diff --git a/functions.php b/functions.php
index fa9cd0e..cb9e007 100644
--- a/functions.php
+++ b/functions.php
@@ -308,15 +308,20 @@ function pcre_check_error(mixed &$result, bool $no_error = false): bool {
     return true;
 }
 
-/**
- * @param string $s
- * @param string|string[]|null $keywords
- * @return string
- */
-function hl_matched(string $s, string|array|null $keywords = []): string {
+function hl_matched(string $s, string|Stringable|SkinString|array|null $keywords = []): string {
     if (is_null($keywords))
         return htmlescape($s);
 
+    if ($keywords instanceof Stringable)
+        $keywords = $keywords->__toString();
+    else if (is_array($keywords)) {
+        $keywords = array_map(function($s) {
+            if ($s instanceof Stringable)
+                return $s->__toString();
+            return $s;
+        }, $keywords);
+    }
+
     if (is_string($keywords))
         $keywords = preg_split('/\s+/', $keywords);
 
diff --git a/handler/FilesHandler.php b/handler/FilesHandler.php
index 337c835..e570734 100644
--- a/handler/FilesHandler.php
+++ b/handler/FilesHandler.php
@@ -115,8 +115,55 @@ class FilesHandler extends request_handler {
                 break;
 
             case FilesCollection::MercureDeFrance:
-                $files = mdf_get();
-                set_title('$files_mdf_collection');
+                if ($query !== null) {
+                    $files = mdf_search($query, $offset, self::SEARCH_RESULTS_PER_PAGE);
+                    $vars += [
+                        'search_count' => $files['count'],
+                        'search_query' => $query
+                    ];
+
+                    /** @var MDFCollectionItem[] $files */
+                    $files = $files['items'];
+
+                    $query_words = array_map('mb_strtolower', preg_split('/\s+/', $query));
+                    $found = [];
+                    $result_ids = [];
+                    foreach ($files as $file) {
+                        $result_ids[] = $file->id;
+
+                        foreach ([
+                            $file->date,
+                            (string)$file->issue
+                         ] as $haystack) {
+                            foreach ($query_words as $qw) {
+                                if (mb_strpos($haystack, $qw) !== false) {
+                                    $found[$file->id] = true;
+                                    continue 2;
+                                }
+                            }
+                        }
+                    }
+
+                    $found = array_map('intval', array_keys($found));
+                    $not_found = array_diff($result_ids, $found);
+                    if (!empty($not_found))
+                        $text_excerpts = mdf_get_text_excerpts($not_found, $query_words);
+
+                    if (is_xhr_request()) {
+                        ajax_ok([
+                            ...$vars,
+                            'new_offset' => $offset + count($files),
+                            'html' => skin('files')->collection_files($files, $query, $text_excerpts)
+                        ]);
+                    }
+                } else {
+                    $files = mdf_get();
+                }
+
+                $title = lang('files_mdf_collection');
+                if ($query)
+                    $title .= ' - '.htmlescape($query);
+                set_title($title);
                 break;
         }
 
diff --git a/lib/files.php b/lib/files.php
index 39716e5..9a47cc0 100644
--- a/lib/files.php
+++ b/lib/files.php
@@ -3,7 +3,7 @@
 require_once 'engine/sphinx.php';
 
 const WFF_ARCHIVE_SPHINX_RTINDEX = 'wff_collection';
-//const MDF_ARCHIVE_SPHINX/**/_RTINDEX = 'mdf_archive';
+const MDF_ARCHIVE_SPHINX_RTINDEX = 'mdf_archive';
 //const BACONIANA_ARCHIVE_SPHINX_RTINDEX = 'baconiana_archive';
 
 enum FilesCollection: string {
@@ -12,7 +12,7 @@ enum FilesCollection: string {
     case Baconiana = 'baconiana';
 
     public function isSearchSupported(): bool {
-        return $this == FilesCollection::WilliamFriedman;
+        return $this == FilesCollection::WilliamFriedman || $this == FilesCollection::MercureDeFrance;
     }
 }
 
@@ -161,13 +161,13 @@ class MDFCollectionItem extends model implements FilesItemInterface {
         return "№{$this->issue}, {$this->getHumanFriendlyDate()}";
     }
 
-    protected function getHumanFriendlyDate(): string {
+    public function getHumanFriendlyDate(): string {
         $dt = new DateTime($this->date);
         return $dt->format('j M Y');
     }
 
     public function isTargetBlank(): bool { return true; }
-    public function getId(): string { return (string)$this->issue; }
+    public function getId(): string { return $this->id; }
     public function getUrl(): string {
         global $config;
         return 'https://'.$config['files_domain'].'/Mercure-de-France-OCR/'.$this->path;
@@ -339,9 +339,7 @@ function wff_get_by_id(array $ids): array {
 }
 
 function wff_search(string $q, int $offset = 0, int $count = 0): array {
-    $query_filtered = sphinx_mkquery($q, [
-        'star' => false,
-    ]);
+    $query_filtered = sphinx_mkquery($q);
 
     $cl = sphinx_client();
     $cl->setLimits($offset, $count);
@@ -391,17 +389,24 @@ function wff_reindex(): void {
     }
 }
 
