File sash-ed-line-marking.diff of Package sash

Index: sash-3.7/cmd_ed.c
===================================================================
--- sash-3.7.orig/cmd_ed.c
+++ sash-3.7/cmd_ed.c
@@ -247,7 +247,7 @@ doCommands(void)
 				while (isBlank(*cp))
 					cp++;
 
-				if ((*cp < 'a') || (*cp > 'a') || cp[1])
+				if ((*cp < 'a') || (*cp > 'z') || cp[1])
 				{
 					fprintf(stderr, "Bad mark name\n");
 					break;