Moves the given iter backward by one display (wrapped) line.
A display line is different from a paragraph. Paragraphs are separated by newlines or other paragraph separator characters. Display lines are created by line-wrapping a paragraph. If wrapping is turned off, display lines and paragraphs will be the same. Display lines are divided differently for each view, since they depend on the view’s width; paragraphs are the same in all views, since they depend on the contents of the TextBuffer.
| this |
a TextView |
| iter |
a TextIter |
|
true if |