fix: working fix to address PL referencing template paths to psuedo-patterns which don't exist. Addresses #22

Author: bolt-bot

src/PatternLab/Builder.php

@@ -261,6 +261,20 @@ protected function generatePatterns($options = array()) {
 				// modify the pattern mark-up
 				$markup        = $patternStoreData["code"];
 				$markupFull    = $patternStoreData["header"].$markup.$patternStoreData["footer"];
+
+
+				/** If the base template for a JSON / Yaml file (or psuedo pattern variation) lives in a different folder, 
+					* use the `original` pattern's template instead. 
+					* Fixes https://github.com/drupal-pattern-lab/patternlab-php-core/issues/22
+					*/
+				if (!file_exists($patternSourceDir."/".$pathName.".".$patternExtension)){
+					$originalPatternPathName = PatternData::getOption($patternStoreData["original"])["pathName"];
+					if (file_exists($patternSourceDir."/".$originalPatternPathName.".".$patternExtension)){
+						$pathName = $originalPatternPathName;
+					}
+				}
+
+
 				$markupEngine  = file_get_contents($patternSourceDir."/".$pathName.".".$patternExtension);
 
 				// if the pattern directory doesn't exist create it