Scratchpads V1

.github/workflows/dokuwiki.yml

@@ -1,11 +0,0 @@
-name: DokuWiki Default Tasks
-on:
-  push:
-  pull_request:
-  schedule:
-    - cron: '58 2 25 * *'
-
-
-jobs:
-  all:
-    uses: dokuwiki/github-action/.github/workflows/all.yml@main

.github/workflows/instructions.md

@@ -0,0 +1,4 @@
+# Development instructions
+
+- Do not use `phpunit` There are missing dependencies that make it fail.
+- Consider The official documentation for wirting dokuwiki plugins: https://www.dokuwiki.org/devel:plugins

README

@@ -12,6 +12,21 @@ will not work!
 Syntax:
 	{{files>...}}
 
+Scratchpad (shared, file-backed, no page revisions):
+	{{scratchpad>...}}
+
+The scratchpad is resolved via the "scratchpad_paths" setting.
+
+Each scratchpad entry is a full filesystem path to a file (including extension),
+followed by an alias line that defines the pad name used in the wiki.
+
+Example:
+	/var/lib/dokuwiki-scratchpads/startpad.txt
+	A> start
+
+Then use:
+	{{scratchpad>start}}
+
 Please refer to http://www.dokuwiki.org/extensions for additional info
 on how to install extensions in DokuWiki.
 

ScratchpadMap.php

@@ -0,0 +1,96 @@
+<?php
+
+namespace dokuwiki\plugin\luxtools;
+
+/**
+ * Maps scratchpad aliases (used in wiki pages) to full filesystem file paths.
+ *
+ * Config format (one per line):
+ *   /full/path/to/pad-file.txt
+ *   A> padname
+ *
+ * The next A> line assigns an alias for the previously listed file.
+ */
+class ScratchpadMap
+{
+    /** @var array<string, array{alias:string, path:string}> */
+    protected $map = [];
+
+    /**
+     * @param string $config
+     */
+    public function __construct($config)
+    {
+        $this->map = $this->parseConfig((string)$config);
+    }
+
+    /**
+     * Resolve the given alias to a full file path.
+     *
+     * @param string $alias
+     * @return string
+     * @throws \Exception
+     */
+    public function resolve($alias)
+    {
+        $alias = trim((string)$alias);
+        if ($alias === '') throw new \Exception('Empty alias');
+        if (!isset($this->map[$alias])) {
+            throw new \Exception('Unknown scratchpad alias');
+        }
+        return (string)$this->map[$alias]['path'];
+    }
+
+    /**
+     * Return the parsed mapping.
+     *
+     * @return array<string, array{alias:string, path:string}>
+     */
+    public function getMap()
+    {
+        return $this->map;
+    }
+
+    /**
+     * @param string $config
+     * @return array<string, array{alias:string, path:string}>
+     */
+    protected function parseConfig($config)
+    {
+        $map = [];
+        $lines = explode("\n", (string)$config);
+
+        $lastFile = '';
+        foreach ($lines as $line) {
+            $line = trim($line);
+            if ($line === '') continue;
+
+            if (str_starts_with($line, 'A>')) {
+                $alias = trim(substr($line, 2));
+                if ($alias === '' || $lastFile === '') continue;
+                $map[$alias] = [
+                    'alias' => $alias,
+                    'path' => $lastFile,
+                ];
+                continue;
+            }
+
+            // Ignore W> lines for compatibility with the Path config style
+            if (str_starts_with($line, 'W>')) {
+                continue;
+            }
+
+            // Treat as file path (no trailing slash enforced)
+            $filePath = Path::cleanPath($line, false);
+            if ($filePath === '' || str_ends_with($filePath, '/')) {
+                // Ignore invalid entries; they will not be resolvable
+                $lastFile = '';
+                continue;
+            }
+
+            $lastFile = $filePath;
+        }
+
+        return $map;
+    }
+}

