Unix systems use newlines (\n) to mark line
endings in text files. The MacOS uses carriage-returns
(\r). Windows uses a carriage-return followed by a
newline (\r\n). jEdit can read and write files in all
three formats.
The line separator used by the in-memory representation of file contents is always the newline character. When a file is being loaded, the line separator used in the file on disk is stored in a per-buffer property, and all line-endings are converted to newline characters for the in-memory representation. When the buffer is consequently saved, the value of the property replaces newline characters when the buffer is saved to disk.
There are several ways to change a buffer's line separator:
In the > dialog box. See the section called “The Buffer Options Dialog Box”.
By clicking the line separator indicator in the status bar. See the section called “The Status Bar”.
From the keyboard, if a keyboard shortcut has been assigned to the command in the pane of the > dialog box. By default, this command does not have a keyboard shortcut.
By default, new files are saved with your operating system's native line separator. This can be changed in the pane of the > dialog box; see the section called “The General Pane”. Note that changing this setting has no effect on existing files.