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ktrans: simplify kbdtap read loop

we were not handling multi null delimted messages
with one read. This makes us a bit more uniform to
other handling on the system as well ... something about clever
code.

--- a/sys/src/cmd/ktrans/main.c

+++ b/sys/src/cmd/ktrans/main.c

@@ -696,7 +696,7 @@

 {

 	char m[Msgsize];

 	char buf[128];

-	char *p, *e;

+	char *p;

 	int n;

 	threadsetname("kbdtap");

@@ -705,7 +705,7 @@

 		n = read(kbdin, buf, sizeof buf);

 		if(n < 0)

 			break;

-		for(p = buf; p < buf+n;){

+		for(p = buf; p < buf+n; p += strlen(p) + 1){

 			switch(*p){

 			case 'c': case 'k': case 'K':

 			case 'z':

@@ -713,10 +713,7 @@

 			default:

 				goto Drop;

 			}

-			*m = *p++;

-			e = utfecpy(m+1, m + Msgsize - 1, p);

-			p += e - m;

-			p++;

+			strcpy(m, p);

 			if(send(input, m) == -1)

 				return;

 		}

-- 

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