Merge remote-tracking branch 'origin/maint'

[bison.git] / tests / reduce.at

diff --git a/tests/reduce.at b/tests/reduce.at
index e1e336785a0351d09019e9a8081ae9ca4fb9d078..7e4977a0ade60123ba123e6a8c13abc65e7ed968 100644 (file)
--- a/tests/reduce.at
+++ b/tests/reduce.at
@@ -1,6 +1,6 @@
 # Exercising Bison Grammar Reduction.                      -*- Autotest -*-
-# Copyright (C) 2001, 2002, 2007, 2008, 2009 Free Software Foundation,
-# Inc.
+
+# Copyright (C) 2001-2002, 2007-2013 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -88,16 +88,16 @@ exp: useful;
 ]])
 
 AT_BISON_CHECK([[input.y]], 0, [],
-[[input.y: warning: 9 nonterminals useless in grammar
-input.y:4.8-15: warning: nonterminal useless in grammar: useless1
-input.y:5.8-15: warning: nonterminal useless in grammar: useless2
-input.y:6.8-15: warning: nonterminal useless in grammar: useless3
-input.y:7.8-15: warning: nonterminal useless in grammar: useless4
-input.y:8.8-15: warning: nonterminal useless in grammar: useless5
-input.y:9.8-15: warning: nonterminal useless in grammar: useless6
-input.y:10.8-15: warning: nonterminal useless in grammar: useless7
-input.y:11.8-15: warning: nonterminal useless in grammar: useless8
-input.y:12.8-15: warning: nonterminal useless in grammar: useless9
+[[input.y: warning: 9 nonterminals useless in grammar [-Wother]
+input.y:4.8-15: warning: nonterminal useless in grammar: useless1 [-Wother]
+input.y:5.8-15: warning: nonterminal useless in grammar: useless2 [-Wother]
+input.y:6.8-15: warning: nonterminal useless in grammar: useless3 [-Wother]
+input.y:7.8-15: warning: nonterminal useless in grammar: useless4 [-Wother]
+input.y:8.8-15: warning: nonterminal useless in grammar: useless5 [-Wother]
+input.y:9.8-15: warning: nonterminal useless in grammar: useless6 [-Wother]
+input.y:10.8-15: warning: nonterminal useless in grammar: useless7 [-Wother]
+input.y:11.8-15: warning: nonterminal useless in grammar: useless8 [-Wother]
+input.y:12.8-15: warning: nonterminal useless in grammar: useless9 [-Wother]
 ]])
 
 AT_CHECK([[sed -n '/^Grammar/q;/^$/!p' input.output]], 0,
@@ -142,29 +142,66 @@ useless8: '8';
 useless9: '9';
 ]])
 
