site.rb in nanoc3-3.1.5

- old
+ new

@@ -342,10 +342,13 @@
         raise Nanoc3::Errors::NoMatchingRoutingRuleFound.new(rep) if rule.nil?
 
         # Get basic path by applying matching rule
         basic_path = rule.apply_to(rep)
         next if basic_path.nil?
+        if basic_path !~ %r{^/}
+          raise RuntimeError, "The path returned for the #{rep.inspect} item representation, “#{basic_path}”, does not start with a slash. Please ensure that all routing rules return a path that starts with a slash.".make_compatible_with_env
+        end
 
         # Get raw path by prepending output directory
         rep.raw_path = self.config[:output_dir] + basic_path
 
         # Get normal path by stripping index filename
@@ -362,9 +365,14 @@
 
     # Builds the configuration hash based on the given argument. Also see
     # #initialize for details.
     def build_config(dir_or_config_hash)
       if dir_or_config_hash.is_a? String
+        # Check whether it is supported
+        if dir_or_config_hash != '.'
+          warn 'WARNING: Calling Nanoc3::Site.new with a directory that is not the current working directory is not supported. It is recommended to change the directory before calling Nanoc3::Site.new. For example, instead of Nanoc3::Site.new(\'abc\'), use Dir.chdir(\'abc\') { Nanoc3::Site.new(\'.\') }.'
+        end
+
         # Read config from config.yaml in given dir
         config_path = File.join(dir_or_config_hash, 'config.yaml')
         @config = DEFAULT_CONFIG.merge(YAML.load_file(config_path).symbolize_keys)
         @config[:data_sources].map! { |ds| ds.symbolize_keys }
         @config_mtime = File.stat(config_path).mtime