level)
       out:write("]")
    end
-   
+
    out:write(" = ")
 end
 
diff --git a/src/luarocks/queries.lua b/src/luarocks/queries.lua
index de5c9652..6df61296 100644
--- a/src/luarocks/queries.lua
+++ b/src/luarocks/queries.lua
@@ -55,7 +55,7 @@ function queries.new(name, namespace, version, substring, arch, operator)
    assert(type(substring) == "boolean" or not substring)
    assert(type(arch) == "string" or not arch)
    assert(type(operator) == "string" or not operator)
-   
+
    operator = operator or "=="
 
    local self = {
@@ -99,7 +99,7 @@ do
             ["="] = "==",
             ["!="] = "~="
          }
-         
+
          --- Consumes a constraint from a string, converting it to table format.
          -- For example, a string ">= 1.0, > 2.0" is converted to a table in the
          -- format {op = ">=", version={1,0}} and the rest, "> 2.0", is returned
@@ -110,20 +110,20 @@ do
          -- input string is invalid.
          parse_constraint = function(input)
             assert(type(input) == "string")
-         
+
             local no_upgrade, op, version, rest = input:match("^(@?)([<>=~!]*)%s*([%w%.%_%-]+)[%s,]*(.*)")
             local _op = operators[op]
             version = vers.parse_version(version)
             if not _op then
                return nil, "Encountered bad constraint operator: '"..tostring(op).."' in '"..input.."'"
             end
-            if not version then 
+            if not version then
                return nil, "Could not parse version from constraint: '"..input.."'"
             end
             return { op = _op, version = version, no_upgrade = no_upgrade=="@" and true or nil }, rest
          end
       end
-      
+
       --- Convert a list of constraints from string to table format.
       -- For example, a string ">= 1.0, < 2.0" is converted to a table in the format
       -- {{op = ">=", version={1,0}}, {op = "<", version={2,0}}}.
@@ -134,7 +134,7 @@ do
       -- or nil if the input string is invalid.
       parse_constraints = function(input)
          assert(type(input) == "string")
-      
+
          local constraints, oinput, constraint = {}, input
          while #input > 0 do
             constraint, input = parse_constraint(input)
@@ -147,26 +147,26 @@ do
          return constraints
       end
    end
-   
+
    --- Prepare a query in dependency table format.
    -- @param depstr string: A dependency in string format
    -- as entered in rockspec files.
    -- @return table: A query in table format, or nil and an error message in case of errors.
    function queries.from_dep_string(depstr)
       assert(type(depstr) == "string")
-   
+
       local ns_name, rest = depstr:match("^%s*([a-zA-Z0-9%.%-%_]*/?[a-zA-Z0-9][a-zA-Z0-9%.%-%_]*)%s*([^/]*)")
       if not ns_name then
          return nil, "failed to extract dependency name from '"..depstr.."'"
       end
-   
+
       local constraints, err = parse_constraints(rest)
       if not constraints then
          return nil, err
       end
-   
+
       local name, namespace = util.split_namespace(ns_name)
-   
+
       local self = {
          name = name,
          namespace = namespace,
diff --git a/src/luarocks/remove.lua b/src/luarocks/remove.lua
index aabd716f..9f816c7e 100644
--- a/src/luarocks/remove.lua
+++ b/src/luarocks/remove.lua
@@ -47,14 +47,14 @@ end
 -- "one" for the current default tree, "all" for all trees,
 -- "order" for all trees with priority >= the current default, "none" for no trees.
 -- @return boolean or (nil, string): true on success or nil and an error message.
-local function delete_versions(name, versions, deps_mode) 
+local function delete_versions(name, versions, deps_mode)
 
    for version, _ in pairs(versions) do
       util.printout("Removing "..name.." "..version.."...")
       local ok, err = repos.delete_version(name, version, deps_mode)
       if not ok then return nil, err end
    end
-   
+
    return true
 end
 