-AT_BISON_CHECK([[input.y]], 0, [],
-[[input.y: warning: 9 nonterminals useless in grammar
-input.y: warning: 9 rules useless in grammar
-input.y:6.1-8: warning: nonterminal useless in grammar: useless1
-input.y:7.1-8: warning: nonterminal useless in grammar: useless2
-input.y:8.1-8: warning: nonterminal useless in grammar: useless3
-input.y:9.1-8: warning: nonterminal useless in grammar: useless4
-input.y:10.1-8: warning: nonterminal useless in grammar: useless5
-input.y:11.1-8: warning: nonterminal useless in grammar: useless6
-input.y:12.1-8: warning: nonterminal useless in grammar: useless7
-input.y:13.1-8: warning: nonterminal useless in grammar: useless8
-input.y:14.1-8: warning: nonterminal useless in grammar: useless9
-input.y:6.11-13: warning: rule useless in grammar: useless1: '1'
-input.y:7.11-13: warning: rule useless in grammar: useless2: '2'
-input.y:8.11-13: warning: rule useless in grammar: useless3: '3'
-input.y:9.11-13: warning: rule useless in grammar: useless4: '4'
-input.y:10.11-13: warning: rule useless in grammar: useless5: '5'
-input.y:11.11-13: warning: rule useless in grammar: useless6: '6'
-input.y:12.11-13: warning: rule useless in grammar: useless7: '7'
-input.y:13.11-13: warning: rule useless in grammar: useless8: '8'
-input.y:14.11-13: warning: rule useless in grammar: useless9: '9'
+AT_BISON_CHECK([[-fcaret input.y]], 0, [],
+[[input.y: warning: 9 nonterminals useless in grammar [-Wother]
+input.y: warning: 9 rules useless in grammar [-Wother]
+input.y:6.1-8: warning: nonterminal useless in grammar: useless1 [-Wother]
+ useless1: '1';
+ ^^^^^^^^
+input.y:7.1-8: warning: nonterminal useless in grammar: useless2 [-Wother]
+ useless2: '2';
+ ^^^^^^^^
+input.y:8.1-8: warning: nonterminal useless in grammar: useless3 [-Wother]
+ useless3: '3';
+ ^^^^^^^^
+input.y:9.1-8: warning: nonterminal useless in grammar: useless4 [-Wother]
+ useless4: '4';
+ ^^^^^^^^
+input.y:10.1-8: warning: nonterminal useless in grammar: useless5 [-Wother]
+ useless5: '5';
+ ^^^^^^^^
+input.y:11.1-8: warning: nonterminal useless in grammar: useless6 [-Wother]
+ useless6: '6';
+ ^^^^^^^^
+input.y:12.1-8: warning: nonterminal useless in grammar: useless7 [-Wother]
+ useless7: '7';
+ ^^^^^^^^
+input.y:13.1-8: warning: nonterminal useless in grammar: useless8 [-Wother]
+ useless8: '8';
+ ^^^^^^^^
+input.y:14.1-8: warning: nonterminal useless in grammar: useless9 [-Wother]
+ useless9: '9';
+ ^^^^^^^^
+input.y:6.11-13: warning: rule useless in grammar [-Wother]
+ useless1: '1';
+           ^^^
+input.y:7.11-13: warning: rule useless in grammar [-Wother]
+ useless2: '2';
+           ^^^
+input.y:8.11-13: warning: rule useless in grammar [-Wother]
+ useless3: '3';
+           ^^^
+input.y:9.11-13: warning: rule useless in grammar [-Wother]
+ useless4: '4';
+           ^^^
+input.y:10.11-13: warning: rule useless in grammar [-Wother]
+ useless5: '5';
+           ^^^
+input.y:11.11-13: warning: rule useless in grammar [-Wother]
+ useless6: '6';
+           ^^^
+input.y:12.11-13: warning: rule useless in grammar [-Wother]
+ useless7: '7';
+           ^^^
+input.y:13.11-13: warning: rule useless in grammar [-Wother]
+ useless8: '8';
+           ^^^
+input.y:14.11-13: warning: rule useless in grammar [-Wother]
+ useless9: '9';
+           ^^^
 ]])
 
+
 AT_CHECK([[sed -n '/^Grammar/q;/^$/!p' input.output]], 0,
 [[Nonterminals useless in grammar
    useless1
@@ -238,14 +275,24 @@ non_productive: non_productive useless_token
 %%
 ]])
 
-AT_BISON_CHECK([[not-reduced.y]], 0, [],
-[[not-reduced.y: warning: 2 nonterminals useless in grammar
-not-reduced.y: warning: 3 rules useless in grammar
-not-reduced.y:14.1-13: warning: nonterminal useless in grammar: not_reachable
-not-reduced.y:11.6-19: warning: nonterminal useless in grammar: non_productive
-not-reduced.y:11.6-57: warning: rule useless in grammar: exp: non_productive
-not-reduced.y:14.16-56: warning: rule useless in grammar: not_reachable: useful
-not-reduced.y:17.17-18.63: warning: rule useless in grammar: non_productive: non_productive useless_token
+AT_BISON_CHECK([[-fcaret not-reduced.y]], 0, [],
+[[not-reduced.y: warning: 2 nonterminals useless in grammar [-Wother]
+not-reduced.y: warning: 3 rules useless in grammar [-Wother]
+not-reduced.y:14.1-13: warning: nonterminal useless in grammar: not_reachable [-Wother]
+ not_reachable: useful  { /* A not reachable action. */ }
+ ^^^^^^^^^^^^^
+not-reduced.y:11.6-19: warning: nonterminal useless in grammar: non_productive [-Wother]
+    | non_productive    { /* A non productive action. */ }
+      ^^^^^^^^^^^^^^
+not-reduced.y:11.6-57: warning: rule useless in grammar [-Wother]
+    | non_productive    { /* A non productive action. */ }
+      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+not-reduced.y:14.16-56: warning: rule useless in grammar [-Wother]
+ not_reachable: useful  { /* A not reachable action. */ }
+                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+not-reduced.y:17.17-18.63: warning: rule useless in grammar [-Wother]
+ non_productive: non_productive useless_token
+                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 ]])
 
