Address Zoltan's review comment about my previous change.

Estimated hours taken: 0.25

tests/debugger/Mmakefile:
tests/debugger/completion.inp:
tests/debugger/completion.exp:
tests/debugger/completion.exp2:
	Address Zoltan's review comment about my previous change.

tests/debugger/Mmakefile

@@ -136,9 +136,8 @@ cmd_quote.out: cmd_quote cmd_quote.inp
 
 # Set up readline to make it easier to use completion non-interactively.
 completion.out: completion completion.inp
-	INPUTRC=completion.inputrc $(MDB) ./completion < completion.inp 2>&1 | \
-		sed -e 's/There are [0-9]* debuggable modules, with a total of [0-9]* procedures./There are NNN debuggable modules, with a total of NNN procedures./' \
-		> completion.out 2>&1
+	INPUTRC=completion.inputrc $(MDB) ./completion \
+		< completion.inp > completion.out 2>&1
 
 debugger_regs.out: debugger_regs debugger_regs.inp
 	$(MDB) ./debugger_regs < debugger_regs.inp > debugger_regs.out 2>&1

tests/debugger/completion.exp

@@ -1,6 +1,7 @@
        1:      1  1 CALL pred completion:main/2-0 (det) completion.m:13
 mdb> echo on
 Command echo enabled.
+mdb> register --quiet
 mdb> 
 ?                  down               maxdepth           return
 P                  e                  mindepth           s
@@ -46,8 +47,6 @@ completion:sub1       completion:sub2:sub3
 
 completion:sub1       completion:sub2       completion:sub2:sub3
 procedures completion:sub1
-Registering debuggable procedures... done.
-There are NNN debuggable modules, with a total of NNN procedures.
 List of procedures in module `completion:sub1'
 
 pred completion:sub1:zp/1-0 (det)

tests/debugger/completion.exp2

@@ -2,6 +2,8 @@
 mdb> echo on
 echo on
 Command echo enabled.
+mdb> register --quiet
+register --quiet
 mdb> 
 ?                  down               maxdepth           return
 P                  e                  mindepth           s
@@ -51,8 +53,6 @@ mdb> procedures completion:
 completion:sub1       completion:sub2       completion:sub2:sub3
 mdb> procedures completion:sub1
 procedures completion:sub1
-Registering debuggable procedures... done.
-There are NNN debuggable modules, with a total of NNN procedures.
 List of procedures in module `completion:sub1'
 
 pred completion:sub1:zp/1-0 (det)

tests/debugger/completion.inp

@@ -1,4 +1,5 @@
 echo on
+register --quiet
 @h@e@v@a@
 p --f@@H@
 sta@ @