@@ -63,7 +63,7 @@ function remove.remove_search_results(results, name, deps_mode, force, fast)
 
    local version = next(versions)
    local second = next(versions, version)
-   
+
    local dependents = {}
    if not fast then
       util.printout("Checking stability of dependencies in the absence of")
@@ -71,7 +71,7 @@ function remove.remove_search_results(results, name, deps_mode, force, fast)
       util.printout()
       dependents = check_dependents(name, versions, deps_mode)
    end
-   
+
    if #dependents > 0 then
       if force or fast then
          util.printerr("The following packages may be broken by this forced removal:")
@@ -95,7 +95,7 @@ function remove.remove_search_results(results, name, deps_mode, force, fast)
          return nil, "Failed removing."
       end
    end
-   
+
    local ok, err = delete_versions(name, versions, deps_mode)
    if not ok then return nil, err end
 
diff --git a/src/luarocks/repos.lua b/src/luarocks/repos.lua
index 4a78dfb2..4610c734 100644
--- a/src/luarocks/repos.lua
+++ b/src/luarocks/repos.lua
@@ -47,7 +47,7 @@ end
 -- versions of a package, or nil if none is available.
 local function get_installed_versions(name)
    assert(type(name) == "string" and not name:match("/"))
-   
+
    local dirs = fs.list_dir(path.versions_dir(name))
    return (dirs and #dirs > 0) and dirs or nil
 end
@@ -61,7 +61,7 @@ end
 function repos.is_installed(name, version)
    assert(type(name) == "string" and not name:match("/"))
    assert(type(version) == "string")
-      
+
    return fs.is_dir(path.install_dir(name, version))
 end
 
@@ -172,11 +172,11 @@ function repos.run_hook(rockspec, hook_name)
    if not hooks then
       return true
    end
-   
+
    if cfg.hooks_enabled == false then
       return nil, "This rockspec contains hooks, which are blocked by the 'hooks_enabled' setting in your LuaRocks configuration."
    end
-   
+
    if not hooks.substituted_variables then
       util.variable_substitutions(hooks, rockspec.variables)
       hooks.substituted_variables = true
@@ -269,7 +269,7 @@ local function backup_existing(should_backup, target)
       repeat
          backup = backup.."~"
       until not fs.exists(backup) -- Slight race condition here, but shouldn't be a problem.
-   
+
       util.warning(target.." is not tracked by this installation of LuaRocks. Moving it to "..backup)
       local move_ok, move_err = os.rename(target, backup)
       if not move_ok then
@@ -300,7 +300,7 @@ local function prepare_op_install()
       if not ok then
          return nil, err
       end
-   
+
       local backup, err = backup_existing(op.backup, op.realdst or op.dst)
       if err then
          return nil, err
@@ -308,22 +308,22 @@ local function prepare_op_install()
       if backup then
          op.backup_file = backup
       end
-   
+
       ok, err = op.fn(op.src, op.dst, op.backup)
       if not ok then
          return nil, err
       end
-   
+
       rmdirs[dir.dir_name(op.src)] = true
       return true
    end
-   
+
    local function done_op_install()
       for d, _ in pairs(rmdirs) do
          fs.remove_dir_tree_if_empty(d)
       end
    end
-   
+
    return op_install, done_op_install
 end
 
@@ -361,7 +361,7 @@ end
 local function prepare_op_delete()
    local deletes = {}
    local rmdirs = {}
-   
+
    local function done_op_delete()
       for _, f in ipairs(deletes) do
          os.remove(f)
@@ -377,12 +377,12 @@ local function prepare_op_delete()
          local suffix = check_suffix(op.name, op.suffix)
          op.name = op.name .. suffix
       end
-   
+
       table.insert(deletes, op.name)
-      
+
       rmdirs[dir.dir_name(op.name)] = true
    end
-   
+
    return op_delete, done_op_delete
 end
 
