Early Access Program

RubyMine 2021.1 EAP4 is available!

In this post, you’ll learn about RubyMine’s new features for working with style sheets, URLs, and the JSON lines format, as well as several usability improvements.

Here are the main highlights. Please try them out and share your feedback with us.


Important! RubyMine EAP builds are not fully tested and might be unstable.

Selector specificity for style sheets

In style sheets, you can now check the specificity of your selectors. Just hover over a selector, or focus on it and press F1 (Ctrl+Q), to invoke the Documentation popup with the information.

Specificity for style sheets

Inspection for HTTP usages

We’ve added a new inspection that highlights http:// protocol usages in strings and offers a quick-fix to change them to https://.

This inspection is enabled by default. You can add any URLs to the list of ignored URLs. Alternatively, you can disable the inspection for your whole project, or parts of it, in Preferences/Settings | Editor | Inspections | Security | Link with unencrypted protocol.

HTTP inspection

Support for JSON Lines

RubyMine now properly supports the JSON Lines text format. The IDE will recognize .jsonl, .jslines, .ldjson, and .ndjson file types.

Files that follow this format contain several lines, and each new line is a JSON object separated by a newline character. Commas aren’t required at either the beginning or end of lines, and there is no need to enclose the entirety of the file contents in brackets or braces.

JSON lines support

User experience improvements

Quick access to recent projects on Windows

This one is for Windows users. You can now open your recent projects by right-clicking on the RubyMine icon on the taskbar or on the Start menu.

Recent projects on Windows

Improved tooltip readability

RubyMine now shows tooltips one after another to prevent them from overlapping.

Improved accessibility

We are continually working to make our IDE more accessible to all users.

This EAP version adds more labels to UI elements on the welcome screen, in the Project Structure view, and VCS log. These elements, as well as gutter icons, are now read out correctly when a screen reader is enabled.

We are also working on better accessibility support for macOS users.

Early Access Program key facts

  • The EAP builds of RubyMine are free to use. Each will expire in 30 days.
  • This is pre-release software, and it might not work as intended.
  • You can install the EAP version alongside a stable version of RubyMine.
  • EAP versions of RubyMine report statistics by default. These statistics help us improve the user experience. You can opt out by changing the settings in Preferences/Settings | Appearance & Behavior | System Settings | Data Sharing.
  • EAP builds have their own documentation as well.

Join the Early Access Program

You are welcome to download the latest EAP build from our website or via the Toolbox app. The full list of closed tickets in this EAP build is in the release notes.

To learn about the newest features as they come out, please follow RubyMine on Twitter. We post product news and tips several times a week.

As always, we encourage you to share your thoughts in the comments below and to create and vote for features in the issue tracker.

Happy Developing!
The RubyMine team

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