+function mdf_get_text_excerpts(array $ids, array $keywords, int $before = 50, int $after = 40): array {
+    return _get_text_excerpts('mdf_texts', 'mdf_id', $ids, $keywords, $before, $after);
+}
+
+function wff_get_text_excerpts(array $ids, array $keywords, int $before = 50, int $after = 40): array {
+    return _get_text_excerpts('wff_texts', 'wff_id', $ids, $keywords, $before, $after);
+}
+
 /**
+ * @param string $table
+ * @param string $field_id
  * @param int[] $ids
  * @param string[] $keywords  Must already be lower-cased
  * @param int $before
  * @param int $after
  * @return array
  */
-function wff_get_text_excerpts(array $ids,
-                               array $keywords,
-                               int $before = 50,
-                               int $after = 40): array {
+function _get_text_excerpts(string $table, string $field_id, array $ids, array $keywords, int $before, int $after) {
     $results = [];
     foreach ($ids as $id)
         $results[$id] = null;
@@ -411,7 +416,7 @@ function wff_get_text_excerpts(array $ids,
     $dynamic_sql_parts = [];
     $combined_parts = [];
     foreach ($keywords as $keyword) {
-        $part = "LOCATE('".$db->escape($keyword)."', LOWER(text))";
+        $part = "LOCATE('".$db->escape($keyword)."', text)";
         $dynamic_sql_parts[] = $part;
     }
     if (count($dynamic_sql_parts) > 1) {
@@ -425,7 +430,7 @@ function wff_get_text_excerpts(array $ids,
 
     $total = $before + $after;
     $sql = "SELECT
-        wff_id AS id,
+        {$field_id} AS id,
         GREATEST(
             1,
             {$combined_parts} - {$before}
@@ -442,9 +447,9 @@ function wff_get_text_excerpts(array $ids,
             )
         ) AS excerpt
     FROM
-        wff_texts
+        {$table}
     WHERE
-        wff_id IN (".implode(',', $ids).")";
+        {$field_id} IN (".implode(',', $ids).")";
 
     $q = $db->query($sql);
     while ($row = $db->fetch($q)) {
@@ -466,6 +471,63 @@ function mdf_get(): array {
     return array_map('MDFCollectionItem::create_instance', $db->fetchAll($q));
 }
 
+/**
+ * @param int[] $ids
+ * @return MDFCollectionItem[]
+ */
+function mdf_get_by_id(array $ids): array {
+    $db = DB();
+    $q = $db->query("SELECT * FROM mdf_collection WHERE id IN (".implode(',', $ids).")");
+    return array_map('MDFCollectionItem::create_instance', $db->fetchAll($q));
+}
+
+function mdf_search(string $q, int $offset = 0, int $count = 0): array {
+    $query_filtered = sphinx_mkquery($q);
+
+    $cl = sphinx_client();
+    $cl->setLimits($offset, $count);
+    $cl->setMatchMode(Sphinx\SphinxClient::SPH_MATCH_EXTENDED);
+    $cl->setFieldWeights([
+        'date' => 10,
+        'issue' => 9,
+        'text' => 8
+    ]);
+
+    $cl->setRankingMode(Sphinx\SphinxClient::SPH_RANK_PROXIMITY_BM25);
+    $cl->setSortMode(Sphinx\SphinxClient::SPH_SORT_RELEVANCE);
+
+    // run search
+    $final_query = "$query_filtered";
+    $result = $cl->query($final_query, MDF_ARCHIVE_SPHINX_RTINDEX);
+    $error = $cl->getLastError();
+    $warning = $cl->getLastWarning();
+    if ($error)
+        logError(__FUNCTION__, $error);
+    if ($warning)
+        logWarning(__FUNCTION__, $warning);
+    if ($result === false)
+        return ['count' => 0, 'items' => []];
+
+    $total_found = (int)$result['total_found'];
+
+    $items = [];
+    if (!empty($result['matches']))
+        $items = mdf_get_by_id(array_keys($result['matches']));
+
+    return ['count' => $total_found, 'items' => $items];
+}
+
+function mdf_reindex(): void {
+    sphinx_execute("TRUNCATE RTINDEX ".MDF_ARCHIVE_SPHINX_RTINDEX);
+    $db = DB();
+    $mdf = mdf_get();
+    foreach ($mdf as $item) {
+        $text = $db->result($db->query("SELECT text FROM mdf_texts WHERE mdf_id=?", $item->id));
+        sphinx_execute("INSERT INTO ".MDF_ARCHIVE_SPHINX_RTINDEX." (id, volume, issue, date, text) VALUES (?, ?, ?, ?, ?)",
+            $item->id, $item->volume, (string)$item->issue, $item->getHumanFriendlyDate(), $text);
+    }
+}
+
 /**
  * @return BookItem[]
  */
diff --git a/skin/base.phps b/skin/base.phps
index b59a2f1..bad2f9f 100644
--- a/skin/base.phps
+++ b/skin/base.phps
@@ -58,7 +58,7 @@ return <<<HTML
 <!-- /Yandex.Metrika counter -->        
 </body>
 </html>
-<!-- {$exec_time} s -->
+{$ctx->if_admin(fn() => "<!-- {$exec_time} s -->")}
 HTML;
 }
 
diff --git a/skin/files.phps b/skin/files.phps
index 0c0b618..dc2a1f0 100644
--- a/skin/files.phps
+++ b/skin/files.phps
@@ -187,7 +187,7 @@ if ($disabled)
 
 $mapper = function($s) use ($unsafe_query) {
     if ($unsafe_query !== null) {
-        return hl_matched($s, [$unsafe_query]);
+        return hl_matched($s, $unsafe_query);
     } else {
         return htmlescape($s);
     }