How to add a new language for syntax highlighting in Notepad ?

Notepad supports adding syntax highlighting languages ​​through built-in or customized methods. First check whether the target language is included in the Language menu. If not, you can create a new language through Language → Define your language…, set the name, keyword, comment symbol and style and save it. You can also import .xml format UDL files shared by others to achieve rapid configuration. Finally, enter the file extension in the Ext. column to automatically highlight the corresponding suffix file, thereby achieving complete support for custom languages.

To add a new language for syntax highlighting in Notepad , you can either install a built-in supported language or define a custom one. Here's how to do both.

Check if the Language is Already Supported

Notepad supports many languages ​​by default. Before adding a new one, check if it's already available:

• Open Notepad
• Go to the Language menu
• Scroll through the list to see if your desired language is there (eg, Python, JavaScript, Ruby)
• If it appears but isn't assigned to your file type, you can manually select it from the menu

Add a Custom Language Using User-Defined Languages ​​(UDL)

If the language isn't built-in, you can create a custom syntax highlighter using UDL:

• Navigate to Language → Define your language…
• Click Define New… and give your language a name (eg, "MyLang")
• Use the tabs (Comment & Number, Keywords Lists, Styleing, etc.) to set up syntax rules
• Add keywords, comment symbols, operators, and choose colors/fonts for different elements
• Click Save & Close

Your new language will now appear in the Language menu.

Import an Existing UDL File

You can also import a pre-configured UDL file shared by others:

• Download a .xml file defining the language (from community forums or GitHub)
• In Notepad , go to Language → Define your language…
• Click Import… and select the downloaded .xml file
• Restart Notepad if needed

The imported language will be available in the Language menu.

Associate File Extensions Automatically

To make Notepad apply your language automatically:

• In Language → Define your language… , select your custom language
• Click Ext. and enter the file extension (eg, myl ) without a dot
• Files with that extension will now open with your syntax highlighting

Basically, Notepad lets you extend syntax highlighting via user-defined languages. Whether creating from scratch or importing, the UDL feature gives solid control over custom language support.

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