 AT_CHECK([[sed -n '/^Grammar/q;/^$/!p' not-reduced.output]], 0,
@@ -314,13 +361,13 @@ indirection: underivable;
 ]])
 
 AT_BISON_CHECK([[input.y]], 0, [],
-[[input.y: warning: 2 nonterminals useless in grammar
-input.y: warning: 3 rules useless in grammar
-input.y:5.15-25: warning: nonterminal useless in grammar: underivable
-input.y:6.14-24: warning: nonterminal useless in grammar: indirection
-input.y:5.15-25: warning: rule useless in grammar: exp: underivable
-input.y:6.14-24: warning: rule useless in grammar: underivable: indirection
-input.y:7.14-24: warning: rule useless in grammar: indirection: underivable
+[[input.y: warning: 2 nonterminals useless in grammar [-Wother]
+input.y: warning: 3 rules useless in grammar [-Wother]
+input.y:5.15-25: warning: nonterminal useless in grammar: underivable [-Wother]
+input.y:6.14-24: warning: nonterminal useless in grammar: indirection [-Wother]
+input.y:5.15-25: warning: rule useless in grammar [-Wother]
+input.y:6.14-24: warning: rule useless in grammar [-Wother]
+input.y:7.14-24: warning: rule useless in grammar [-Wother]
 ]])
 
 AT_CHECK([[sed -n '/^Grammar/q;/^$/!p' input.output]], 0,
@@ -350,8 +397,8 @@ exp: exp;
 ]])
 
 AT_BISON_CHECK([[input.y]], 1, [],
-[[input.y: warning: 2 nonterminals useless in grammar
-input.y: warning: 2 rules useless in grammar
+[[input.y: warning: 2 nonterminals useless in grammar [-Wother]
+input.y: warning: 2 rules useless in grammar [-Wother]
 input.y:3.1-3: fatal error: start symbol exp does not derive any sentence
 ]])
 
@@ -396,7 +443,7 @@ AT_TEST_LR_TYPE([[Single State Split]],
 [[%left 'a'
 // Conflict resolution renders state 12 unreachable for canonical LR(1).  We
 // keep it so that the paser table diff is easier to code.
-%define lr.keep-unreachable-states]],
+%define lr.keep-unreachable-state]],
 [[
 S: 'a' A 'a' /* rule 1 */
  | 'b' A 'b' /* rule 2 */
@@ -437,7 +484,7 @@ dnl BISON-STDERR
 [],
 
 dnl TABLES
-[[state 0
+[[State 0
 
     0 $accept: . S $end
     1 S: . 'a' A 'a'
@@ -451,7 +498,7 @@ dnl TABLES
     S  go to state 4
 
 
-state 1
+State 1
 
     1 S: 'a' . A 'a'
     4 A: . 'a' 'a'
@@ -462,7 +509,7 @@ state 1
     A  go to state 6
 
 
-state 2
+State 2
 
     2 S: 'b' . A 'b'
     4 A: . 'a' 'a'
@@ -473,7 +520,7 @@ state 2
     A  go to state 7
 
 
-state 3
+State 3
 
     3 S: 'c' . c
     4 A: . 'a' 'a'
@@ -487,14 +534,14 @@ state 3
     c  go to state 10
 
 
-state 4
+State 4
 
     0 $accept: S . $end
 
     $end  shift, and go to state 11
 
 
-state 5
+State 5
 
     4 A: 'a' . 'a'
     5  | 'a' .  ]AT_COND_CASE([[LALR]], [[['a', 'b']]], [[['a']]])[
@@ -505,21 +552,21 @@ state 5
     Conflict between rule 5 and token 'a' resolved as reduce (%left 'a').
 
 
-state 6
+State 6
 
     1 S: 'a' A . 'a'
 
     'a'  shift, and go to state 13
 
 
-state 7
+State 7
 
     2 S: 'b' A . 'b'
 
     'b'  shift, and go to state 14
 
 
-state 8
+State 8
 
     4 A: 'a' . 'a'
     5  | 'a' .  [$end]
@@ -533,7 +580,7 @@ state 8
                   [[$default]])[  reduce using rule 5 (A)
 
 
-state 9
+State 9
 
     7 c: A .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -541,7 +588,7 @@ state 9
                   [[$default]])[  reduce using rule 7 (c)
 
 
-state 10
+State 10
 
     3 S: 'c' c .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -549,14 +596,14 @@ state 10
                   [[$default]])[  reduce using rule 3 (S)
 
 
-state 11
+State 11
 
     0 $accept: S $end .
 
