tests: check reports with conflicts and UTF-8

This is to record the current state of the report, which escapes the
UTF-8 characters (as parse.error="verbose" does), but shouldn't (as
parse.error="detailed" does).

* tests/report.at: here.

tests/report.at

@@ -1138,5 +1138,515 @@ AT_CHECK([[sed -e 's/bison-xml-report version="[^"]*"/bison-xml-report version="
 ]])
 
 
+AT_BISON_OPTION_POPDEFS
+AT_CLEANUP
+
+
+## ------------------------ ##
+## Reports with conflicts.  ##
+## ------------------------ ##
+
+AT_SETUP([Reports with conflicts])
+
+AT_KEYWORDS([report])
+
+AT_BISON_OPTION_PUSHDEFS
+AT_DATA([input.y],
+[[%left "+"
+%%
+exp
+: exp "⊕" exp
+| exp "+" exp
+| exp "+" exp
+| "number"
+| "Ñùṃéℝô"
+]])
+
+AT_BISON_CHECK([-o input.cc -rall --graph=input.gv --xml input.y], [], [],
+[[input.y: warning: 3 shift/reduce conflicts [-Wconflicts-sr]
+input.y: warning: 3 reduce/reduce conflicts [-Wconflicts-rr]
+input.y: warning: rerun with option '-Wcounterexamples' to generate conflict counterexamples [-Wother]
+input.y:6.3-13: warning: rule useless in parser due to conflicts [-Wother]
+]])
+
+# Check the contents of the report.
+AT_CHECK([cat input.output], [],
+[[Rules useless in parser due to conflicts
+
+    3 exp: exp "+" exp
+
+
+State 7 conflicts: 1 shift/reduce, 3 reduce/reduce
+State 8 conflicts: 2 shift/reduce
+
+
+Grammar
+
+    0 $accept: exp $end
+
+    1 exp: exp "\342\212\225" exp
+    2    | exp "+" exp
+    3    | exp "+" exp
+    4    | "number"
+    5    | "\303\221\303\271\341\271\203\303\251\342\204\235\303\264"
+
+
+Terminals, with rules where they appear
+
+    $end (0) 0
+    error (256)
+    "+" (258) 2 3
+    "\342\212\225" (259) 1
+    "number" (260) 4
+    "\303\221\303\271\341\271\203\303\251\342\204\235\303\264" (261) 5
+
+
+Nonterminals, with rules where they appear
+
+    $accept (7)
+        on left: 0
+    exp (8)
+        on left: 1 2 3 4 5
+        on right: 0 1 2 3
+
+
+State 0
+
+    0 $accept: . exp $end
+    1 exp: . exp "\342\212\225" exp
+    2    | . exp "+" exp
+    3    | . exp "+" exp
+    4    | . "number"
+    5    | . "\303\221\303\271\341\271\203\303\251\342\204\235\303\264"
+
+    "number"                                                    shift, and go to state 1
+    "\303\221\303\271\341\271\203\303\251\342\204\235\303\264"  shift, and go to state 2
+
+    exp  go to state 3
+
+
+State 1
+
+    4 exp: "number" .
+
+    $default  reduce using rule 4 (exp)
+
+
+State 2
+
+    5 exp: "\303\221\303\271\341\271\203\303\251\342\204\235\303\264" .
+
+    $default  reduce using rule 5 (exp)
+
+
+State 3
+
+    0 $accept: exp . $end
+    1 exp: exp . "\342\212\225" exp
+    2    | exp . "+" exp
+    3    | exp . "+" exp
+
+    $end            shift, and go to state 4
+    "+"             shift, and go to state 5
+    "\342\212\225"  shift, and go to state 6
+
+
+State 4
+
+    0 $accept: exp $end .
+
+    $default  accept
+
+
+State 5
+
+    1 exp: . exp "\342\212\225" exp
+    2    | . exp "+" exp
+    2    | exp "+" . exp
+    3    | . exp "+" exp
+    3    | exp "+" . exp
+    4    | . "number"
+    5    | . "\303\221\303\271\341\271\203\303\251\342\204\235\303\264"
+
+    "number"                                                    shift, and go to state 1
+    "\303\221\303\271\341\271\203\303\251\342\204\235\303\264"  shift, and go to state 2
+
+    exp  go to state 7
+
+
+State 6
+
+    1 exp: . exp "\342\212\225" exp
+    1    | exp "\342\212\225" . exp
+    2    | . exp "+" exp
+    3    | . exp "+" exp
+    4    | . "number"
+    5    | . "\303\221\303\271\341\271\203\303\251\342\204\235\303\264"
+
+    "number"                                                    shift, and go to state 1
+    "\303\221\303\271\341\271\203\303\251\342\204\235\303\264"  shift, and go to state 2
+
+    exp  go to state 8
+
+
+State 7
+
+    1 exp: exp . "\342\212\225" exp
+    2    | exp . "+" exp
+    2    | exp "+" exp .  [$end, "+", "\342\212\225"]
+    3    | exp . "+" exp
+    3    | exp "+" exp .  [$end, "+", "\342\212\225"]
+
+    "\342\212\225"  shift, and go to state 6
+
+    $end            reduce using rule 2 (exp)
+    $end            [reduce using rule 3 (exp)]
+    "+"             reduce using rule 2 (exp)
+    "+"             [reduce using rule 3 (exp)]
+    "\342\212\225"  [reduce using rule 2 (exp)]
+    "\342\212\225"  [reduce using rule 3 (exp)]
+    $default        reduce using rule 2 (exp)
+
+    Conflict between rule 2 and token "+" resolved as reduce (%left "+").
