fix enum abuse

amends 9c86ec344.

S_FIND was for the sync record status field. it has no business in the
sync vars status fields. its value coincided with ST_SELECTED, which
luckily only means that we always tried to match up TUIDs even if there
was nothing to do.

the need for TUID matching arises in two mostly independent
circumstances, so add two separate flags ST_FIND_{OLD,NEW}.

src/sync.c

@@ -99,7 +99,6 @@ make_flags( int flags, char *buf )
 #define S_EXPIRE       (1<<5)
 #define S_NEXPIRE      (1<<6)
 #define S_EXP_S        (1<<7)
-#define S_FIND         (1<<8)
 
 #define mvBit(in,ib,ob) ((unsigned char)(((unsigned)in) * (ob) / (ib)))
 
@@ -203,16 +202,17 @@ static int check_cancel( sync_vars_t *svars );
 */
 
 #define ST_LOADED          (1<<0)
-#define ST_SENT_NEW        (1<<1)
-#define ST_FOUND_NEW       (1<<2)
-#define ST_SENT_FLAGS      (1<<3)
-#define ST_SENT_TRASH      (1<<4)
-#define ST_CLOSED          (1<<5)
-#define ST_SENT_CANCEL     (1<<6)
-#define ST_CANCELED        (1<<7)
-#define ST_SELECTED        (1<<8)
-
-#define ST_DID_EXPUNGE     (1<<16)
+#define ST_FIND_OLD        (1<<1)
+#define ST_SENT_NEW        (1<<2)
+#define ST_FIND_NEW        (1<<3)
+#define ST_FOUND_NEW       (1<<4)
+#define ST_SENT_FLAGS      (1<<5)
+#define ST_SENT_TRASH      (1<<6)
+#define ST_CLOSED          (1<<7)
+#define ST_SENT_CANCEL     (1<<8)
+#define ST_CANCELED        (1<<9)
+#define ST_SELECTED        (1<<10)
+#define ST_DID_EXPUNGE     (1<<11)
 
 
 static void
@@ -970,9 +970,9 @@ box_selected( int sts, void *aux )
 				opts[S] |= OPEN_OLD|OPEN_FLAGS;
 			if (srec->tuid[0]) {
 				if (srec->uid[M] == -2)
-					opts[M] |= OPEN_NEW|OPEN_FIND, svars->state[M] |= S_FIND;
+					opts[M] |= OPEN_NEW|OPEN_FIND, svars->state[M] |= ST_FIND_OLD;
 				else if (srec->uid[S] == -2)
-					opts[S] |= OPEN_NEW|OPEN_FIND, svars->state[S] |= S_FIND;
+					opts[S] |= OPEN_NEW|OPEN_FIND, svars->state[S] |= ST_FIND_OLD;
 			}
 		}
 	svars->drv[M]->prepare_opts( ctx[M], opts[M] );
@@ -1046,8 +1046,7 @@ box_loaded( int sts, void *aux )
 	svars->state[t] |= ST_LOADED;
 	info( "%s: %d messages, %d recent\n", str_ms[t], svars->ctx[t]->count, svars->ctx[t]->recent );
 
-	if (svars->state[t] & S_FIND) {
-		svars->state[t] &= ~S_FIND;
+	if (svars->state[t] & ST_FIND_OLD) {
 		debug( "matching previously copied messages on %s\n", str_ms[t] );
 		match_tuids( svars, t );
 	}
@@ -1393,7 +1392,7 @@ msg_copied( int sts, int uid, copy_vars_t *vars )
 	switch (sts) {
 	case SYNC_OK:
 		if (uid < 0)
-			svars->state[t] |= S_FIND;
+			svars->state[t] |= ST_FIND_NEW;
 		msg_copied_p2( svars, vars->srec, t, vars->msg, uid );
 		break;
 	case SYNC_NOGOOD:
@@ -1440,7 +1439,7 @@ msgs_copied( sync_vars_t *svars, int t )
 	if (!(svars->state[t] & ST_SENT_NEW) || svars->new_done[t] < svars->new_total[t])
 		return;
 
-	if (svars->state[t] & S_FIND) {
+	if (svars->state[t] & ST_FIND_NEW) {
 		debug( "finding just copied messages on %s\n", str_ms[t] );
 		svars->drv[t]->find_new_msgs( svars->ctx[t], msgs_found_new, AUX );
 	} else {