[FIXED] How do you split and unsplit a window/view in Eclipse IDE?

Issue

How do you split a window/view in Eclipse IDE? I want to edit code while viewing the different code in the same file.

If there is a trick to open the same file twice, this might do, but I would rather just split the one current view instead of having two of the same which might get confusing.

Solution

This is possible with the menu items Window>Editor>Toggle Split Editor.

Current shortcut for splitting is:

Azerty keyboard:

• Ctrl + _ for split horizontally, and
• Ctrl + { for split vertically.

Qwerty US keyboard:

• Ctrl + Shift + - (accessing _) for split horizontally, and
• Ctrl + Shift + [ (accessing {) for split vertically.

MacOS - Qwerty US keyboard:

• ⌘ + Shift + - (accessing _) for split horizontally, and
• ⌘ + Shift + [ (accessing {) for split vertically.

On any other keyboard if a required key is unavailable (like { on a german Qwertz keyboard), the following generic approach may work:

• Alt + ASCII code + Ctrl then release Alt

Example: ASCII for '{' = 123, so press 'Alt', '1', '2', '3', 'Ctrl' and release 'Alt', effectively typing '{' while 'Ctrl' is pressed, to split vertically.

Example of vertical split:

PS:

• The menu items Window>Editor>Toggle Split Editor were added with Eclipse Luna 4.4 M4, as mentioned by Lars Vogel in "Split editor implemented in Eclipse M4 Luna"
• The split editor is one of the oldest and most upvoted Eclipse bug! Bug 8009
• The split editor functionality has been developed in Bug 378298, and will be available as of Eclipse Luna M4. The Note & Newsworthy of Eclipse Luna M4 will contain the announcement.

Answered By - VonC