_test/ScratchpadMapTest.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace dokuwiki\plugin\luxtools\test;
+
+use dokuwiki\plugin\luxtools\ScratchpadMap;
+use DokuWikiTest;
+
+/**
+ * ScratchpadMap tests for the luxtools plugin
+ *
+ * @group plugin_luxtools
+ * @group plugins
+ */
+class ScratchpadMapTest extends DokuWikiTest
+{
+    public function testResolveAndParsing()
+    {
+        $map = new ScratchpadMap(
+            <<<EOT
+/var/scratchpads/startpad.txt
+A> start
+
+C:\\pads\\notes.md
+A> notes
+W> ignored
+
+\\\\server\\share\\pads\\team.txt
+A> team
+EOT
+        );
+
+        $this->assertEquals('/var/scratchpads/startpad.txt', $map->resolve('start'));
+        $this->assertEquals('C:/pads/notes.md', $map->resolve('notes'));
+        $this->assertEquals('\\\\server/share/pads/team.txt', $map->resolve('team'));
+    }
+
+    public function testUnknownAliasThrows()
+    {
+        $map = new ScratchpadMap("/tmp/pad.txt\nA> pad\n");
+        $this->expectExceptionMessageMatches('/Unknown scratchpad alias/');
+        $map->resolve('nope');
+    }
+}

admin/main.php

@@ -11,6 +11,7 @@ class admin_plugin_luxtools_main extends DokuWiki_Admin_Plugin
     /** @var string[] */
     protected $configKeys = [
         'paths',
+        'scratchpad_paths',
         'allow_in_comments',
         'defaults',
         'extensions',
@@ -51,6 +52,11 @@ class admin_plugin_luxtools_main extends DokuWiki_Admin_Plugin
         $paths = $INPUT->str('paths');
         $paths = str_replace(["\r\n", "\r"], "\n", $paths);
         $newConf['paths'] = $paths;
+
+        $scratchpadPaths = $INPUT->str('scratchpad_paths');
+        $scratchpadPaths = str_replace(["\r\n", "\r"], "\n", $scratchpadPaths);
+        $newConf['scratchpad_paths'] = $scratchpadPaths;
+
         $newConf['allow_in_comments'] = (int)$INPUT->bool('allow_in_comments');
         $newConf['defaults'] = $INPUT->str('defaults');
         $newConf['extensions'] = $INPUT->str('extensions');
@@ -88,6 +94,12 @@ class admin_plugin_luxtools_main extends DokuWiki_Admin_Plugin
         echo '<textarea name="paths" rows="8" cols="80" class="edit">' . hsc($paths) . '</textarea>';
         echo '</label><br />';
 
+        // scratchpad_paths: multiline textarea
+        $scratchpadPaths = (string)$this->getConf('scratchpad_paths');
+        echo '<label class="block"><span>' . hsc($this->getLang('scratchpad_paths')) . '</span><br />';
+        echo '<textarea name="scratchpad_paths" rows="6" cols="80" class="edit">' . hsc($scratchpadPaths) . '</textarea>';
+        echo '</label><br />';
+
         // allow_in_comments
         $checked = $this->getConf('allow_in_comments') ? ' checked="checked"' : '';
         echo '<label class="block"><span>' . hsc($this->getLang('allow_in_comments')) . '</span> ';
@@ -128,7 +140,11 @@ class admin_plugin_luxtools_main extends DokuWiki_Admin_Plugin
     }
 
     /**
-     * Persist plugin settings to conf/plugins/luxtools.local.php.
+     * Persist plugin settings to conf/local.php.
+     *
+     * DokuWiki loads conf/local.php on each request; values written there will
+     * be available via getConf(). We write into a dedicated BEGIN/END block so
+     * updates are idempotent.
      *
      * @param array $newConf
      * @return bool
@@ -138,30 +154,62 @@ class admin_plugin_luxtools_main extends DokuWiki_Admin_Plugin
         if (!defined('DOKU_CONF')) return false;
 
         $plugin = 'luxtools';
-        $confDir = DOKU_CONF . 'plugins/';
-        $file = $confDir . $plugin . '.local.php';
+        $file = DOKU_CONF . 'local.php';
 
