# Updating GitHub syntax highlighting

**URL:** <https://internals.rust-lang.org/t/updating-github-syntax-highlighting/4009>\
**Category:** Uncategorized\
**Created:** [September 5, 2016, 11:43am UTC](https://internals.rust-lang.org/t/updating-github-syntax-highlighting/4009 "2016-09-05T11:43:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sanxiyn](https://sea2.discourse-cdn.com/flex002/user_avatar/internals.rust-lang.org/sanxiyn/32/8824_2.png) [@sanxiyn](https://internals.rust-lang.org/u/sanxiyn)\
**Post date:** [September 5, 2016, 11:43am UTC](https://internals.rust-lang.org/t/updating-github-syntax-highlighting/4009/1 "2016-09-05T11:43:48Z")

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What should be done to update Rust syntax highlighting on GitHub code viewer?

It would make sense to highlight “union” now.

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**Author:** ![stebalien](https://sea2.discourse-cdn.com/flex002/user_avatar/internals.rust-lang.org/stebalien/32/228_2.png) [@stebalien](https://internals.rust-lang.org/u/stebalien)\
**Post date:** [September 5, 2016, 1:19pm UTC](https://internals.rust-lang.org/t/updating-github-syntax-highlighting/4009/2 "2016-09-05T13:19:18Z")

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GitHub appears to use rust’s sublime syntax highlighting grammer: [https://github.com/rust-lang/sublime-rust/](https://github.com/rust-lang/sublime-rust/) (See [https://github.com/github/linguist/tree/master/vendor/grammars](https://github.com/github/linguist/tree/master/vendor/grammars))

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**Author:** ![system](https://sea2.discourse-cdn.com/flex002/user_avatar/internals.rust-lang.org/system/32/14092_2.png) [@system](https://internals.rust-lang.org/u/system)\
**Post date:** [March 25, 2019, 8:26am UTC](https://internals.rust-lang.org/t/updating-github-syntax-highlighting/4009/3 "2019-03-25T08:26:52Z")

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