How do I fix auto-completion not working in Sublime Text?
Jun 13, 2025 am 12:06 AM1. Make sure that automatic completion is enabled: Check the user settings in Preferences > Settings, and confirm "auto_complete": true; 2. Make sure that there is complete content in the file: Sublime's default automatic completion depends on existing text for suggestions, and you need to manually enter duplicate content to trigger; 3. Install Package Control and language plug-ins: such as SublimeJEDI or tern to get smarter code suggestions; 4. Restart or reset settings: Try restarting the software, delete the settings file, or run safe mode to troubleshoot problems. The above steps can be checked and fixed in the Sublime Text in sequence.
Auto-complete in Sublime Text is super handy, and when it stops working, it can really slow you down. The good news? It's usually something simple — either a setting got flipped, or the built-in auto-complete just isn't doing what you expect. Let's walk through some of the most common fixes.
Check if Auto-Completion is Enabled
First things first — make sure auto-complete is actually turned on. Sublime Text has this feature enabled by default, but sometimes settings get changed without you realizing.
Here's how to double-check:
Go to Preferences > Settings
-
Look in your user settings (the right side) and make sure you have:
"auto_complete": true
If it's missing or set to false
, add or change it. Also check for any conflicting plugins or custom key bindings that might interfere with the standard behavior.
Make Sure There's Content to Complete
Sublime's native auto-complete relies on what's already in your file (and open buffers) to suggest matches. If you're typing something completely new, there won't be anything to pull from.
Try this:
- Type a variable or function name somewhere else in the file
- Start typing the same name again — Sublime should suggest it
This kind of basic auto-complete is pretty limited compared to full IDEs, so if you're expecting smart suggestions based on language syntax or libraries, you'll need more than the default setup.
Try Installing Package Control and Language-Specific Completions
If you want smarter auto-complete — like code suggestions based on the programming language you're using — you'll probably want to install Package Control (if you haven't already), then grab something like SublimeJEDI for Python or tern for JavaScript.
Here's a quick path forward:
- Install Package Control
- Use it to install a language-specific plugin
- These often come with their own auto-complete features or integrate with LSP (Language Server Protocol)
These tools give you much better suggestions, including function signatures, object properties, and more.
Restart Sublime or Reset Settings
If none of the above works, try restarting Sublime Text — sometimes that's all it takes. If the issue persists, consider resetting your settings to default by deleting or renaming your Preferences.sublime-settings
file (make a backup first).
Also, try running Sublime in safe mode ( subl --safe-mode
from the terminal) to see if any third-party packages are causing the problem.
That's about it. Fixing auto-complete issues in Sublime Text usually comes down to checking a few core settings and knowing whether you're relying on basic completion or a more advanced package. Doesn't always take much to get it working again.
The above is the detailed content of How do I fix auto-completion not working in Sublime Text?. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undress AI Tool
Undress images for free

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

1. Make sure that automatic completion is enabled: Check the user settings in Preferences>Settings and confirm "auto_complete": true; 2. Make sure that there is complete content in the file: Sublime's default automatic completion depends on existing text for suggestions, and it is necessary to manually enter duplicate content to trigger; 3. Install PackageControl and language plug-ins: such as SublimeJEDI or tern to obtain smarter code suggestions; 4. Restart or reset settings: Try restarting the software, delete the settings file, or run safe mode to troubleshoot problems. The above steps can be checked and fixed in the SublimeText that automatically completes failures.

Use the "GotoAnything" function of SublimeText to quickly jump to a specific file. The main shortcut keys are Ctrl P (Windows/Linux) or Cmd P (Mac). Enter some file names to fuzzy match and open the file; 1. Use the @ symbol to jump through function or class name within the file; 2. Use: Added line numbers to jump directly to the specified line, suitable for debugging and error positioning.

Yes, you can install PackageControl in SublimeText through the following steps: 1. Open the console and use the shortcut key Ctrl ` or menu View>ShowConsole; 2. Paste the installation code to the console, the code content is importurllib.request,os,hashlib;h='2915d1851351e5ee549c20394736b442' '8bc59f460fa1548d1514676163dafc88';pf='PackageControl.sublime-package';ipp=subli

Solutions to slow startup of SublimeText include: 1. Uninstall uncommon plug-ins and enter safe mode to troubleshoot plug-ins; 2. Simplify project configuration and avoid loading large directories; 3. Clear cache or reset user settings; 4. Use SSD and close background programs to improve system resources. Due to factors such as plug-in conflicts, large-scale project loading, cache exceptions and hardware performance, it is recommended to troubleshoot the above problems in turn to optimize startup efficiency.

The most likely cause of the problem is that the build system is misconfigured or the program execution is too fast, so the output cannot be displayed. First check whether Tools>BuildSystem has selected the correct language (such as Python, C, etc.). If you use custom configuration, you need to verify that the command syntax is correct and test whether there is output through print("Hello"); secondly, if the program runs too quickly, you can add input("PressEntertoexit...") at the end of the script or modify the .sublime-build file to add pause commands such as "cmd":["s

SublimeText can implement the "jump to definition" function by installing the CTags plugin. First make sure that PackageControl is installed. If it is not installed, the installation will be completed through the official guide; then select "PackageControl:InstallPackage" through the command panel (Ctrl Shift P or Cmd Shift P) to search and install the CTags plug-in; then you need to install the ExuberantCtags or UniversalCtags tool, run ctags-R in the project root directory. Generate tags file; finally place the cursor on the target symbol and use the shortcut key Ctrl Shift Down

SublimeText can run linter or formatter through a custom build system. 1. Create .sublime-build file and configure commands, such as running Prettier with npxprettier; 2. Create multiple build systems for different tools or languages; 3. Use similar methods to configure ESLint and other linters to ensure that corresponding tools are installed and commands are adjusted; 4. Automatic formatting is achieved through plug-ins or scripts, or manually bind shortcut keys to perform formatting and saving operations.

SublimeText will not be updated automatically and requires manual operation. 1. First visit the official website sublimetext.com to view the latest version number and confirm whether the current installed version is too old; 2. View the local version through the Help>AboutSublimeText menu and compare it; 3. Backup settings before update: Enter Preferences>BrowsePackages to copy the Packages folder or use the PackageControl synchronization function; 4. After downloading the new version, operations are based on different systems: Windows run the installer, macOS drag and drop to replace the application, Linux is decompressed to the original directory; 5. Check after the update is completed
