diff --git a/etc/init.shy b/etc/init.shy
index ae030a44..03429699 100644
--- a/etc/init.shy
+++ b/etc/init.shy
@@ -3,6 +3,5 @@ source etc/local.shy
 ~file1
 	history load etc/history.txt
 
-~shell1
 	alias import nfs
 	alias send send
diff --git a/src/contexts/ctx.go b/src/contexts/ctx.go
index a2e761df..68ca75d0 100644
--- a/src/contexts/ctx.go
+++ b/src/contexts/ctx.go
@@ -2454,7 +2454,7 @@ var Index = &Context{Name: "ctx", Help: "模块中心",
 							list := []string{}
 							j := 0
 							for i := 1; i < len(arg); i++ {
-								if arg[i] == "_" && j < len(args) {
+								if arg[i] == "_" && m.Assert(j < len(args)) {
 									list = append(list, args[j])
 									j++
 									continue
diff --git a/src/contexts/nfs/nfs.go b/src/contexts/nfs/nfs.go
index bc4f1cf7..0888d8e2 100644
--- a/src/contexts/nfs/nfs.go
+++ b/src/contexts/nfs/nfs.go
@@ -493,6 +493,7 @@ func (nfs *NFS) Read(p []byte) (n int, err error) { // {{{
 				}
 
 			case termbox.KeyCtrlI:
+				break
 				if len(tab) == 0 {
 					tabi = 0
 					prefix := string(buf)