@@ -406,7 +406,7 @@ function repos.deploy_files(name, version, wrap_bin_scripts, deps_mode)
 
    local rock_manifest, load_err = manif.load_rock_manifest(name, version)
    if not rock_manifest then return nil, load_err end
-   
+
    local repo = cfg.root_dir
    local renames = {}
    local installs = {}
@@ -592,7 +592,7 @@ function repos.delete_version(name, version, deps_mode, quick)
       op_delete(op)
    end
    done_op_delete()
-   
+
    if not quick then
       for _, op in ipairs(renames) do
          op_rename(op)
diff --git a/src/luarocks/results.lua b/src/luarocks/results.lua
index a6ebfbf3..c14862de 100644
--- a/src/luarocks/results.lua
+++ b/src/luarocks/results.lua
@@ -17,11 +17,11 @@ function results.new(name, version, repo, arch, namespace)
    assert(type(repo) == "string")
    assert(type(arch) == "string" or not arch)
    assert(type(namespace) == "string" or not namespace)
-   
+
    if not namespace then
       name, namespace = util.split_namespace(name)
    end
-   
+
    local self = {
       name = name,
       version = version,
diff --git a/src/luarocks/rockspecs.lua b/src/luarocks/rockspecs.lua
index f1bb6d6a..94462951 100644
--- a/src/luarocks/rockspecs.lua
+++ b/src/luarocks/rockspecs.lua
@@ -1,5 +1,5 @@
 local rockspecs = {}
-   
+
 local cfg = require("luarocks.core.cfg")
 local dir = require("luarocks.dir")
 local path = require("luarocks.path")
@@ -31,9 +31,9 @@ end
 -- if it doesn't (or if nil is passed), this function does nothing.
 local function platform_overrides(tbl)
    assert(type(tbl) == "table" or not tbl)
-   
+
    if not tbl then return end
-   
+
    if tbl.platforms then
       for platform in cfg.each_platform() do
          local platform_tbl = tbl.platforms[platform]
@@ -158,4 +158,4 @@ function rockspecs.from_persisted_table(filename, rockspec, globals, quick)
    return setmetatable(rockspec, rockspec_mt)
 end
 
-return rockspecs
\ No newline at end of file
+return rockspecs
diff --git a/src/luarocks/search.lua b/src/luarocks/search.lua
index d2bad630..8a79d990 100644
--- a/src/luarocks/search.lua
+++ b/src/luarocks/search.lua
@@ -61,13 +61,13 @@ function search.disk_search(repo, query, result_tree)
    assert(type(repo) == "string")
    assert(query:type() == "query")
    assert(type(result_tree) == "table" or not result_tree)
-   
+
    local fs = require("luarocks.fs")
-     
+
    if not result_tree then
       result_tree = {}
    end
-   
+
    for name in fs.dir(repo) do
       local pathname = dir.path(repo, name)
       local rname, rversion, rarch = path.parse_name(name)
@@ -231,13 +231,13 @@ function search.find_suitable_rock(query)
    assert(query:type() == "query")
 
