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rc: fix pwrd() regression, forgot <= ' ' case from needsrcquote()... sorry :(

--- a/sys/src/cmd/rc/io.c

+++ b/sys/src/cmd/rc/io.c

@@ -138,7 +138,7 @@

 pwrd(io *f, char *s)

 {

 	char *t;

-	for(t = s;*t;t++) if(*t >= 0 && strchr("`^#*[]=|\\?${}()'<>&;", *t)) break;

+	for(t = s;*t;t++) if(*t >= 0 && (*t <= ' ' || strchr("`^#*[]=|\\?${}()'<>&;", *t))) break;

 	if(t==s || *t)

 		pquo(f, s);

 	else pstr(f, s);

-- 

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