https://www.ilscipio.com/en/tags/compilers/ Recent content in Compilers on Ilscipio - Enterprise Commerce Experts Hugo en-US Tue, 01 Sep 2026 00:00:00 +0000 https://www.ilscipio.com/en/blog/add-custom-language-jetbrains/ Tue, 01 Sep 2026 00:00:00 +0000 https://www.ilscipio.com/en/blog/add-custom-language-jetbrains/ <p>I needed Freemarker support in IntelliJ and it did not exist. The built-in highlighting was wrong half the time, there was no completion, and navigating between templates was guessing. So I wrote a plugin. That was plugin number one. Twenty-one more followed.</p> <p>To add a custom language to a JetBrains IDE you need four things: a lexer, a parser, a PSI tree, and at least one useful feature on top. Everything else is optional but makes the plugin worth paying for.</p>