    local rocks_provided = util.get_rocks_provided()
-   
+
    if rocks_provided[query.name] ~= nil then
       -- Do not install versions listed in rocks_provided.
       return nil, "Rock "..query.name.." "..rocks_provided[query.name]..
          " is already provided by VM or via 'rocks_provided' in the config file.", "provided"
    end
-   
+
    local result_tree = search.search_repos(query)
    local first_rock = next(result_tree)
    if not first_rock then
@@ -270,19 +270,19 @@ function search.find_rock_checking_lua_versions(query, check_lua_versions)
       if check_lua_versions then
          util.printout(query.name .. " not found for Lua " .. cfg.lua_version .. ".")
          util.printout("Checking if available for other Lua versions...")
-      
+
          -- Check if constraints are satisfiable with other Lua versions.
          local lua_versions = supported_lua_versions(query)
-      
+
          if #lua_versions ~= 0 then
             -- Build a nice message in "only Lua 5.x and 5.y but not 5.z." format
             for i, lua_version in ipairs(lua_versions) do
                lua_versions[i] = "Lua "..lua_version
             end
-      
+
             local versions_message = "only "..table.concat(lua_versions, " and ")..
                " but not Lua "..cfg.lua_version.."."
-      
+
             if #query.constraints == 0 then
                add = query.name.." supports "..versions_message
             elseif #query.constraints == 1 and query.constraints[1].op == "==" then
@@ -308,7 +308,7 @@ end
 function search.print_result_tree(result_tree, porcelain)
    assert(type(result_tree) == "table")
    assert(type(porcelain) == "boolean" or not porcelain)
-   
+
    if porcelain then
       for package, versions in util.sortedpairs(result_tree) do
          for version, repos in util.sortedpairs(versions, vers.compare_versions) do
@@ -320,7 +320,7 @@ function search.print_result_tree(result_tree, porcelain)
       end
       return
    end
-   
+
    for package, versions in util.sortedpairs(result_tree) do
       local namespaces = {}
       for version, repos in util.sortedpairs(versions, vers.compare_versions) do
diff --git a/src/luarocks/signing.lua b/src/luarocks/signing.lua
index 2e61041e..cb91643a 100644
--- a/src/luarocks/signing.lua
+++ b/src/luarocks/signing.lua
@@ -22,7 +22,7 @@ function signing.sign_file(file)
    if not gpg then
       return nil, err
    end
-   
+
    local sigfile = file .. ".asc"
    if fs.execute(gpg, "--armor", "--output", sigfile, "--detach-sign", file) then
       return sigfile
diff --git a/src/luarocks/test.lua b/src/luarocks/test.lua
index c550c5b8..15eca234 100644
--- a/src/luarocks/test.lua
+++ b/src/luarocks/test.lua
@@ -22,13 +22,13 @@ local function get_test_type(rockspec)
    if rockspec.test and rockspec.test.type then
       return rockspec.test.type
    end
-   
+
    for _, test_module in ipairs(test_modules) do
       if test_module.detect_type() then
          return test_modules[test_module]
       end
    end
-   
+
    return nil, "could not detect test type -- no test suite for " .. rockspec.package .. "?"
 end
 
@@ -45,7 +45,7 @@ function test.run_test_suite(rockspec_arg, test_type, args)
       assert(type(rockspec_arg) == "table")
       rockspec = rockspec_arg
    end
-   
+
    if not test_type then
       local err
       test_type, err = get_test_type(rockspec, test_type)
@@ -67,7 +67,7 @@ function test.run_test_suite(rockspec_arg, test_type, args)
    if not pok then
       return nil, "failed loading test execution module " .. mod_name
    end
-   
+
    return test_mod.run_tests(rockspec.test, args)
 end
 
diff --git a/src/luarocks/test/command.lua b/src/luarocks/test/command.lua
index 999cc325..1795c4e9 100644
--- a/src/luarocks/test/command.lua
+++ b/src/luarocks/test/command.lua
@@ -20,7 +20,7 @@ function command.run_tests(test, args)
          script = "test.lua"
       }
    end
-   
+
    if not test.script and not test.command then
       test.script = "test.lua"
    end
@@ -31,7 +31,7 @@ function command.run_tests(test, args)
          table.insert(args, i, test.flags[i])
       end
    end
-   
+
    local ok
 
    if test.script then
diff --git a/src/luarocks/tools/patch.lua b/src/luarocks/tools/patch.lua
index 829df931..b12f38fc 100644
--- a/src/luarocks/tools/patch.lua
+++ b/src/luarocks/tools/patch.lua
@@ -114,7 +114,7 @@ local function file_lines(f)
     pos_beg = pos + 1
     if #line > 0 then
       return line
-    end    
+    end
   end
 end
 
@@ -526,7 +526,7 @@ local function patch_hunks(srcname, tgtname, hunks)
   tgt:close()
   src:close()
   return true
-end 
+end
 
 local function strip_dirs(filename, strip)
   if strip == nil then return filename end
@@ -616,7 +616,7 @@ local function patch_file(source, target, epoch, hunks, strip, create_delete)
         end
       end
       hunklineno = 1
-  
+
       -- todo \ No newline at end of file
     end
     -- check hunks in source file
diff --git a/src/luarocks/tools/tar.lua b/src/luarocks/tools/tar.lua
index a6a95252..aea2809c 100644
--- a/src/luarocks/tools/tar.lua
+++ b/src/luarocks/tools/tar.lua
@@ -30,7 +30,7 @@ local function octal_to_number(octal)
    local number = 0
    octal = octal:gsub("%s", "")
    for i = #octal,1,-1 do
-      local digit = tonumber(octal:sub(i,i)) 
+      local digit = tonumber(octal:sub(i,i))
       if not digit then
          break
       end
@@ -93,7 +93,7 @@ function tar.untar(filename, destdir)
 