-        if (function_exists('io_mkdir_p')) {
-            io_mkdir_p($confDir);
-        } elseif (!@is_dir($confDir)) {
-            @mkdir($confDir, 0777, true);
+        $existing = '';
+        if (@is_file($file) && @is_readable($file)) {
+            $existing = (string)file_get_contents($file);
+        }
+        if ($existing === '') {
+            $existing = "<?php\n";
+        }
+        if (!str_starts_with($existing, "<?php")) {
+            // unexpected format - do not overwrite
+            return false;
         }
 
-        // Only write known keys; ignore extras.
-        $lines = ["<?php"]; 
+        $begin = "// BEGIN LUXTOOLS\n";
+        $end = "// END LUXTOOLS\n";
+
+        // Build the block
+        $lines = [$begin];
         foreach ($this->configKeys as $key) {
             if (!array_key_exists($key, $newConf)) continue;
             $value = $newConf[$key];
-            $lines[] = '$conf[' . var_export($key, true) . '] = ' . $this->exportPhpValue($value, $key) . ';';
+            $lines[] = '$conf[\'plugin\'][\'' . $plugin . '\'][' . var_export($key, true) . '] = ' . $this->exportPhpValue($value, $key) . ';';
         }
-        $lines[] = '';
-        $content = implode("\n", $lines);
+        $lines[] = $end;
+        $block = implode("\n", $lines);
 
+        // Replace or append the block in conf/local.php
+        $beginPos = strpos($existing, $begin);
+        if ($beginPos !== false) {
+            $endPos = strpos($existing, $end, $beginPos);
+            if ($endPos === false) {
+                // malformed existing block - append a new one
+                $content = rtrim($existing) . "\n\n" . $block;
+            } else {
+                $endPos += strlen($end);
+                $content = substr($existing, 0, $beginPos) . $block . substr($existing, $endPos);
+            }
+        } else {
+            $content = rtrim($existing) . "\n\n" . $block;
+        }
+
+        $ok = false;
         if (function_exists('io_saveFile')) {
-            return (bool)io_saveFile($file, $content);
+            $ok = (bool)io_saveFile($file, $content);
+        } else {
+            $ok = @file_put_contents($file, $content, LOCK_EX) !== false;
         }
 
-        return @file_put_contents($file, $content, LOCK_EX) !== false;
+        // Best-effort cleanup: stop creating/using legacy conf/plugins/luxtools.local.php
+        $legacy = DOKU_CONF . 'plugins/' . $plugin . '.local.php';
+        if (@is_file($legacy)) {
+            @unlink($legacy);
+        }
+
+        return $ok;
     }
 
     /**

conf/default.php

@@ -5,6 +5,7 @@
  */
 
 $conf['paths'] = '';
+$conf['scratchpad_paths'] = '';
 $conf['allow_in_comments'] = 0;
 $conf['defaults'] = '';
 $conf['extensions'] = '';

lang/de/lang.php

@@ -22,7 +22,7 @@ $lang['settings'] = 'luxtools-Einstellungen';
 $lang['legend'] = 'Einstellungen';
 $lang['btn_save'] = 'Speichern';
 $lang['saved'] = 'Einstellungen gespeichert.';
-$lang['err_save'] = 'Einstellungen konnten nicht gespeichert werden. Bitte Schreibrechte für conf/plugins/ prüfen.';
+$lang['err_save'] = 'Einstellungen konnten nicht gespeichert werden. Bitte Schreibrechte für conf/local.php prüfen.';
 $lang['err_security'] = 'Sicherheits-Token ungültig. Bitte erneut versuchen.';
 
 $lang['paths'] = 'Erlaubte Basis-Pfade (eine pro Zeile oder komma-separiert).';

lang/en/lang.php

@@ -22,13 +22,21 @@ $lang['settings'] = 'luxtools settings';
 $lang['legend'] = 'Settings';
 $lang['btn_save'] = 'Save';
 $lang['saved'] = 'Settings saved.';
-$lang['err_save'] = 'Could not save settings. Please check write permissions for conf/plugins/.';
+$lang['err_save'] = 'Could not save settings. Please check write permissions for conf/local.php.';
 $lang['err_security'] = 'Security token mismatch. Please retry.';
 
