How do I join all selected lines into one line?

Explanation

In visual mode, pressing J joins all selected lines into a single line with spaces between them. This is the multi-line version of the normal J command.

How it works

• Select multiple lines with V and motions
• Press J to join them all into one line
• A space is added between each joined line
• Leading whitespace is removed from joined lines

Example

part one
part two
part three

Select all three lines with Vjj, press J:

part one part two part three

Tips

• gJ joins without adding spaces
• This is useful for un-wrapping paragraphs
• Works with any number of selected lines
• The cursor is placed at the first join point