Method deleteTextRect

texteditor/buffer.go:722–735

deleteTextRect deletes rectangular region of text between start, end defining the upper-left and lower-right corners of a rectangle. Fails if st.Ch >= ed.Ch. Sets the timestamp on resulting text.Edit to now. An Undo record is automatically saved depending on Undo.Off setting.

(st, ed lexer.Pos, signal bool)

// Fails if st.Ch >= ed.Ch. Sets the timestamp on resulting text.Edit to now.
// An Undo record is automatically saved depending on Undo.Off setting.
func (tb *Buffer) deleteTextRect(st, ed lexer.Pos, signal bool) *text.Edit {
	tb.FileModCheck()
	tbe := tb.Lines.DeleteTextRect(st, ed)
	if tbe == nil {
		return tbe
	}
	if signal {
		tb.signalMods()
	}
	if tb.Autosave {
		go tb.autoSave()
	}
	return tbe
}

// insertText is the primary method for inserting text into the buffer.
// It inserts new text at given starting position, optionally signaling