 $lang['paths'] = 'Allowed base paths (one per line or comma-separated).';
+$lang['scratchpad_paths'] = 'Scratchpad files (one per line). Each file path must include the extension. Use a following A> line to set the pad name used in the wiki.';
 $lang['allow_in_comments'] = 'Whether to allow the files syntax to be used in comments.';
 $lang['defaults'] = 'Default options. Use the same syntax as in inline configuration.';
 $lang['extensions'] = 'Comma-separated list of allowed file extensions to list.';
 $lang['thumb_placeholder'] = 'MediaManager ID for the gallery thumbnail placeholder.';
 $lang['gallery_thumb_scale'] = 'Gallery thumbnail scale factor. Use 2 for sharper thumbnails on HiDPI screens (still displayed as 150×150).';
 $lang['open_service_url'] = 'Local client service URL for the {{open>...}} button (e.g. http://127.0.0.1:8765).';
+
+$lang['scratchpad_edit'] = 'Edit scratchpad';
+$lang['scratchpad_save'] = 'Save';
+$lang['scratchpad_cancel'] = 'Cancel';
+$lang['scratchpad_err_nopath'] = 'Scratchpad path missing';
+$lang['scratchpad_err_badpath'] = 'Invalid scratchpad path';
+$lang['scratchpad_err_unknown'] = 'Unknown scratchpad pad name';

lang/en/settings.php

@@ -1,6 +1,7 @@
 <?php
 
 $lang['paths'] = 'Allowed base paths (one per line or comma-separated).';
+$lang['scratchpad_paths'] = 'Scratchpad files (one per line). Each file path must include the extension; use a following A> line to set the pad name used in the wiki.';
 $lang['allow_in_comments'] = 'Whether to allow the files syntax to be used in comments.';
 $lang['defaults'] = 'Default options. Use the same syntax as in inline configuration';
 $lang['extensions'] = 'Comma-separated list of allowed file extensions to list';

scratchpad.php

@@ -0,0 +1,117 @@
+<?php
+
+// phpcs:disable PSR1.Files.SideEffects.FoundWithSymbols
+
+use dokuwiki\plugin\luxtools\Path;
+use dokuwiki\plugin\luxtools\ScratchpadMap;
+
+if (!defined('DOKU_INC')) define('DOKU_INC', __DIR__ . '/../../../');
+require_once(DOKU_INC . 'inc/init.php');
+
+global $INPUT;
+
+$syntax = plugin_load('syntax', 'luxtools');
+if (!$syntax) {
+    http_status(500);
+    header('Content-Type: application/json');
+    echo json_encode(['ok' => false, 'error' => 'plugin disabled']);
+    exit;
+}
+
+/**
+ * Send a JSON response.
+ *
+ * @param int $status
+ * @param array $payload
+ * @return void
+ */
+function luxtools_scratchpad_json(int $status, array $payload): void
+{
+    http_status($status);
+    header('Content-Type: application/json; charset=utf-8');
+    header('Cache-Control: no-store, no-cache, must-revalidate');
+    header('Pragma: no-cache');
+    echo json_encode($payload);
+    exit;
+}
+
+$cmd = (string)$INPUT->str('cmd');
+$pad = (string)$INPUT->str('pad');
+$pageId = (string)$INPUT->str('id');
+if (function_exists('cleanID')) {
+    $pageId = cleanID($pageId);
+}
+
+if ($cmd === '' || $pad === '' || $pageId === '') {
+    luxtools_scratchpad_json(400, ['ok' => false, 'error' => 'missing parameters']);
+}
+
+// Require the user to at least be able to read the host page.
+if (function_exists('auth_quickaclcheck') && auth_quickaclcheck($pageId) < AUTH_READ) {
+    luxtools_scratchpad_json(403, ['ok' => false, 'error' => 'forbidden']);
+}
+
+$map = new ScratchpadMap((string)$syntax->getConf('scratchpad_paths'));
+
+try {
+    $resolved = (string)$map->resolve($pad);
+
+    if ($resolved === '' || str_ends_with($resolved, '/')) {
+        throw new Exception('Invalid scratchpad path');
+    }
+
+    // Never allow writing/reading within DokuWiki-controlled paths.
+    if (Path::isWikiControlled(Path::cleanPath($resolved, false))) {
+        throw new Exception('Access to wiki files is not allowed');
+    }
+} catch (Exception $e) {
+    luxtools_scratchpad_json(403, ['ok' => false, 'error' => 'access denied']);
+}
+
+if ($cmd === 'load') {
+    $text = '';
+    if (@is_file($resolved) && @is_readable($resolved)) {
+        $text = (string)io_readFile($resolved, false);
+    }
+    luxtools_scratchpad_json(200, ['ok' => true, 'text' => $text]);
+}
+
+if ($cmd === 'save') {
+    if (strtoupper($_SERVER['REQUEST_METHOD'] ?? '') !== 'POST') {
+        luxtools_scratchpad_json(405, ['ok' => false, 'error' => 'method not allowed']);
+    }
+
+    // Require edit permission on the host page.
+    if (function_exists('auth_quickaclcheck') && auth_quickaclcheck($pageId) < AUTH_EDIT) {
+        luxtools_scratchpad_json(403, ['ok' => false, 'error' => 'forbidden']);
+    }
+
+    if (!checkSecurityToken()) {
+        luxtools_scratchpad_json(403, ['ok' => false, 'error' => 'bad token']);
+    }
+
+    $text = (string)$INPUT->str('text');
+
+    // Ensure directory exists
+    $dir = dirname($resolved);
+    if (function_exists('io_mkdir_p')) {
+        io_mkdir_p($dir);
+    } elseif (!@is_dir($dir)) {
+        @mkdir($dir, 0777, true);
+    }
+
+    $ok = false;
+    if (function_exists('io_saveFile')) {
+        $ok = (bool)io_saveFile($resolved, $text);
+    } else {
+        $ok = @file_put_contents($resolved, $text, LOCK_EX) !== false;
+    }
+
+    if (!$ok) {
+        luxtools_scratchpad_json(500, ['ok' => false, 'error' => 'save failed']);
+    }
+
+    luxtools_scratchpad_json(200, ['ok' => true]);
+}
+
+luxtools_scratchpad_json(400, ['ok' => false, 'error' => 'unknown command']);