+
+
+State 8
+
+    1 exp: exp . "\342\212\225" exp
+    1    | exp "\342\212\225" exp .  [$end, "+", "\342\212\225"]
+    2    | exp . "+" exp
+    3    | exp . "+" exp
+
+    "+"             shift, and go to state 5
+    "\342\212\225"  shift, and go to state 6
+
+    "+"             [reduce using rule 1 (exp)]
+    "\342\212\225"  [reduce using rule 1 (exp)]
+    $default        reduce using rule 1 (exp)
+]])
+
+
+
+
+AT_CHECK([sed -e '1s/GNU Bison .*\.$/GNU Bison VERSION./' input.gv], [],
+[[// Generated by GNU Bison VERSION.
+// Report bugs to <bug-bison@gnu.org>.
+// Home page: <https://www.gnu.org/software/bison/>.
+
+digraph "input.y"
+{
+  node [fontname = courier, shape = box, colorscheme = paired6]
+  edge [fontname = courier]
+
+  0 [label="State 0\n\l  0 $accept: . exp $end\l  1 exp: . exp \"\\342\\212\\225\" exp\l  2    | . exp \"+\" exp\l  3    | . exp \"+\" exp\l  4    | . \"number\"\l  5    | . \"\\303\\221\\303\\271\\341\\271\\203\\303\\251\\342\\204\\235\\303\\264\"\l"]
+  0 -> 1 [style=solid label="\"number\""]
+  0 -> 2 [style=solid label="\"\\303\\221\\303\\271\\341\\271\\203\\303\\251\\342\\204\\235\\303\\264\""]
+  0 -> 3 [style=dashed label="exp"]
+  1 [label="State 1\n\l  4 exp: \"number\" .\l"]
+  1 -> "1R4" [style=solid]
+ "1R4" [label="R4", fillcolor=3, shape=diamond, style=filled]
+  2 [label="State 2\n\l  5 exp: \"\\303\\221\\303\\271\\341\\271\\203\\303\\251\\342\\204\\235\\303\\264\" .\l"]
+  2 -> "2R5" [style=solid]
+ "2R5" [label="R5", fillcolor=3, shape=diamond, style=filled]
+  3 [label="State 3\n\l  0 $accept: exp . $end\l  1 exp: exp . \"\\342\\212\\225\" exp\l  2    | exp . \"+\" exp\l  3    | exp . \"+\" exp\l"]
+  3 -> 4 [style=solid label="$end"]
+  3 -> 5 [style=solid label="\"+\""]
+  3 -> 6 [style=solid label="\"\\342\\212\\225\""]
+  4 [label="State 4\n\l  0 $accept: exp $end .\l"]
+  4 -> "4R0" [style=solid]
+ "4R0" [label="Acc", fillcolor=1, shape=diamond, style=filled]
+  5 [label="State 5\n\l  1 exp: . exp \"\\342\\212\\225\" exp\l  2    | . exp \"+\" exp\l  2    | exp \"+\" . exp\l  3    | . exp \"+\" exp\l  3    | exp \"+\" . exp\l  4    | . \"number\"\l  5    | . \"\\303\\221\\303\\271\\341\\271\\203\\303\\251\\342\\204\\235\\303\\264\"\l"]
+  5 -> 1 [style=solid label="\"number\""]
+  5 -> 2 [style=solid label="\"\\303\\221\\303\\271\\341\\271\\203\\303\\251\\342\\204\\235\\303\\264\""]
+  5 -> 7 [style=dashed label="exp"]
+  6 [label="State 6\n\l  1 exp: . exp \"\\342\\212\\225\" exp\l  1    | exp \"\\342\\212\\225\" . exp\l  2    | . exp \"+\" exp\l  3    | . exp \"+\" exp\l  4    | . \"number\"\l  5    | . \"\\303\\221\\303\\271\\341\\271\\203\\303\\251\\342\\204\\235\\303\\264\"\l"]
+  6 -> 1 [style=solid label="\"number\""]
+  6 -> 2 [style=solid label="\"\\303\\221\\303\\271\\341\\271\\203\\303\\251\\342\\204\\235\\303\\264\""]
+  6 -> 8 [style=dashed label="exp"]
+  7 [label="State 7\n\l  1 exp: exp . \"\\342\\212\\225\" exp\l  2    | exp . \"+\" exp\l  2    | exp \"+\" exp .  [$end, \"+\", \"\\342\\212\\225\"]\l  3    | exp . \"+\" exp\l  3    | exp \"+\" exp .  [$end, \"+\", \"\\342\\212\\225\"]\l"]
+  7 -> 6 [style=solid label="\"\\342\\212\\225\""]
+  7 -> "7R2d" [label="[\"\\342\\212\\225\"]", style=solid]
+ "7R2d" [label="R2", fillcolor=5, shape=diamond, style=filled]
+  7 -> "7R2" [style=solid]
+ "7R2" [label="R2", fillcolor=3, shape=diamond, style=filled]
+  7 -> "7R3d" [label="[$end, \"+\", \"\\342\\212\\225\"]", style=solid]
+ "7R3d" [label="R3", fillcolor=5, shape=diamond, style=filled]
+  8 [label="State 8\n\l  1 exp: exp . \"\\342\\212\\225\" exp\l  1    | exp \"\\342\\212\\225\" exp .  [$end, \"+\", \"\\342\\212\\225\"]\l  2    | exp . \"+\" exp\l  3    | exp . \"+\" exp\l"]
