set_highlight_current_line
Description:
If highlight is true the current line will be highlighted.
Parameters:
| this | 
           a SourceView.  | 
      
| highlight | 
           whether to highlight the current line.  | 
      
If highlight is true the current line will be highlighted.
| this | 
           a SourceView.  | 
      
| highlight | 
           whether to highlight the current line.  |