script.js

@@ -284,6 +284,142 @@
     return path;
   }
 
+  function initScratchpads() {
+    var pads = document.querySelectorAll('div.luxtools-scratchpad[data-luxtools-scratchpad="1"]');
+    if (!pads || !pads.length) return;
+
+    function setStatus(root, msg) {
+      var el = root.querySelector('.luxtools-scratchpad-status');
+      if (!el) return;
+      el.textContent = msg || '';
+    }
+
+    function getSectok() {
+      try {
+        if (window.JSINFO && window.JSINFO.sectok) return String(window.JSINFO.sectok);
+      } catch (e) {}
+      return '';
+    }
+
+    function loadPad(root) {
+      var endpoint = (root.getAttribute('data-endpoint') || '').trim();
+      var pad = (root.getAttribute('data-pad') || '').trim();
+      var pageId = (root.getAttribute('data-pageid') || '').trim();
+      if (!endpoint || !pad || !pageId) return Promise.reject(new Error('missing params'));
+
+      var url = endpoint + '?cmd=load&pad=' + encodeURIComponent(pad) + '&id=' + encodeURIComponent(pageId);
+      return window.fetch(url, {
+        method: 'GET',
+        credentials: 'same-origin'
+      }).then(function (res) {
+        return res.json().catch(function () { return null; }).then(function (body) {
+          if (!res.ok || !body || body.ok !== true) {
+            var msg = (body && body.error) ? body.error : ('HTTP ' + res.status);
+            throw new Error(msg);
+          }
+          return body.text || '';
+        });
+      });
+    }
+
+    function savePad(root, text) {
+      var endpoint = (root.getAttribute('data-endpoint') || '').trim();
+      var pad = (root.getAttribute('data-pad') || '').trim();
+      var pageId = (root.getAttribute('data-pageid') || '').trim();
+      if (!endpoint || !pad || !pageId) return Promise.reject(new Error('missing params'));
+
+      var params = new window.URLSearchParams();
+      params.set('cmd', 'save');
+      params.set('pad', pad);
+      params.set('id', pageId);
+      params.set('text', text || '');
+      params.set('sectok', getSectok());
+
+      return window.fetch(endpoint, {
+        method: 'POST',
+        credentials: 'same-origin',
+        headers: { 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8' },
+        body: params.toString()
+      }).then(function (res) {
+        return res.json().catch(function () { return null; }).then(function (body) {
+          if (!res.ok || !body || body.ok !== true) {
+            var msg = (body && body.error) ? body.error : ('HTTP ' + res.status);
+            throw new Error(msg);
+          }
+          return true;
+        });
+      });
+    }
+
+    function openEditor(root) {
+      var editor = root.querySelector('.luxtools-scratchpad-editor');
+      var textarea = root.querySelector('textarea.luxtools-scratchpad-text');
+      if (!editor || !textarea) return;
+
+      editor.hidden = false;
+      setStatus(root, 'Loading…');
+      textarea.disabled = true;
+
+      loadPad(root).then(function (text) {
+        textarea.value = text;
+        textarea.disabled = false;
+        setStatus(root, '');
+        textarea.focus();
+      }).catch(function (e) {
+        textarea.disabled = false;
+        setStatus(root, 'Load failed: ' + (e && e.message ? e.message : 'error'));
+      });
+    }
+
+    function closeEditor(root) {
+      var editor = root.querySelector('.luxtools-scratchpad-editor');
+      if (!editor) return;
+      editor.hidden = true;
+      setStatus(root, '');
+    }
+
+    document.addEventListener('click', function (e) {
+      var t = e.target;
+      if (!t) return;
+
+      var edit = t.closest ? t.closest('a.luxtools-scratchpad-edit') : null;
+      if (edit) {
+        var root = edit.closest('div.luxtools-scratchpad');
+        if (!root) return;
+        e.preventDefault();
+        openEditor(root);
+        return;
+      }
+
+      var save = t.closest ? t.closest('button.luxtools-scratchpad-save') : null;
+      if (save) {
+        var rootS = save.closest('div.luxtools-scratchpad');
+        if (!rootS) return;
+        e.preventDefault();
+        var textareaS = rootS.querySelector('textarea.luxtools-scratchpad-text');
+        if (!textareaS) return;
+        textareaS.disabled = true;
+        setStatus(rootS, 'Saving…');
+        savePad(rootS, textareaS.value).then(function () {
+          setStatus(rootS, 'Saved. Reloading…');
+          try { window.location.reload(); } catch (err) {}
+        }).catch(function (err) {
+          textareaS.disabled = false;
+          setStatus(rootS, 'Save failed: ' + (err && err.message ? err.message : 'error'));
+        });
+        return;
+      }
+
+      var cancel = t.closest ? t.closest('button.luxtools-scratchpad-cancel') : null;
+      if (cancel) {
+        var rootC = cancel.closest('div.luxtools-scratchpad');
+        if (!rootC) return;
+        e.preventDefault();
+        closeEditor(rootC);
+      }
+    }, true);
+  }
+
   function findOpenElement(target) {
     var el = target;
     while (el && el !== document) {
@@ -350,4 +486,5 @@
 
   document.addEventListener('click', onClick, false);
   document.addEventListener('DOMContentLoaded', initGalleryThumbs, false);
+  document.addEventListener('DOMContentLoaded', initScratchpads, false);
 })();

style.css

@@ -96,6 +96,54 @@ div.luxtools-gallery .luxtools-gallery-caption {
     pointer-events: none;
 }
 