    local tar_handle = io.open(filename, "rb")
    if not tar_handle then return nil, "Error opening file "..filename end
-   
+
    local long_name, long_link_name
    local ok, err
    local make_dir = fun.memoize(fs.make_dir)
diff --git a/src/luarocks/tools/zip.lua b/src/luarocks/tools/zip.lua
index 37091185..7803b509 100644
--- a/src/luarocks/tools/zip.lua
+++ b/src/luarocks/tools/zip.lua
@@ -129,7 +129,7 @@ end
 -- @return true if succeeded, nil in case of failure.
 local function zipwriter_close_file_in_zip(self)
    local zh = self.ziphandle
-   
+
    if not self.in_open_file then
       return nil
    end
@@ -152,16 +152,16 @@ local function zipwriter_close_file_in_zip(self)
 
    -- File data
    zh:write(self.data)
-   
+
    -- Data descriptor
    zh:write(DATA_DESCRIPTOR_SIGNATURE)
    zh:write(number_to_lestring(lfh.crc32, 4))
    zh:write(number_to_lestring(lfh.compressed_size, 4))
    zh:write(number_to_lestring(lfh.uncompressed_size, 4))
-   
+
    table.insert(self.files, lfh)
    self.in_open_file = false
-   
+
    return true
 end
 
@@ -208,9 +208,9 @@ end
 -- @return true if succeeded, nil in case of failure.
 local function zipwriter_close(self)
    local zh = self.ziphandle
-   
+
    local central_directory_offset = zh:seek()
-   
+
    local size_of_central_directory = 0
    -- Central directory structure
    for _, lfh in ipairs(self.files) do
@@ -234,7 +234,7 @@ local function zipwriter_close(self)
       zh:write(lfh.file_name)
       size_of_central_directory = size_of_central_directory + 46 + lfh.file_name_length
    end
-   
+
    -- End of central directory record
    zh:write(END_OF_CENTRAL_DIR_SIGNATURE) -- signature
    zh:write(number_to_lestring(0, 2)) -- number of this disk
@@ -253,16 +253,16 @@ end
 -- @param name filename of the zipfile to be created.
 -- @return a zip handle, or nil in case of error.
 function zip.new_zipwriter(name)
-   
+
    local zw = {}
-  
+
    zw.ziphandle = io.open(fs.absolute_name(name), "wb")
    if not zw.ziphandle then
       return nil
    end
    zw.files = {}
    zw.in_open_file = false
-   
+
    zw.add = zipwriter_add
    zw.close = zipwriter_close
    zw.open_new_file_in_zip = zipwriter_open_new_file_in_zip
@@ -381,7 +381,7 @@ local function process_end_of_central_dir(zh)
          return nil, "Could not find End of Central Directory signature"
       end
    end
-   
+
    -- number of this disk (2 bytes)
    -- number of the disk with the start of the central directory (2 bytes)
    -- total number of entries in the central directory on this disk (2 bytes)
@@ -450,7 +450,7 @@ function zip.unzip(zipfile)
    if not cd_entries then
       return nil, cd_offset
    end
-   
+
    local ok, err = zh:seek("set", cd_offset)
    if not ok then
       return nil, err
@@ -513,7 +513,7 @@ end
 function zip.gzip(input_filename, output_filename)
    assert(type(input_filename) == "string")
    assert(output_filename == nil or type(output_filename) == "string")
-   
+
    if not output_filename then
       output_filename = input_filename .. ".gz"
    end
@@ -525,7 +525,7 @@ end
 function zip.gunzip(input_filename, output_filename)
    assert(type(input_filename) == "string")
    assert(output_filename == nil or type(output_filename) == "string")
-   
+
    if not output_filename then
       output_filename = input_filename:gsub("%.gz$", "")
    end
diff --git a/src/luarocks/type/manifest.lua b/src/luarocks/type/manifest.lua
index bf985ad3..043366ea 100644
--- a/src/luarocks/type/manifest.lua
+++ b/src/luarocks/type/manifest.lua
@@ -64,7 +64,7 @@ local manifest_formats = type_check.declare_schemas({
 })
 
