Remove !!! and ??? operators

Those were adding non backwards compatible syntax, unlike "...",
as pointed out in bug #67646.

3 files changed, 6 insertions, 61 deletions

diff --git a/pod/perlop.pod b/pod/perlop.pod
index e6774303ee..23f62e09ab 100644
--- a/pod/perlop.pod
+++ b/pod/perlop.pod
@@ -813,14 +813,11 @@ between keys and values in hashes, and other paired elements in lists.
         %hash = ( $key => $value );
         login( $username => $password );
 
-=head2 Yada Yada Operators
-X<...> X<... operator> X<!!!> X<!!! operator> X<???> X<??? operator>
-X<yada yada operator>
+=head2 Yada Yada Operator
+X<...> X<... operator> X<yada yada operator>
 
-The yada yada operators are placeholders for code.  They parse without error,
-but when executed either throw an exception or a warning.
-
-The C<...> operator takes no arguments.  When executed, it throws an exception
+The yada yada operator (noted C<...>) is a placeholder for code.
+It parses without error, but when executed it throws an exception
 with the text C<Unimplemented>:
 
     sub foo { ... }
@@ -828,23 +825,7 @@ with the text C<Unimplemented>:
 
     Unimplemented at <file> line <line number>.
 
-The C<!!!> operator is similar, but it takes one argument, a string to use as
-the text of the exception:
-
-    sub bar { !!! "Don't call me, Ishmael!" }
-    bar();
-
-    Don't call me, Ishmael! at <file> line <line number>.
-
-The C<???> operator also takes one argument, but it emits a warning instead of
-throwing an exception:
-
-    sub baz { ??? "Who are you?  What do you want?" }
-    baz();
-    say "Why are you here?";
-
-    Who are you?  What do you want? at <file> line <line number>.
-    Why are you here?
+It takes no argument.
 
 =head2 List Operators (Rightward)
 X<operator, list, rightward> X<list operator>
diff --git a/t/op/yadayada.t b/t/op/yadayada.t
index deca46c789..f82aa72537 100644
--- a/t/op/yadayada.t
+++ b/t/op/yadayada.t
@@ -8,38 +8,10 @@ BEGIN {
 
 use strict;
 
-plan 5;
+plan 1;
 
 my $err = "Unimplemented at $0 line " . ( __LINE__ + 2 ) . ".\n";
 
 eval { ... };
 
 is $@, $err;
-
-$err = "foo at $0 line " . ( __LINE__ + 2 ) . ".\n";
-
-eval { !!! "foo" };
-
-is $@, $err;
-
-$err = "Died at $0 line " . ( __LINE__ + 2 ) . ".\n";
-
-eval { !!! };
-
-is $@, $err;
-
-my $warning;
-
-local $SIG{__WARN__} = sub { $warning = shift };
-
-$err = "bar at $0 line " . ( __LINE__ + 2 ) . ".\n";
-
-eval { ??? "bar" };
-
-is $warning, $err;
-
-$err = "Warning: something's wrong at $0 line " . ( __LINE__ + 2 ) . ".\n";
-
-eval { ??? };
-
-is $warning, $err;
diff --git a/toke.c b/toke.c
index a15dca6174..885027ee79 100644
--- a/toke.c
+++ b/toke.c
@@ -4805,10 +4805,6 @@ Perl_yylex(pTHX)
 	pl_yylval.ival = 0;
 	OPERATOR(ASSIGNOP);
     case '!':
-	if (PL_expect == XSTATE && s[1] == '!' && s[2] == '!') {
-	    s += 3;
-	    LOP(OP_DIE,XTERM);
-	}
 	s++;
 	{
 	    const char tmp = *s++;
@@ -5060,10 +5056,6 @@ Perl_yylex(pTHX)
 	    AOPERATOR(DORDOR);
 	}
      case '?':			/* may either be conditional or pattern */
-	if (PL_expect == XSTATE && s[1] == '?' && s[2] == '?') {
-	    s += 3;
-	    LOP(OP_WARN,XTERM);
-	}
 	if (PL_expect == XOPERATOR) {
 	     char tmp = *s++;
 	     if(tmp == '?') {