Make special interpreter variable "noglob" behave as documented:

globbing is off by default.  An incompatible change, but previous
behaviour can be restored by "unset noglob" in .spiceinit.

src/frontend/parser/glob.c

@@ -86,6 +86,9 @@ static void tilde_expand_word(wordlist *wl_node);
  * name of a "HOME" directory are supported. ?*[] are not */
 wordlist *cp_doglob(wordlist *wlist)
 {
+    if (cp_noglob)
+        return wlist;
+
     /* Expand {a,b,c} */
     {
         wordlist *wl = wlist;

tests/regression/misc/dollar-1.cir

@@ -5,7 +5,7 @@ v1 1 0 dc = 0
 .control
 
 set foo = ""
-echo "TEST:" ">{$foo}< should be ><"
+echo "TEST:" ">{$foo}< should be >{}<"
 
 set foo = ( 1 2 3 )
 set bar = 2

tests/regression/misc/dollar-1.out

@@ -1,7 +1,7 @@
 
 Circuit: test for regression of already fixed bugs
 
-TEST: >< should be ><
+TEST: >{}< should be >{}<
 TEST: >1< should be >1<
 TEST: >2< should be >2<
 TEST: 1 2 3 baz bar