+/* Scratchpad */
+div.luxtools-scratchpad {
+    position: relative;
+}
+
+div.luxtools-scratchpad .luxtools-scratchpad-bar {
+    display: flex;
+    justify-content: flex-end;
+    margin-bottom: 0.2em;
+}
+
+div.luxtools-scratchpad a.luxtools-scratchpad-edit {
+    text-decoration: none;
+    opacity: 0.7;
+    padding: 0 0.2em;
+}
+div.luxtools-scratchpad a.luxtools-scratchpad-edit:hover,
+div.luxtools-scratchpad a.luxtools-scratchpad-edit:focus {
+    opacity: 1;
+}
+
+div.luxtools-scratchpad .luxtools-scratchpad-editor {
+    margin-top: 0.4em;
+}
+
+div.luxtools-scratchpad textarea.luxtools-scratchpad-text {
+    width: 100%;
+    box-sizing: border-box;
+    min-height: 8em;
+}
+
+div.luxtools-scratchpad .luxtools-scratchpad-actions {
+    display: flex;
+    align-items: center;
+    gap: 0.4em;
+    margin-top: 0.35em;
+}
+
+div.luxtools-scratchpad .luxtools-scratchpad-status {
+    opacity: 0.8;
+    font-size: 90%;
+}
+
+div.luxtools-scratchpad .luxtools-scratchpad-error {
+    opacity: 0.8;
+    font-style: italic;
+}
+
 /* Disable background scrolling while the lightbox is open. */
 html.luxtools-noscroll,
 html.luxtools-noscroll body {

syntax.php

@@ -2,6 +2,7 @@
 
 require_once(__DIR__ . '/syntax/AbstractSyntax.php');
 require_once(__DIR__ . '/syntax/files.php');
+require_once(__DIR__ . '/syntax/scratchpad.php');
 
 /**
  * luxtools plugin bootstrap.

