[hadrien01]

Jetbrains IDEs: Settings > Editor > Font > Enable ligatures

Sublime Text: Set "font_options" to "dlig". There are other settings to choose which character tables are allowed to use ligatures or not.

Visual Studio Code: Set "editor.fontLigatures" to "true". You can also put CSS font features to choose which ligatures you want to enable.

[crazygringo]

Thank you so much, I had no idea! Very helpful.