commit b2cd5e069649931daeb8619734b6e8c8dc697819
from: Omar Polo <op@omarpolo.com>
date: Sat Mar 06 16:11:39 2021 UTC

implement & fix cursor-related functions

commit - 1d08c280e4fb59f78de88a09aa7932e3013e1ce7
commit + b2cd5e069649931daeb8619734b6e8c8dc697819
blob - a32b231dcdacc9ff63d4d65cc5b19decb370585f
blob + d3d55e98117cd34b9eadb7368ffa5eddd0d89571
--- ui.c
+++ ui.c
@@ -179,18 +179,28 @@ cmd_next_line(int k)
 	struct tab	*tab;
 
 	tab = current_tab();
-	tab->s->curs_y = MIN(LINES, tab->s->curs_y-1);
+	tab->s->curs_y = MIN(LINES-1, tab->s->curs_y+1);
 	move(tab->s->curs_y, tab->s->curs_x);
 }
 
 static void
 cmd_forward_char(int k)
 {
+	struct tab	*tab;
+
+	tab = current_tab();
+	tab->s->curs_x = MIN(COLS-1, tab->s->curs_x+1);
+	move(tab->s->curs_y, tab->s->curs_x);
 }
 
 static void
 cmd_backward_char(int k)
 {
+	struct tab	*tab;
+
+	tab = current_tab();
+	tab->s->curs_x = MAX(0, tab->s->curs_x-1);
+	move(tab->s->curs_y, tab->s->curs_x);
 }
 
 static void