Implement the PER pages

app/config/sculpin_kernel.yml

@@ -21,6 +21,10 @@ sculpin_content_types:
     permalink: psr/:basename
     type: path
     path: _psr
+  per:
+    permalink: per/:basename
+    type: path
+    path: _per
   bylaws:
     singular_name: bylaw
     permalink: bylaws/:slug_title

app/lib/TwigLinkProcessor.php

@@ -11,9 +11,15 @@ class TwigLinkProcessor extends AbstractExtension
     {
         return [
             new TwigFilter('processLinks', function(string $input): string {
-                $step1 = $this->filterPsrLinks($input);
-                $step2 = $this->filterBylawsLinks($step1);
-                return $step2;
+                if (str_contains($input, 'accepted/PSR-')) {
+                    return $this->filterPsrLinks($input); 
+                }
+
+                if (str_contains($input, '/php-fig/per-')) {
+                    return $this->filterPerLinks($input); 
+                }
+                
+                return $this->filterBylawsLinks($input);
             }),
         ];
     }
@@ -27,6 +33,15 @@ class TwigLinkProcessor extends AbstractExtension
         );
     }
 
+    private function filterPerLinks(string $input): string
+    {
+        return preg_replace(
+            '/(\[.*?\]:) http(?:s)?:\/\/github\.com\/php-fig\/per-([\w-]+)\/blob\/[\w.]+\/.*\.md/i',
+            '\1 /per/\2',
+            $input
+        );
+    }
+
     private function filterBylawsLinks(string $input): string
     {
         return preg_replace(

source/_layouts/per.twig

@@ -0,0 +1 @@
+{% extends 'psr' %}

source/_per/coding-style-meta.twig

@@ -0,0 +1,10 @@
+---
+permalink: /per/coding-style/meta
+title: 'PER Coding Style Meta Document'
+markdown_source: per-coding-style/meta.md
+related:
+    - { name: 'PER Coding Style', permalink: /per/coding-style }
+    - { name: 'PER Coding Style Meta Document' }
+---
+
+{{ parent() }}

source/_per/coding-style.twig

@@ -0,0 +1,10 @@
+---
+permalink: /per/coding-style
+title: 'PER Coding Style'
+markdown_source: per-coding-style/spec.md
+related:
+    - { name: 'PER Coding Style' }
+    - { name: 'PER Coding Style Meta Document', permalink: /per/coding-style/meta }
+---
+
+{{ parent() }}

source/index.twig

@@ -130,6 +130,7 @@ interface RequestInterface extends MessageInterface
                     <h2 class="home_features__title">Coding Styles</h2>
                     <p class="home_features__description">Standardized formatting reduces the cognitive friction when reading code from other authors.</p>
                     <ul class="home_features__links">
+                        <li><a class="home_features__link" href="/per/coding-style/">PER Coding Style</a></li>
                         <li><a class="home_features__link" href="/psr/psr-1/">PSR-1: Basic Coding Standard</a></li>
                         <li><a class="home_features__link" href="/psr/psr-12/">PSR-12: Extended Coding Style Guide</a></li>
                     </ul>