     $default  accept
 
 
-state 12
+State 12
 
     4 A: 'a' 'a' .]AT_COND_CASE([[canonical LR]], [[  ['a']]])[
 
@@ -564,7 +611,7 @@ state 12
                   [[$default]])[  reduce using rule 4 (A)
 
 
-state 13
+State 13
 
     1 S: 'a' A 'a' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -572,7 +619,7 @@ state 13
                   [[$default]])[  reduce using rule 1 (S)
 
 
-state 14
+State 14
 
     2 S: 'b' A 'b' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -580,7 +627,7 @@ state 14
                   [[$default]])[  reduce using rule 2 (S)
 
 
-state 15
+State 15
 
     6 c: 'a' 'b' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -589,7 +636,7 @@ state 15
                                                                        [[]], [[
 
 
-state 16
+State 16
 
     4 A: 'a' . 'a'
     5  | 'a' .  ['b']
@@ -601,14 +648,14 @@ state 16
                   [[$default]])[  reduce using rule 5 (A)]AT_COND_CASE([[canonical LR]], [[
 
 
-state 17
+State 17
 
     4 A: 'a' 'a' .  [$end]
 
     $end  reduce using rule 4 (A)
 
 
-state 18
+State 18
 
     4 A: 'a' 'a' .  ['b']
 
@@ -629,7 +676,7 @@ AT_TEST_LR_TYPE([[Lane Split]],
 [[%left 'a'
 // Conflict resolution renders state 16 unreachable for canonical LR(1).  We
 // keep it so that the paser table diff is easier to code.
-%define lr.keep-unreachable-states]],
+%define lr.keep-unreachable-state]],
 [[
 /* Similar to the last test case set but two states must be split.  */
 S: 'a' A 'a' /* rule 1 */
@@ -653,7 +700,7 @@ dnl BISON-STDERR
 [],
 
 dnl TABLES
-[[state 0
+[[State 0
 
     0 $accept: . S $end
     1 S: . 'a' A 'a'
@@ -667,7 +714,7 @@ dnl TABLES
     S  go to state 4
 
 
-state 1
+State 1
 
     1 S: 'a' . A 'a'
     4 A: . 'a' 'a' 'a'
@@ -678,7 +725,7 @@ state 1
     A  go to state 6
 
 
-state 2
+State 2
 
     2 S: 'b' . A 'b'
     4 A: . 'a' 'a' 'a'
@@ -689,7 +736,7 @@ state 2
     A  go to state 7
 
 
-state 3
+State 3
 
     3 S: 'c' . c
     4 A: . 'a' 'a' 'a'
@@ -703,14 +750,14 @@ state 3
     c  go to state 10
 
 
-state 4
+State 4
 
     0 $accept: S . $end
 
     $end  shift, and go to state 11
 
 
-state 5
+State 5
 
     4 A: 'a' . 'a' 'a'
     5  | 'a' . 'a'
@@ -718,21 +765,21 @@ state 5
     'a'  shift, and go to state 12
 
 
-state 6
+State 6
 
     1 S: 'a' A . 'a'
 
     'a'  shift, and go to state 13
 
 
-state 7
+State 7
 
     2 S: 'b' A . 'b'
 
     'b'  shift, and go to state 14
 
 
-state 8
+State 8
 
     4 A: 'a' . 'a' 'a'
     5  | 'a' . 'a'
@@ -741,7 +788,7 @@ state 8
     'a'  shift, and go to state 15
 
 
-state 9
+State 9
 
     7 c: A .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -749,7 +796,7 @@ state 9
                   [[$default]])[  reduce using rule 7 (c)
 
 
-state 10
+State 10
 
     3 S: 'c' c .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -757,14 +804,14 @@ state 10
                   [[$default]])[  reduce using rule 3 (S)
 
 
-state 11
+State 11
 
     0 $accept: S $end .
 
     $default  accept
 
 
-state 12
+State 12
 
     4 A: 'a' 'a' . 'a'
     5  | 'a' 'a' .  ]AT_COND_CASE([[LALR]], [[['a', 'b']]], [[['a']]])[
@@ -775,7 +822,7 @@ state 12
     Conflict between rule 5 and token 'a' resolved as reduce (%left 'a').
 
