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[#]: subject: "Vim 9.0 is Here With a New Script Language Promising Performance Boost"
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[#]: via: "https://news.itsfoss.com/vim-9-0-release/"
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[#]: author: "Ankush Das https://news.itsfoss.com/author/ankush/"
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[#]: collector: "lkxed"
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[#]: translator: " "
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[#]: reviewer: " "
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[#]: publisher: " "
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[#]: url: " "
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Vim 9.0 is Here With a New Script Language Promising Performance Boost
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======
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Vim 9.0 update brings a new script language, promises a performance boost, and gets closer to common programming languages.
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![][1]
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Vim, the terminal text editor is back with a major update.
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The Vim 9.0 release includes several tiny improvements along with a new script language (Vim9 script).
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Here, let me highlight the key changes.
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### Vim 9.0: What’s New?
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Vim 9.0 is a significant upgrade after almost three years. And, the release announcement mentions that Vim 9.0 is more reliable than any before, which is a good thing to hear.
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Some of the refinements include:
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#### A New Vim9 Script
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Vim script always ensures backwards compatibility, but that changes a bit with this update.
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The backwards compatibility always comes with slower execution performance. So, with the Vim9 script, they aim to drastically improve performance.
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The release note explains:
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> This is accomplished by compiling commands into instructions that can be efficiently executed. An increase in execution speed of 10 to 100 times can be expected.
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Sounds incredible, isn’t it?
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However, what’s the catch for these performance improvements? Here’s what they say:
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> The performance improvements can only be achieved by not being 100% backwards compatible. For example, making function arguments available by creating an “a:” dictionary involves quite a lot of overhead. In a Vim9 function this dictionary is not available. Other differences are more subtle, such as how errors are handled.
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So, you no longer get 100% backwards compatibility, but the legacy scripts should work as usual.
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In addition to the performance improvements, the new script language also aims to get closer to commonly used programming languages, including JavaScript, TypeScript, and Java.
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The developers also plan to add support for **classes** in the script language.
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You can learn more about the new script in the [official help page][2].
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#### New Features
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You will also find some technical feature additions like:
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* Function must be defined with def, if you want to benefit from the speedup.
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* The arguments and return types must be specificed.
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* Line continuation does not require using a backlash.
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* It now simpler to split large scripts. You can use export to make functions/variables available to other scripts, and import to use exported items.
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* Comments now start with # replacing double quote syntax.
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In either case, you can always refer to the [official announcement][3] to explore all the technical details with the update.
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### Download Vim 9.0
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If you are going to try Vim for the first, you might want to check out our [Vim vs Nano comparison article][4] (keeping in mind the changes for this release).
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You can download the latest version directly from the [official website][5]. Packages should be available for Debian-based/Ubuntu-based systems. For other Linux distributions, you might want to explore the documentations.
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You can build it from sources and apply the latest patches as well.
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--------------------------------------------------------------------------------
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via: https://news.itsfoss.com/vim-9-0-release/
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作者：[Ankush Das][a]
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选题：[lkxed][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://news.itsfoss.com/author/ankush/
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[b]: https://github.com/lkxed
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[1]: https://news.itsfoss.com/wp-content/uploads/2022/06/vim-9.0.jpg
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[2]: https://vimhelp.org/vim9.txt.html
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[3]: https://www.vim.org/vim90.php
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[4]: https://itsfoss.com/vim-vs-nano/
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[5]: https://www.vim.org/download.php
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