Merge branch 'fix_6589' into 'master'

Add default value for `user-data` in openmw.cfg

Closes #6589

See merge request OpenMW/openmw!1632

apps/openmw/options.cpp

@@ -27,7 +27,7 @@ namespace OpenMW
             ("data", bpo::value<Files::MaybeQuotedPathContainer>()->default_value(Files::MaybeQuotedPathContainer(), "data")
                 ->multitoken()->composing(), "set data directories (later directories have higher priority)")
 
-            ("data-local", bpo::value<Files::MaybeQuotedPathContainer::value_type>()->default_value(Files::MaybeQuotedPathContainer::value_type(), ""),
+            ("data-local", bpo::value<Files::MaybeQuotedPath>()->default_value(Files::MaybeQuotedPath(), ""),
                 "set local data directory (highest priority)")
 
             ("fallback-archive", bpo::value<StringsVector>()->default_value(StringsVector(), "fallback-archive")

components/files/configurationmanager.cpp

@@ -168,9 +168,13 @@ void ConfigurationManager::addExtraConfigDirs(std::stack<boost::filesystem::path
 
 void ConfigurationManager::addCommonOptions(boost::program_options::options_description& description)
 {
+    Files::MaybeQuotedPath defaultUserData;
+    static_cast<boost::filesystem::path&>(defaultUserData) = boost::filesystem::path("?userdata?");
+
     description.add_options()
-        ("config", bpo::value<Files::MaybeQuotedPathContainer>()->multitoken()->composing(), "additional config directories")
-        ("user-data", bpo::value<Files::MaybeQuotedPath>(),
+        ("config", bpo::value<Files::MaybeQuotedPathContainer>()->default_value(Files::MaybeQuotedPathContainer(), "")
+            ->multitoken()->composing(), "additional config directories")
+        ("user-data", bpo::value<Files::MaybeQuotedPath>()->default_value(defaultUserData, ""),
             "set user data directory (used for saves, screenshots, etc)");
 }