improve LTA sprintf message

Otherwise people are clueless what "directives" mean...

Author: TimToady

src/HLL/sprintf.nqp

@@ -60,7 +60,7 @@ my module sprintf {
             @statements.push( $_.made ) for $<statement>;
 
             if ($assert_used_args && $*ARGS_USED < +@*ARGS_HAVE) || ($*ARGS_USED > +@*ARGS_HAVE) {
-                nqp::die("Directives specify "
+                nqp::die("Your printf-style directives specify "
                     ~ ($*ARGS_USED == 1 ?? "1 argument, but "
                                         !! "$*ARGS_USED arguments, but ")
                     ~ (+@*ARGS_HAVE < 1      ?? "no argument was"

t/hll/06-sprintf.t

@@ -32,15 +32,15 @@ is(nqp::sprintf('Peter %s', ['Bishop']), 'Peter Bishop', 'one %s directive' );
 is(nqp::sprintf('%s %s', ['William', 'Bell']), 'William Bell', 'two %s directives' );
 
 dies_ok({ nqp::sprintf('%s %s', ['Dr.', 'William', 'Bell']) }, 'arguments > directives' );
-is($die_message, 'Directives specify 2 arguments, but 3 arguments were supplied',
+is($die_message, 'Your printf-style directives specify 2 arguments, but 3 arguments were supplied',
     'arguments > directives error message' );
 
 dies_ok({ nqp::sprintf('%s %s %s', ['Olivia', 'Dunham']) }, 'directives > arguments' );
-is($die_message, 'Directives specify 3 arguments, but 2 arguments were supplied',
+is($die_message, 'Your printf-style directives specify 3 arguments, but 2 arguments were supplied',
     'directives > arguments error message' );
 
 dies_ok({ nqp::sprintf('%s %s', []) }, 'directives > 0 arguments' );
-is($die_message, 'Directives specify 2 arguments, but no argument was supplied',
+is($die_message, 'Your printf-style directives specify 2 arguments, but no argument was supplied',
     'directives > 0 arguments error message' );
 
 is(nqp::sprintf('%% %% %%', []), '% % %', '%% escape' );