 --- Type check a manifest table.
--- Verify the correctness of elements from a 
+-- Verify the correctness of elements from a
 -- manifest table, reporting on unknown fields and type
 -- mismatches.
 -- @return boolean or (nil, string): true if type checking
diff --git a/src/luarocks/type/rockspec.lua b/src/luarocks/type/rockspec.lua
index 8214516e..0b4b5dcf 100644
--- a/src/luarocks/type/rockspec.lua
+++ b/src/luarocks/type/rockspec.lua
@@ -89,13 +89,13 @@ local rockspec_formats, versions = type_check.declare_schemas({
          post_install = { _type = "string" },
       },
    },
-   
+
    ["1.1"] = {
       deploy = {
          wrap_bin_scripts = { _type = "boolean" },
       }
    },
-   
+
    ["3.0"] = {
       description = {
          labels = {
@@ -135,7 +135,7 @@ local rockspec_formats, versions = type_check.declare_schemas({
    }
 })
 
-type_rockspec.order = {"rockspec_format", "package", "version", 
+type_rockspec.order = {"rockspec_format", "package", "version",
    { "source", { "url", "tag", "branch", "md5" } },
    { "description", {"summary", "detailed", "homepage", "license" } },
    "supported_platforms", "dependencies", "build_dependencies", "external_dependencies",
@@ -160,7 +160,7 @@ local function check_rockspec_using_version(rockspec, globals, version)
 end
 
 --- Type check a rockspec table.
--- Verify the correctness of elements from a 
+-- Verify the correctness of elements from a
 -- rockspec table, reporting on unknown fields and type
 -- mismatches.
 -- @return boolean or (nil, string): true if type checking
diff --git a/src/luarocks/type_check.lua b/src/luarocks/type_check.lua
index bdf8ecc8..21085ef9 100644
--- a/src/luarocks/type_check.lua
+++ b/src/luarocks/type_check.lua
@@ -22,7 +22,7 @@ do
          end
       end
    end
-   
+
    local function expand_magic_platforms(tbl)
       for k,v in pairs(tbl) do
          if v == type_check.MAGIC_PLATFORMS then
@@ -35,7 +35,7 @@ do
          end
       end
    end
-   
+
    -- Build a table of schemas.
    -- @param versions a table where each key is a version number as a string,
    -- and the value is a schema specification. Schema versions are considered
@@ -44,7 +44,7 @@ do
    function type_check.declare_schemas(inputs)
       local schemas = {}
       local parent_version
-   
+
       local versions = fun.reverse_in(fun.sort_in(util.keys(inputs), vers.compare_versions))
 
       for _, version in ipairs(versions) do
@@ -99,10 +99,10 @@ local function type_check_item(version, item, typetbl, context)
          return nil, err
       end
    end
-   
+
    local item_type = type(item) or "nil"
    local expected_type = typetbl._type or "table"
-   
+
    if expected_type == "number" then
       if not tonumber(item) then
          return nil, "Type mismatch on field "..context..": expected a number"
@@ -148,7 +148,7 @@ end
 -- in tbl that is correctly typed, type(tbl.x) == type(types.x)).
 -- If the reference table contains a field called MORE, then
 -- unknown fields in the checked table are accepted.
--- If it contains a field called ANY, then its type will be 
+-- If it contains a field called ANY, then its type will be
 -- used to check any unknown fields. If a field is prefixed
 -- with MUST_, it is mandatory; its absence from the table is
 -- a type error.
@@ -174,7 +174,7 @@ function type_check.type_check_table(version, tbl, typetbl, context)
 
