engine: reject stale dictionary results

strans.c

@@ -6,6 +6,7 @@ static int visible = 0;
 static void *activeowner;
 static int activecap;
 static Caret caret;
+static u32int dictseq;
 static void dictqmap(Im*);
 static void dictqjp(Im*);
 static void backjp(Im*);
@@ -34,6 +35,7 @@ int nlang = nelem(langs);
 static void
 clearkouho(void)
 {
+	dictseq++;
 	im.nkouho = 0;
 	im.sel = -1;
 }
@@ -147,6 +149,7 @@ dictsend(Im *im, Str *key)
 
 	req.key = *key;
 	req.lang = im->l->lang;
+	req.seq = dictseq;
 	if(isjp(im))
 		jpreading(im, &req.pre);
 	else
@@ -453,6 +456,7 @@ searchlookup(int lang, Str *key, Dictres *res)
 	req.key = *key;
 	req.pre = req.key;
 	req.lang = lang;
+	req.seq = 0;
 	dictlookup(&req, res);
 }
 
@@ -769,6 +773,7 @@ init(void)
 	memset(&caret, 0, sizeof caret);
 	activeowner = nil;
 	activecap = 0;
+	dictseq = 0;
 	visible = 0;
 }
 
@@ -833,7 +838,7 @@ dictresult(Dictres *res)
 	Str pre;
 
 	impre(&pre);
-	if(search.lang || res->lang != im.l->lang ||
+	if(search.lang || res->seq != dictseq || res->lang != im.l->lang ||
 	   scmp(&res->key, &pre) != 0)
 		return;
 	setkouho(res);