Vim on Arch: /etc/vimrc can remap keys but not turn off syntax highlighting

When using Vim on Arch Linux, you may come across a situation where you want to remap certain keys but also turn off syntax highlighting. However, you might notice that the /etc/vimrc file can remap keys, but it doesn't have an option to disable syntax highlighting. In this article, we will explore why this limitation exists and provide alternative solutions to achieve the desired outcome.

Understanding Vim and /etc/vimrc

Vim is a powerful text editor that comes pre-installed on Arch Linux. It offers extensive customization options through configuration files, including /etc/vimrc. This file is a system-wide Vim configuration file that applies settings to all users on the system.

By default, Vim enables syntax highlighting, which colorizes different parts of the text based on the programming language being used. While this feature can be helpful, there may be situations where you prefer to disable it, such as when working with plain text files or for personal preference.

The Limitation of /etc/vimrc

When you open the /etc/vimrc file, you'll notice that it allows you to define custom key mappings and other settings. However, there is no direct option to disable syntax highlighting. This is because the /etc/vimrc file is primarily intended for system-wide settings and not individual user preferences.

Disabling syntax highlighting is considered a user-specific preference and can be achieved through the user's own .vimrc file, which is located in their home directory. This file takes precedence over the system-wide configuration and allows users to customize Vim according to their needs.

Alternative Solutions

If you want to disable syntax highlighting for your user account, follow these steps:

1. Create or open the .vimrc file in your home directory using the following command:

vim ~/.vimrc

2. Once inside the file, add the following line to turn off syntax highlighting:

syntax off

3. Save and exit the file by pressing Esc, followed by :wq.

Now, when you launch Vim, syntax highlighting will be disabled. You can always modify the .vimrc file to enable syntax highlighting again by changing the line to syntax on.

Additionally, you can use plugins or specific file extensions to control syntax highlighting on a per-file basis. Vim supports various plugins that provide advanced syntax highlighting options and allow you to define custom rules for specific file types.

One popular plugin is vim-polyglot. It enhances Vim's default syntax highlighting by supporting a wide range of programming languages and file types. You can install this plugin using a plugin manager like vim-plug or Vundle.

Conclusion

While the /etc/vimrc file on Arch Linux doesn't provide a direct option to disable syntax highlighting, you can achieve this by creating or modifying the .vimrc file in your home directory. This user-specific configuration file allows you to customize Vim according to your preferences, including turning off syntax highlighting. Additionally, you can explore plugins like vim-polyglot to enhance Vim's syntax highlighting capabilities for specific file types.

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