> +
+/**
+ * Registers the provided extension in Geany. There can be multiple extensions
+ * registered in Geany - these are stored in a list sorted by the priporty
+ * parameter. When executing @c _perform() functions, Geany goes through
+ * the list and executes the @c _perform() function of the first extension in
+ * the list whose @c _provided() function returns @c TRUE.
+ * 
+ * This function is typically called in the plugin @c init() function.
+ * 
+ * Plugins wishing to re-register themselves, e.g. with a different priority,
+ * should first unregister themselves using @c plugin_extension_unregister()
+ * and call @c plugin_extension_register() afterwards.
+ * 
+ * @param extension The @c PluginExtension structure instance provided by the
+ * plugin.