 
-state 13
+State 13
 
     1 S: 'a' A 'a' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -783,7 +830,7 @@ state 13
                   [[$default]])[  reduce using rule 1 (S)
 
 
-state 14
+State 14
 
     2 S: 'b' A 'b' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -791,7 +838,7 @@ state 14
                   [[$default]])[  reduce using rule 2 (S)
 
 
-state 15
+State 15
 
     4 A: 'a' 'a' . 'a'
     5  | 'a' 'a' .  [$end]
@@ -805,7 +852,7 @@ state 15
                   [[$default]])[  reduce using rule 5 (A)
 
 
-state 16
+State 16
 
     4 A: 'a' 'a' 'a' .]AT_COND_CASE([[canonical LR]], [[  ['a']]])[
 
@@ -813,7 +860,7 @@ state 16
                   [[$default]])[  reduce using rule 4 (A)
 
 
-state 17
+State 17
 
     6 c: 'a' 'a' 'b' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -822,7 +869,7 @@ state 17
                                                                        [[]], [[
 
 
-state 18
+State 18
 
     4 A: 'a' . 'a' 'a'
     5  | 'a' . 'a'
@@ -831,7 +878,7 @@ state 18
                                               [[19]])[
 
 
-state 19]AT_COND_CASE([[canonical LR]], [[
+State 19]AT_COND_CASE([[canonical LR]], [[
 
     4 A: 'a' 'a' 'a' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -839,7 +886,7 @@ state 19]AT_COND_CASE([[canonical LR]], [[
                   [[$default]])[  reduce using rule 4 (A)
 
 
-state 20]])[
+State 20]])[
 
     4 A: 'a' 'a' . 'a'
     5  | 'a' 'a' .  ['b']
@@ -851,7 +898,7 @@ state 20]])[
                   [[$default]])[  reduce using rule 5 (A)]AT_COND_CASE([[canonical LR]], [[
 
 
-state 21
+State 21
 
     4 A: 'a' 'a' 'a' .]AT_COND_CASE([[canonical LR]], [[  ['b']]])[
 
@@ -873,7 +920,7 @@ AT_TEST_LR_TYPE([[Complex Lane Split]],
 [[%left 'a'
 // Conflict resolution renders state 16 unreachable for canonical LR(1).  We
 // keep it so that the paser table diff is easier to code.
-%define lr.keep-unreachable-states]],
+%define lr.keep-unreachable-state]],
 [[
 /* Similar to the last test case set but forseeing the S/R conflict from the
    first state that must be split is becoming difficult.  Imagine if B were
@@ -886,7 +933,7 @@ S: 'a' A 'a'
 A: 'a' 'a' B
  ;
 B: 'a'
- | %prec 'a'
+ | %empty %prec 'a'
  ;
 c: 'a' 'a' 'b'
  | A
@@ -900,7 +947,7 @@ dnl BISON-STDERR
 [],
 
 dnl TABLES
-[[state 0
+[[State 0
 
     0 $accept: . S $end
     1 S: . 'a' A 'a'
@@ -914,7 +961,7 @@ dnl TABLES
     S  go to state 4
 
 
-state 1
+State 1
 
     1 S: 'a' . A 'a'
     4 A: . 'a' 'a' B
@@ -924,7 +971,7 @@ state 1
     A  go to state 6
 
 
-state 2
+State 2
 
     2 S: 'b' . A 'b'
     4 A: . 'a' 'a' B
@@ -934,7 +981,7 @@ state 2
     A  go to state 7
 
 
-state 3
+State 3
 
     3 S: 'c' . c
     4 A: . 'a' 'a' B
@@ -947,35 +994,35 @@ state 3
     c  go to state 10
 
 
-state 4
+State 4
 
     0 $accept: S . $end
 
     $end  shift, and go to state 11
 
 
-state 5
+State 5
 
     4 A: 'a' . 'a' B
 
     'a'  shift, and go to state 12
 
 
-state 6
+State 6
 
     1 S: 'a' A . 'a'
 
     'a'  shift, and go to state 13
 
 
-state 7
+State 7
 
     2 S: 'b' A . 'b'
 
     'b'  shift, and go to state 14
 
 
-state 8
+State 8
 
     4 A: 'a' . 'a' B
     7 c: 'a' . 'a' 'b'
@@ -983,7 +1030,7 @@ state 8
     'a'  shift, and go to state 15
 
 
-state 9
+State 9
 
     8 c: A .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -991,7 +1038,7 @@ state 9
                   [[$default]])[  reduce using rule 8 (c)
 
 
-state 10
+State 10
 
     3 S: 'c' c .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -999,14 +1046,14 @@ state 10
                   [[$default]])[  reduce using rule 3 (S)
 
 
-state 11
+State 11
 
     0 $accept: S $end .
 