syntax/scratchpad.php

@@ -0,0 +1,183 @@
+<?php
+
+use dokuwiki\Extension\SyntaxPlugin;
+use dokuwiki\plugin\luxtools\Path;
+use dokuwiki\plugin\luxtools\ScratchpadMap;
+
+/**
+ * luxtools Plugin: Scratchpad syntax.
+ *
+ * Renders the contents of a configured file as wikitext and provides a minimal
+ * inline editor that saves directly to that file (no page revisions).
+ */
+class syntax_plugin_luxtools_scratchpad extends SyntaxPlugin
+{
+    /** @inheritdoc */
+    public function getType()
+    {
+        return 'substition';
+    }
+
+    /** @inheritdoc */
+    public function getPType()
+    {
+        return 'block';
+    }
+
+    /** @inheritdoc */
+    public function getSort()
+    {
+        // After most formatting, similar to other luxtools syntaxes
+        return 223;
+    }
+
+    /** @inheritdoc */
+    public function connectTo($mode)
+    {
+        $this->Lexer->addSpecialPattern('\{\{scratchpad>.+?\}\}', $mode, 'plugin_luxtools_scratchpad');
+    }
+
+    /** @inheritdoc */
+    public function handle($match, $state, $pos, Doku_Handler $handler)
+    {
+        global $INPUT;
+
+        // Do not allow the syntax in discussion plugin comments
+        if (!$this->getConf('allow_in_comments') && $INPUT->has('comment')) {
+            return false;
+        }
+
+        $match = substr($match, strlen('{{scratchpad>'), -2);
+        [$path,] = array_pad(explode('&', $match, 2), 2, '');
+
+        return [
+            'path' => trim((string)$path),
+        ];
+    }
+
+    /** @inheritdoc */
+    public function render($format, Doku_Renderer $renderer, $data)
+    {
+        if ($data === false) return false;
+        if (!is_array($data)) return false;
+
+        if ($format !== 'xhtml' && $format !== 'odt') return false;
+
+        // Always disable caching: the scratchpad is external to page revisions.
+        $renderer->nocache();
+
+        $rawPad = (string)($data['path'] ?? '');
+        if ($rawPad === '') {
+            $this->renderError($renderer, 'scratchpad_err_nopath');
+            return true;
+        }
+
+        $pathInfo = $this->getScratchpadPathInfoSafe($rawPad, $renderer);
+        if ($pathInfo === false) return true;
+
+        $filePath = (string)($pathInfo['path'] ?? '');
+        if ($filePath === '' || str_ends_with($filePath, '/')) {
+            $this->renderError($renderer, 'scratchpad_err_badpath');
+            return true;
+        }
+
+        // Never allow writing/reading within DokuWiki-controlled paths
+        if (Path::isWikiControlled(Path::cleanPath($filePath, false))) {
+            $this->renderError($renderer, 'error_outsidejail');
+            return true;
+        }
+
+        $text = '';
+        if (@is_file($filePath) && @is_readable($filePath)) {
+            $text = (string)io_readFile($filePath, false);
+        }
+
+        if ($format === 'odt') {
+            $renderer->cdata($text);
+            return true;
+        }
+
+        /** @var Doku_Renderer_xhtml $renderer */
+        $endpoint = DOKU_BASE . 'lib/plugins/luxtools/scratchpad.php';
+
+        global $ID;
+        $pageId = (string)$ID;
+        $canEdit = function_exists('auth_quickaclcheck') ? (auth_quickaclcheck($pageId) >= AUTH_EDIT) : false;