    for k, v in pairs(tbl) do
       local t = typetbl[k] or typetbl._any
-      if t then 
+      if t then
          local ok, err = type_check_item(version, v, t, mkfield(context, k))
          if not ok then return nil, err end
       elseif typetbl._more then
diff --git a/src/luarocks/upload/api.lua b/src/luarocks/upload/api.lua
index a28b517a..df57fc80 100644
--- a/src/luarocks/upload/api.lua
+++ b/src/luarocks/upload/api.lua
@@ -120,7 +120,7 @@ function Api:request(url, params, post_params)
    local vars = cfg.variables
    local json_ok, json = util.require_json()
    if not json_ok then return nil, "A JSON library is required for this command. "..json end
-   
+
    if fs.which_tool("downloader") == "wget" then
       local curl_ok, err = fs.is_tool_available(vars.CURL, "curl")
       if not curl_ok then
@@ -135,7 +135,7 @@ function Api:request(url, params, post_params)
       url = url .. ("?" .. encode_query_string(params))
    end
    local method = "GET"
-   local out 
+   local out
    local tmpfile = fs.tmpname()
    if post_params then
       method = "POST"
@@ -148,7 +148,7 @@ function Api:request(url, params, post_params)
          curl_cmd = curl_cmd .. "--form \""..k.."="..var.."\" "
       end
       if cfg.connection_timeout and cfg.connection_timeout > 0 then
-        curl_cmd = curl_cmd .. "--connect-timeout "..tonumber(cfg.connection_timeout).." " 
+        curl_cmd = curl_cmd .. "--connect-timeout "..tonumber(cfg.connection_timeout).." "
       end
       local ok = fs.execute_string(curl_cmd..fs.Q(url).." -o "..fs.Q(tmpfile))
       if not ok then
@@ -206,7 +206,7 @@ function Api:request(url, params, post_params)
    if not http_ok then
       return nil, "Failed loading socket library!"
    end
-   
+
    if not self.config.key then
       return nil, "Must have API key before performing any actions."
    end
diff --git a/src/luarocks/util.lua b/src/luarocks/util.lua
index 6161a061..ae96eb6a 100644
--- a/src/luarocks/util.lua
+++ b/src/luarocks/util.lua
@@ -34,7 +34,7 @@ local debug = require("debug")
 -- which can be used to remove the item later from the list.
 function util.schedule_function(f, ...)
    assert(type(f) == "function")
-   
+
    local item = { fn = f, args = pack(...) }
    table.insert(scheduled_functions, item)
    return item
@@ -122,12 +122,12 @@ end
 -- exists in vars. Only string values are processed; this function
 -- does not scan subtables recursively.
 -- @param tbl table: Table to have its string values modified.
--- @param vars table: Table containing string-string key-value pairs 
+-- @param vars table: Table containing string-string key-value pairs
 -- representing variables to replace in the strings values of tbl.
 function util.variable_substitutions(tbl, vars)
    assert(type(tbl) == "table")
    assert(type(vars) == "table")
-   
+
    local updated = {}
    for k, v in pairs(tbl) do
       if type(v) == "string" then
@@ -450,7 +450,7 @@ do
    function util.get_luajit_version()
       local cfg = require("luarocks.core.cfg")
       if cfg.cache.luajit_version_checked then
-         return cfg.cache.luajit_version 
+         return cfg.cache.luajit_version
       end
       cfg.cache.luajit_version_checked = true
 
@@ -553,9 +553,9 @@ end
 
 function util.opts_table(type_name, valid_opts)
    local opts_mt = {}
-   
+
    opts_mt.__index = opts_mt
-   
+
    function opts_mt.type()
       return type_name
    end
@@ -590,7 +590,7 @@ end
 -- "lua" for the Lua version and, for format 3.0+, "luajit" if detected).
 function util.get_rocks_provided(rockspec)
    local cfg = require("luarocks.core.cfg")
-   
+
    if not rockspec and cfg.cache.rocks_provided then
       return cfg.cache.rocks_provided
    end