     $default  accept
 
 
-state 12
+State 12
 
     4 A: 'a' 'a' . B
     5 B: . 'a'
@@ -1020,7 +1067,7 @@ state 12
     Conflict between rule 6 and token 'a' resolved as reduce (%left 'a').
 
 
-state 13
+State 13
 
     1 S: 'a' A 'a' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -1028,7 +1075,7 @@ state 13
                   [[$default]])[  reduce using rule 1 (S)
 
 
-state 14
+State 14
 
     2 S: 'b' A 'b' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -1036,7 +1083,7 @@ state 14
                   [[$default]])[  reduce using rule 2 (S)
 
 
-state 15
+State 15
 
     4 A: 'a' 'a' . B
     5 B: . 'a'
@@ -1053,7 +1100,7 @@ state 15
     B  go to state ]AT_COND_CASE([[canonical LR]], [[21]], [[17]])[
 
 
-state 16
+State 16
 
     5 B: 'a' .]AT_COND_CASE([[canonical LR]], [[  ['a']]])[
 
@@ -1061,7 +1108,7 @@ state 16
                   [[$default]])[  reduce using rule 5 (B)
 
 
-state 17
+State 17
 
     4 A: 'a' 'a' B .]AT_COND_CASE([[canonical LR]], [[  ['a']]])[
 
@@ -1069,7 +1116,7 @@ state 17
                   [[$default]])[  reduce using rule 4 (A)
 
 
-state 18
+State 18
 
     7 c: 'a' 'a' 'b' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -1077,7 +1124,7 @@ state 18
                   [[$default]])[  reduce using rule 7 (c)]AT_COND_CASE([[LALR]], [], [[
 
 
-state 19
+State 19
 
     4 A: 'a' . 'a' B
 
@@ -1085,21 +1132,21 @@ state 19
                                               [[20]])[
 
 
-state 20]AT_COND_CASE([[canonical LR]], [[
+State 20]AT_COND_CASE([[canonical LR]], [[
 
     5 B: 'a' .  [$end]
 
     $end  reduce using rule 5 (B)
 
 
-state 21
+State 21
 
     4 A: 'a' 'a' B .  [$end]
 
     $end  reduce using rule 4 (A)
 
 
-state 22]])[
+State 22]])[
 
     4 A: 'a' 'a' . B
     5 B: . 'a'
@@ -1114,14 +1161,14 @@ state 22]])[
     B  go to state ]AT_COND_CASE([[canonical LR]], [[24
 
 
-state 23
+State 23
 
     5 B: 'a' .  ['b']
 
     'b'  reduce using rule 5 (B)
 
 
-state 24
+State 24
 
     4 A: 'a' 'a' B .  ['b']
 
@@ -1139,7 +1186,7 @@ dnl PARSER-EXIT-VALUE, PARSER-STDOUT, PARSER-STDERR
 ]])])
 
 AT_TEST_LR_TYPE([[Split During Added Lookahead Propagation]],
-[[%define lr.keep-unreachable-states]],
+[[%define lr.keep-unreachable-state]],
 [[
 /* The partial state chart diagram below is for LALR(1).  State 0 is the start
    state.  States are iterated for successor construction in numerical order.
@@ -1191,11 +1238,11 @@ dnl INPUT
 
 dnl BISON-STDERR
 [AT_COND_CASE([[LALR]],
-[[input.y: conflicts: 1 reduce/reduce
+[[input.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
 ]], [])],
 
 dnl TABLES
-[[state 0
+[[State 0
 
     0 $accept: . S $end
     1 S: . 'a' A 'f'
@@ -1213,7 +1260,7 @@ dnl TABLES
     S  go to state 4
 