+  8 -> 5 [style=solid label="\"+\""]
+  8 -> 6 [style=solid label="\"\\342\\212\\225\""]
+  8 -> "8R1d" [label="[\"+\", \"\\342\\212\\225\"]", style=solid]
+ "8R1d" [label="R1", fillcolor=5, shape=diamond, style=filled]
+  8 -> "8R1" [style=solid]
+ "8R1" [label="R1", fillcolor=3, shape=diamond, style=filled]
+}
+]])
+
+
+AT_CHECK([[sed -e 's/bison-xml-report version="[^"]*"/bison-xml-report version="VERSION"/g' input.xml]], [],
+[[<?xml version="1.0"?>
+
+<bison-xml-report version="VERSION" bug-report="bug-bison@gnu.org" url="https://www.gnu.org/software/bison/">
+
+  <filename>input.y</filename>
+
+  <grammar>
+    <rules>
+      <rule number="0" usefulness="useful">
+        <lhs>$accept</lhs>
+        <rhs>
+          <symbol>exp</symbol>
+          <symbol>$end</symbol>
+        </rhs>
+      </rule>
+      <rule number="1" usefulness="useful">
+        <lhs>exp</lhs>
+        <rhs>
+          <symbol>exp</symbol>
+          <symbol>&quot;\342\212\225&quot;</symbol>
+          <symbol>exp</symbol>
+        </rhs>
+      </rule>
+      <rule number="2" usefulness="useful">
+        <lhs>exp</lhs>
+        <rhs>
+          <symbol>exp</symbol>
+          <symbol>&quot;+&quot;</symbol>
+          <symbol>exp</symbol>
+        </rhs>
+      </rule>
+      <rule number="3" usefulness="useless-in-parser">
+        <lhs>exp</lhs>
+        <rhs>
+          <symbol>exp</symbol>
+          <symbol>&quot;+&quot;</symbol>
+          <symbol>exp</symbol>
+        </rhs>
+      </rule>
+      <rule number="4" usefulness="useful">
+        <lhs>exp</lhs>
+        <rhs>
+          <symbol>&quot;number&quot;</symbol>
+        </rhs>
+      </rule>
+      <rule number="5" usefulness="useful">
+        <lhs>exp</lhs>
+        <rhs>
+          <symbol>&quot;\303\221\303\271\341\271\203\303\251\342\204\235\303\264&quot;</symbol>
+        </rhs>
+      </rule>
+    </rules>
+    <terminals>
+      <terminal symbol-number="0" token-number="0" name="$end" usefulness="useful"/>
+      <terminal symbol-number="1" token-number="256" name="error" usefulness="useful"/>
+      <terminal symbol-number="3" token-number="258" name="&quot;+&quot;" usefulness="useful" prec="1" assoc="left"/>
+      <terminal symbol-number="4" token-number="259" name="&quot;\342\212\225&quot;" usefulness="useful"/>
+      <terminal symbol-number="5" token-number="260" name="&quot;number&quot;" usefulness="useful"/>
+      <terminal symbol-number="6" token-number="261" name="&quot;\303\221\303\271\341\271\203\303\251\342\204\235\303\264&quot;" usefulness="useful"/>
+    </terminals>
+    <nonterminals>
+      <nonterminal symbol-number="7" name="$accept" usefulness="useful"/>
+      <nonterminal symbol-number="8" name="exp" usefulness="useful"/>
+    </nonterminals>
+  </grammar>
+
+  <automaton>
+
+    <state number="0">
+      <itemset>
+        <item rule-number="0" point="0"/>
+        <item rule-number="1" point="0"/>
+        <item rule-number="2" point="0"/>
+        <item rule-number="3" point="0"/>
+        <item rule-number="4" point="0"/>
+        <item rule-number="5" point="0"/>
+      </itemset>
+      <actions>
+        <transitions>
+          <transition type="shift" symbol="&quot;number&quot;" state="1"/>
+          <transition type="shift" symbol="&quot;\303\221\303\271\341\271\203\303\251\342\204\235\303\264&quot;" state="2"/>
+          <transition type="goto" symbol="exp" state="3"/>
+        </transitions>
+        <errors/>
+        <reductions/>
+      </actions>
+      <solved-conflicts/>
+    </state>
