Method deleteToLineStart

src/utils/Cursor.ts:855–869

()

  }

  deleteToLineStart(): { cursor: Cursor; killed: string } {
    // If cursor is right after a newline (at start of line), delete just that
    // newline — symmetric with deleteToLineEnd's newline handling. This lets
    // repeated ctrl+u clear across lines.
    if (this.offset > 0 && this.text[this.offset - 1] === '\n') {
      return { cursor: this.left().modifyText(this), killed: '\n' }
    }

    // Use startOfLine() so that at column 0 of a wrapped visual line,
    // the cursor moves to the previous visual line's start instead of
    // getting stuck.
    const startCursor = this.startOfLine()
    const killed = this.text.slice(startCursor.offset, this.offset)
    return { cursor: startCursor.modifyText(this), killed }
  }

  deleteToLineEnd(): { cursor: Cursor; killed: string } {
    // If cursor is on a newline character, delete just that character