Add support for extension settings passed to markdown-it-pandoc

.gitignore

@@ -6,3 +6,4 @@ try
 build
 public/katex/
 public/paged.polyfill.js
+public/highlight.js

MANUAL.md

@@ -70,9 +70,14 @@ If the directory does not exist, you can create it.
 
 ## Settings
 
-If you put a `settings.yaml` file in the data directory, PanWriter will read it on startup. Possible fields are currently only:
+If you put a `settings.yaml` file in the data directory, PanWriter will read it on startup. Available settings are:
 
-    autoUpdateApp: true
+    autoUpdateApp: true  # whether to automatically check for and install updates
+    extensions:          # optional: configure markdown-it extensions
+      some-extension: true
+      other-extension: false
+
+For available extension options and their effects, please refer to the [markdown-it-pandoc documentation](https://github.com/mb21/markdown-it-pandoc#readme).
 
 ## Default CSS and YAML
 

electron/main.ts

@@ -84,6 +84,10 @@ const createWindow = async (filePath?: string, toImport=false, wasCreatedOnStart
     } else {
       ipc.sendMessage(win, { type: 'loadSettings', settings })
     }
+  } else {
+    const settings = await settingsPromise
+    await windowReady
+    ipc.sendMessage(win, { type: 'loadSettings', settings })
   }
   await windowReady
   ipc.sendPlatform(win)

electron/settings.ts

@@ -7,8 +7,11 @@ export const loadSettings = async (): Promise<Settings> => {
 }
 
 const parseSettings = (data: Record<string, unknown> = {}): Settings => {
-  const { autoUpdateApp } = data
+  const { autoUpdateApp, extensions } = data
   return {
-    autoUpdateApp: autoUpdateApp === undefined ? defaultSettings.autoUpdateApp : !!autoUpdateApp
+    autoUpdateApp: autoUpdateApp === undefined ? defaultSettings.autoUpdateApp : !!autoUpdateApp,
+    extensions: typeof extensions === 'object' && extensions !== null 
+      ? extensions as Record<string, boolean>
+      : defaultSettings.extensions
   }
 }