Are there global variables or similar feature in mdbook

help
1

If i have a link i am using in multiple .md files in an mdbook, is there a way to store that link in a global variable and use it in several places in the book, so that if i need to change that link, i only change it in one place.

2

mdBook supports preprocessors and has a built-in one for including files. You could keep your links in a separate links.md file, i.e.:

[rust-lang]: https://www.rust-lang.org
[mdbook]: https://rust-lang.github.io/mdBook/index.html

and include it in the markdown files you need them:

[Rust][rust-lang] is a cool programming language and [mdBook][mdbook]
is a great tool for writing documentation!

{{#include links.md}}
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3

It's not working for me, also the .md files are all in the same directory. i think something maybe missing.

4

Sorry, I messed up the syntax in my example. Reference-links are in the form [Rust][rust-lang], not [Rust](rust-lang). Fixed the example. As to links.md being in the src directory, that shouldn't matter if you don't add it to SUMMARY.md as a chapter.

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