 
-state 1
+State 1
 
     1 S: 'a' . A 'f'
     2  | 'a' . B
@@ -1226,7 +1273,7 @@ state 1
     B  go to state 7
 
 
-state 2
+State 2
 
     3 S: 'b' . A 'f'
     4  | 'b' . B 'g'
@@ -1240,7 +1287,7 @@ state 2
     B  go to state 10
 
 
-state 3
+State 3
 
     6 S: 'c' . 'c' A 'g'
     7  | 'c' . 'c' B
@@ -1248,14 +1295,14 @@ state 3
     'c'  shift, and go to state 11
 
 
-state 4
+State 4
 
     0 $accept: S . $end
 
     $end  shift, and go to state 12
 
 
-state 5
+State 5
 
     8 A: 'd' . 'e'
     9 B: 'd' . 'e'
@@ -1265,14 +1312,14 @@ state 5
                                                [[20]])[
 
 
-state 6
+State 6
 
     1 S: 'a' A . 'f'
 
     'f'  shift, and go to state 14
 
 
-state 7
+State 7
 
     2 S: 'a' B .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -1280,7 +1327,7 @@ state 7
                   [[$default]])[  reduce using rule 2 (S)
 
 
-state 8
+State 8
 
     5 S: 'b' 'd' .  [$end]
     8 A: 'd' . 'e'
@@ -1293,21 +1340,21 @@ state 8
                   [[$default]])[  reduce using rule 5 (S)
 
 
-state 9
+State 9
 
     3 S: 'b' A . 'f'
 
     'f'  shift, and go to state 15
 
 
-state 10
+State 10
 
     4 S: 'b' B . 'g'
 
     'g'  shift, and go to state 16
 
 
-state 11
+State 11
 
     6 S: 'c' 'c' . A 'g'
     7  | 'c' 'c' . B
@@ -1321,14 +1368,14 @@ state 11
     B  go to state 18
 
 
-state 12
+State 12
 
     0 $accept: S $end .
 
     $default  accept]AT_COND_CASE([[LALR]], [[
 
 
-state 13
+State 13
 
     8 A: 'd' 'e' .  ['f', 'g']
     9 B: 'd' 'e' .  [$end, 'g']
@@ -1339,7 +1386,7 @@ state 13
     $default  reduce using rule 8 (A)]], [[
 
 
-state 13
+State 13
 
     8 A: 'd' 'e' .  ['f']
     9 B: 'd' 'e' .  ]AT_COND_CASE([[canonical LR]], [[[$end]]], [[['g']]])[
@@ -1350,7 +1397,7 @@ state 13
                   [[$default]])[  reduce using rule 8 (A)]])[
 
 
-state 14
+State 14
 
     1 S: 'a' A 'f' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -1358,7 +1405,7 @@ state 14
                   [[$default]])[  reduce using rule 1 (S)
 
 
-state 15
+State 15
 
     3 S: 'b' A 'f' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -1366,7 +1413,7 @@ state 15
                   [[$default]])[  reduce using rule 3 (S)
 
 
-state 16
+State 16
 
     4 S: 'b' B 'g' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -1374,14 +1421,14 @@ state 16
                   [[$default]])[  reduce using rule 4 (S)
 
 
-state 17
+State 17
 
     6 S: 'c' 'c' A . 'g'
 
     'g'  shift, and go to state 19
 
 
-state 18
+State 18
 
     7 S: 'c' 'c' B .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -1389,7 +1436,7 @@ state 18
                   [[$default]])[  reduce using rule 7 (S)
 
 
-state 19
+State 19
 
     6 S: 'c' 'c' A 'g' .]AT_COND_CASE([[canonical LR]], [[  [$end]]])[
 
@@ -1398,7 +1445,7 @@ state 19
                                                                        [[]], [[
 
 
-state 20]AT_COND_CASE([[canonical LR]], [[
+State 20]AT_COND_CASE([[canonical LR]], [[
 
     8 A: 'd' 'e' .  ['f']
     9 B: 'd' 'e' .  ['g']
@@ -1407,7 +1454,7 @@ state 20]AT_COND_CASE([[canonical LR]], [[
     'g'  reduce using rule 9 (B)
 
 
-state 21
+State 21
 
     8 A: 'd' . 'e'
     9 B: 'd' . 'e'
@@ -1415,7 +1462,7 @@ state 21
     'e'  shift, and go to state 22
 
 
-state 22
+State 22
 
     8 A: 'd' 'e' .  ['g']
     9 B: 'd' 'e' .  [$end]
@@ -1443,28 +1490,28 @@ dnl PARSER-EXIT-VALUE, PARSER-STDOUT, PARSER-STDERR
 
