Index: subreader.c
===================================================================
--- subreader.c	(revision 28951)
+++ subreader.c	(working copy)
@@ -1726,18 +1726,18 @@
 static void strcpy_trim(char *d, char *s)
 {
     // skip leading whitespace
-    while (*s && !isalnum(*s)) {
+    while (*s && isspace(*s)) {
 	s++;
     }
     for (;;) {
 	// copy word
-	while (*s && isalnum(*s)) {
+    while (*s && !isspace(*s)) {
 	    *d = tolower(*s);
 	    s++; d++;
 	}
 	if (*s == 0) break;
 	// trim excess whitespace
-	while (*s && !isalnum(*s)) {
+    while (*s && isspace(*s)) {
 	    s++;
 	}
 	if (*s == 0) break;