Remove duplicate suffices from posts, fix internal post links, minor tweaks

_scripts/convert-repeat-suffixes.php

@@ -0,0 +1,41 @@
+<?php
+$sNewDir = 'blog/_posts.new';
+if (!is_dir($sNewDir)) {
+   mkdir($sNewDir); 
+}
+
+echo "[converting filenames]\n";
+$aReplace = [];
+foreach (glob('blog/_posts/*.md') as $sFile) {
+    $sName = basename($sFile, '.md');    
+    printf("%s...\n", $sName);    
+    if (preg_match('/-[\d]+$/', $sName, $aMatch)) {
+        $sSuffix = $aMatch[0];
+        $sNewName = substr($sName, 0, -strlen($sSuffix));
+        $sNewFile = sprintf('%s/%s.md', $sNewDir, $sNewName);
+        if (file_exists($sNewFile)) {
+            echo "    duplicate, appending -x\n";
+            $sNewName .= '-x';
+            $sNewFile = sprintf('%s/%s.md', $sNewDir, $sNewName);
+        }
+        $aReplace[$sName] = $sNewName;
+        copy($sFile, $sNewFile);
+    } else {
+        copy($sFile, sprintf('%s/%s.md', $sNewDir, $sName));
+    }
+}
+
+echo "[converting filenames]\n";
+foreach (glob(sprintf('%s/*.md', $sNewDir)) as $sFile) {
+    $sName = basename($sFile, '.md');    
+    printf("%s...\n", $sName);  
+    $sContents = file_get_contents($sFile);
+    foreach ($aReplace as $sName => $sNewName) {
+        $iCount = substr_count($sContents, $sName);
+        if ($iCount > 0) {
+            printf("    %s > %s (%d)\n", $sName, $sNewName, $iCount);
+            $sContents = str_replace($sName, $sNewName, $sContents);
+        }
+    }
+    // file_put_contents($sFile, $sNewContents);
+}