+
+        $renderer->doc .= '<div class="luxtools-plugin luxtools-scratchpad"'
+            . ' data-luxtools-scratchpad="1"'
+            . ' data-endpoint="' . hsc($endpoint) . '"'
+            . ' data-pad="' . hsc($rawPad) . '"'
+            . ' data-pageid="' . hsc($pageId) . '"'
+            . '>';
+
+        $renderer->doc .= '<div class="luxtools-scratchpad-bar">';
+        if ($canEdit) {
+            $label = (string)$this->getLang('scratchpad_edit');
+            if ($label === '') $label = 'Edit';
+            $renderer->doc .= '<a href="#" class="luxtools-scratchpad-edit" title="' . hsc($label) . '" aria-label="' . hsc($label) . '">✎</a>';
+        }
+        $renderer->doc .= '</div>';
+
+        $renderer->doc .= '<div class="luxtools-scratchpad-view">';
+        $renderer->doc .= $this->renderWikitextFragment($text);
+        $renderer->doc .= '</div>';
+
+        if ($canEdit) {
+            $renderer->doc .= '<div class="luxtools-scratchpad-editor" hidden>';
+            $renderer->doc .= '<textarea class="luxtools-scratchpad-text" rows="10" spellcheck="true"></textarea>';
+            $renderer->doc .= '<div class="luxtools-scratchpad-actions">'
+                . '<button type="button" class="button luxtools-scratchpad-save">' . hsc((string)$this->getLang('scratchpad_save') ?: 'Save') . '</button>'
+                . '<button type="button" class="button luxtools-scratchpad-cancel">' . hsc((string)$this->getLang('scratchpad_cancel') ?: 'Cancel') . '</button>'
+                . '<span class="luxtools-scratchpad-status" aria-live="polite"></span>'
+                . '</div>';
+            $renderer->doc .= '</div>';
+        }
+
+        $renderer->doc .= '</div>';
+        return true;
+    }
+
+    protected function renderWikitextFragment(string $text): string
+    {
+        // Render wikitext to XHTML and return it as a string
+        $info = ['cache' => false];
+        $instructions = p_get_instructions($text);
+        return (string)p_render('xhtml', $instructions, $info);
+    }
+
+    protected function renderError(Doku_Renderer $renderer, string $langKey): void
+    {
+        $msg = (string)$this->getLang($langKey);
+        if ($msg === '') $msg = $langKey;
+
+        if ($renderer instanceof Doku_Renderer_xhtml) {
+            $renderer->doc .= '<div class="luxtools-plugin luxtools-scratchpad"><div class="luxtools-scratchpad-error">'
+                . hsc($msg)
+                . '</div></div>';
+            return;
+        }
+
+        $renderer->cdata('[n/a: ' . $msg . ']');
+    }
+
+    /**
+    * Resolve a scratchpad alias to its file path using the configured scratchpad_paths setting.
+     *
+     * @param string $pad
+     * @param Doku_Renderer $renderer
+     * @return array|false
+     */
+    protected function getScratchpadPathInfoSafe(string $pad, Doku_Renderer $renderer)
+    {
+        try {
+            $map = new ScratchpadMap((string)$this->getConf('scratchpad_paths'));
+            return [
+                'path' => $map->resolve($pad),
+            ];
+        } catch (Exception $e) {
+            $this->renderError($renderer, 'scratchpad_err_unknown');
+            return false;
+        }
+    }
+}