fixing deadloop when input is filtered

Author: chzyer

operation.go

@@ -109,10 +109,12 @@ func (o *Operation) ioloop() {
 		keepInSearchMode := false
 		keepInCompleteMode := false
 		r := o.t.ReadRune()
+
 		if o.GetConfig().FuncFilterInputRune != nil {
 			var process bool
 			r, process = o.GetConfig().FuncFilterInputRune(r)
 			if !process {
+				o.t.KickRead()
 				o.buf.Refresh(nil) // to refresh the line
 				continue           // ignore this rune
 			}

runebuf.go

@@ -35,7 +35,7 @@ type RuneBuffer struct {
 	sync.Mutex
 }
 
-func (r* RuneBuffer) pushKill(text []rune) {
+func (r *RuneBuffer) pushKill(text []rune) {
 	r.lastKill = append([]rune{}, text...)
 }
 
@@ -221,7 +221,7 @@ func (r *RuneBuffer) DeleteWord() {
 	}
 	for i := init + 1; i < len(r.buf); i++ {
 		if !IsWordBreak(r.buf[i]) && IsWordBreak(r.buf[i-1]) {
-			r.pushKill(r.buf[r.idx:i-1])
+			r.pushKill(r.buf[r.idx : i-1])
 			r.Refresh(func() {
 				r.buf = append(r.buf[:r.idx], r.buf[i-1:]...)
 			})
@@ -350,7 +350,7 @@ func (r *RuneBuffer) Yank() {
 		return
 	}
 	r.Refresh(func() {
-		buf := make([]rune, 0, len(r.buf) + len(r.lastKill))
+		buf := make([]rune, 0, len(r.buf)+len(r.lastKill))
 		buf = append(buf, r.buf[:r.idx]...)
 		buf = append(buf, r.lastKill...)
 		buf = append(buf, r.buf[r.idx:]...)