Control-U key deletes whole line

While editing a boot parameter, the user can now use the Control-U
key to delete the whole existing line and start over.

Patch is originally from Randolph Chung <rchung42@gmail.com> from July 2007

1 files changed, 11 insertions, 0 deletions

diff --git a/ipl/lib.c b/ipl/lib.c
index d417197..f529ee4 100644
--- a/ipl/lib.c
+++ b/ipl/lib.c
@@ -262,6 +262,17 @@ char *enter_text(char *txt, int maxchars)
 		putchar(' ');
 		putchar(c);
 	    }
+	} else if (c == 21)
+	{			/* CTRL-U */
+	    while (pos)
+	    {
+		pos--;
+		c='\b';
+		putchar(c);
+		putchar(' ');
+		putchar(c);
+	    }
+	    txt[0] = 0;
 	} else if ((pos < maxchars) && c >= ' ')
 	{
 	    txt[pos] = c;