 
 ## ------------------------------- ##
-## %define lr.default-reductions.  ##
+## %define lr.default-reduction.  ##
 ## ------------------------------- ##
 
 # AT_TEST_LR_DEFAULT_REDUCTIONS(GRAMMAR, INPUT, TABLES)
 # -----------------------------------------------------
 m4_define([AT_TEST_LR_DEFAULT_REDUCTIONS],
 [
-AT_TEST_TABLES_AND_PARSE([[no %define lr.default-reductions]],
-                         [[all]], [[]],
+AT_TEST_TABLES_AND_PARSE([[no %define lr.default-reduction]],
+                         [[most]], [[]],
                          [[]],
                          [$1], [$2], [[]], [$3])
-AT_TEST_TABLES_AND_PARSE([[%define lr.default-reductions all]],
-                         [[all]], [[]],
-                         [[%define lr.default-reductions all]],
+AT_TEST_TABLES_AND_PARSE([[%define lr.default-reduction most]],
+                         [[most]], [[]],
+                         [[%define lr.default-reduction most]],
                          [$1], [$2], [[]], [$3])
-AT_TEST_TABLES_AND_PARSE([[%define lr.default-reductions consistent]],
+AT_TEST_TABLES_AND_PARSE([[%define lr.default-reduction consistent]],
                          [[consistent]], [[]],
-                         [[%define lr.default-reductions consistent]],
+                         [[%define lr.default-reduction consistent]],
                          [$1], [$2], [[]], [$3])
-AT_TEST_TABLES_AND_PARSE([[%define lr.default-reductions accepting]],
+AT_TEST_TABLES_AND_PARSE([[%define lr.default-reduction accepting]],
                          [[accepting]], [[]],
-                         [[%define lr.default-reductions accepting]],
+                         [[%define lr.default-reduction accepting]],
                          [$1], [$2], [[]], [$3])
 ])
 
@@ -1486,12 +1533,12 @@ a: 'a' ;
    and multiple reductions.  The first reduction has more lookaheads than the
    second, so the first should always be preferred as the default reduction if
    enabled.  The second reduction has one lookahead.  */
-b: ;
-c: ;
+b: %empty;
+c: %empty;
 ]],
 dnl Visit each state mentioned above.
 [['a', 'a']],
-[[state 0
+[[State 0
 
     0 $accept: . start $end
     1 start: . a b
@@ -1505,7 +1552,7 @@ dnl Visit each state mentioned above.
     a      go to state 3
 
 
-state 1
+State 1
 
     4 a: 'a' .]AT_COND_CASE([[accepting]], [[  [$end, 'a', 'b']
 
@@ -1516,20 +1563,20 @@ state 1
     $default  reduce using rule 4 (a)]])[
 
 
-state 2
+State 2
 
     0 $accept: start . $end
 
     $end  shift, and go to state 4
 
 
-state 3
+State 3
 
     1 start: a . b
     2      | a . b 'a'
     3      | a . c 'b'
     5 b: .  [$end, 'a']
-    6 c: .  ['b']]AT_COND_CASE([[all]], [[
+    6 c: .  ['b']]AT_COND_CASE([[most]], [[
 
     'b'       reduce using rule 6 (c)
     $default  reduce using rule 5 (b)]], [[
@@ -1542,31 +1589,32 @@ state 3
     c  go to state 6
 
 
-state 4
+State 4
 
     0 $accept: start $end .
 
     $default  accept
 
 
-state 5
+State 5
 
     1 start: a b .  [$end]
     2      | a b . 'a'
 
     'a'  shift, and go to state 7
 
-    ]AT_COND_CASE([[all]], [[$default]], [[$end]])[  reduce using rule 1 (start)
+    ]AT_COND_CASE([[most]], [[$default]],
+                  [[$end]])[  reduce using rule 1 (start)
 
 
-state 6
+State 6
 
     3 start: a c . 'b'
 
     'b'  shift, and go to state 8
 
 
-state 7
+State 7
 
     2 start: a b 'a' .]AT_COND_CASE([[accepting]], [[  [$end]
 
@@ -1575,7 +1623,7 @@ state 7
     $default  reduce using rule 2 (start)]])[
 
 
-state 8
+State 8
 
     3 start: a c 'b' .]AT_COND_CASE([[accepting]], [[  [$end]