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LightEdit mode

Last modified: 16 January 2023

When you need to edit just one file without creating or loading the whole project in RubyMine, you can use the LightEdit mode.

Keep in mind that the LightEdit mode works as a text-like editor, and it doesn't support the usual IDE editor features such as code completion, or code navigation. However, you can navigate to a specific line of code (Ctrl+G), fold or unfold parts of code, check, and change file encoding.

LightEdit mode

Open a file in the LightEdit mode

You can use several ways to open a file in the LightEdit mode.

note

When you open a file from the welcome screen or from the local file system, it opens in a temporary project in the IDE not in the LightEdit mode, and you can use all the available RubyMine features.

Open a file from the local file system

  1. Locate the file you need in your file system, right click it and select Open With.

  2. Select the version of RubyMine with which you want to open a file and click Open.

Open a file from the command line

  • Depending on your OS, open the file from the command line:

    rubymine.bat -e myfile.txt

    You can find the executable for running RubyMine in the installation directory under bin. To use this executable as the command-line launcher, add it to your system PATH as described in Command-line interface.

note

When you open a file that doesn't belong to any project with the idea command, RubyMine displays a dialog where you can choose whether to stay in the LightEdit mode or open the file in a project.

Open a file inside the opened project

You can open a non-project file in the already opened project.

  1. If you don't have the RubyMine launcher configured, you need to configure it before you can open a file.

  2. Depending on your OS, open the file adding the -e command before the name of your file.

    For example, for macOS the syntax would look as follows:

    rubymine -e myfile.txt

Open and edit a file with the wait switch

You can interrupt a process in the command line and put terminal on hold until you're done editing a file in the LightEdit mode. For example, when you work in the command line and run a commit process to Git, you can pause the terminal and use a text editor in the LightEdit mode to quickly write a commit message.

note

If you have a Toolbox installation of RubyMine, ensure that you have installed RubyMine from the Toolbox 1.9 version. If you have a stand-alone installation of RubyMine, create a command-line launcher (Tools | Create Command-line Launcher) first.

  1. Depending on your OS, open the file adding the -e and -w commands before the name of your file.

    rubymine.bat -e -w myfile.txt

    You can find the executable for running RubyMine in the installation directory under bin. To use this executable as the command-line launcher, add it to your system PATH as described in Command-line interface.

    RubyMine opens the file in the LightEdit mode, and displays a notification indicating that the command line is waiting for the opened file to close.

    the Command line waiting notification

  2. Click one of the notification's options or close the file to release the command line.

Work with code in the LightEdit mode

Even though the LightEdit mode doesn't support all of the RubyMine editor coding assistance, you can still use basic editing features and basic menu options.

  • Use the main menu to open recent files, show the line numbers, whitespaces, extend the code selection, and so on.

    When you select File | Open, RubyMine opens the Open File or Project dialog where you can quickly navigate to the opened file in the project's root directory. Click the Select opened file icon on the toolbar. Note that for macOS, the native dialog will open.

    When you edit a file, the blue color indication on the tab shows that the file content was changed.

  • When external changes are made to the file you are working on, you can update it by selecting File | Reload from Disk from the main menu.

  • Use the context menu for pasting or folding your code as well as switching to column selection mode.

  • Use the status bar to go to the line you need, check the VCS, or toggle the Autosave mode.

Turn on autosave

Exit the LightEdit mode

You can quit the LightEdit mode and switch from editing a single file to working on the entire project. To do so, use one of the following ways:

Status bar

On the status bar of the LightEdit mode, click Access full IDE and from the list of options, select how you want to proceed such as open the current file in the project, open the recent project, or open the new one.

Access full IDE
Find action window

Press Alt+Enter and select Open file in project.

Main menu

Select File | Open File in Project from the main menu.