shithub: vdiff

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add line scrolling using up/down arrows

--- a/vdiff.c

+++ b/vdiff.c

@@ -341,6 +341,12 @@

 			case Kpgdown:

 				scroll(nlines);

 				break;

+			case Kup:

+				scroll(-1);

+				break;

+			case Kdown:

+				scroll(1);

+				break;

 			}

 			break;

 		}