+
+    <state number="1">
+      <itemset>
+        <item rule-number="4" point="1"/>
+      </itemset>
+      <actions>
+        <transitions/>
+        <errors/>
+        <reductions>
+          <reduction symbol="$default" rule="4" enabled="true"/>
+        </reductions>
+      </actions>
+      <solved-conflicts/>
+    </state>
+
+    <state number="2">
+      <itemset>
+        <item rule-number="5" point="1"/>
+      </itemset>
+      <actions>
+        <transitions/>
+        <errors/>
+        <reductions>
+          <reduction symbol="$default" rule="5" enabled="true"/>
+        </reductions>
+      </actions>
+      <solved-conflicts/>
+    </state>
+
+    <state number="3">
+      <itemset>
+        <item rule-number="0" point="1"/>
+        <item rule-number="1" point="1"/>
+        <item rule-number="2" point="1"/>
+        <item rule-number="3" point="1"/>
+      </itemset>
+      <actions>
+        <transitions>
+          <transition type="shift" symbol="$end" state="4"/>
+          <transition type="shift" symbol="&quot;+&quot;" state="5"/>
+          <transition type="shift" symbol="&quot;\342\212\225&quot;" state="6"/>
+        </transitions>
+        <errors/>
+        <reductions/>
+      </actions>
+      <solved-conflicts/>
+    </state>
+
+    <state number="4">
+      <itemset>
+        <item rule-number="0" point="2"/>
+      </itemset>
+      <actions>
+        <transitions/>
+        <errors/>
+        <reductions>
+          <reduction symbol="$default" rule="accept" enabled="true"/>
+        </reductions>
+      </actions>
+      <solved-conflicts/>
+    </state>
+
+    <state number="5">
+      <itemset>
+        <item rule-number="1" point="0"/>
+        <item rule-number="2" point="0"/>
+        <item rule-number="2" point="2"/>
+        <item rule-number="3" point="0"/>
+        <item rule-number="3" point="2"/>
+        <item rule-number="4" point="0"/>
+        <item rule-number="5" point="0"/>
+      </itemset>
+      <actions>
+        <transitions>
+          <transition type="shift" symbol="&quot;number&quot;" state="1"/>
+          <transition type="shift" symbol="&quot;\303\221\303\271\341\271\203\303\251\342\204\235\303\264&quot;" state="2"/>
+          <transition type="goto" symbol="exp" state="7"/>
+        </transitions>
+        <errors/>
+        <reductions/>
+      </actions>
+      <solved-conflicts/>
+    </state>
+
+    <state number="6">
+      <itemset>
+        <item rule-number="1" point="0"/>
+        <item rule-number="1" point="2"/>
+        <item rule-number="2" point="0"/>
+        <item rule-number="3" point="0"/>
+        <item rule-number="4" point="0"/>
+        <item rule-number="5" point="0"/>
+      </itemset>
+      <actions>
+        <transitions>
+          <transition type="shift" symbol="&quot;number&quot;" state="1"/>
+          <transition type="shift" symbol="&quot;\303\221\303\271\341\271\203\303\251\342\204\235\303\264&quot;" state="2"/>
+          <transition type="goto" symbol="exp" state="8"/>
+        </transitions>
+        <errors/>
+        <reductions/>
+      </actions>
+      <solved-conflicts/>
+    </state>
+
+    <state number="7">
+      <itemset>
+        <item rule-number="1" point="1"/>
+        <item rule-number="2" point="1"/>
+        <item rule-number="2" point="3">
+          <lookaheads>
+            <symbol>$end</symbol>
+            <symbol>&quot;+&quot;</symbol>
+            <symbol>&quot;\342\212\225&quot;</symbol>
+          </lookaheads>
+        </item>
+        <item rule-number="3" point="1"/>
+        <item rule-number="3" point="3">
+          <lookaheads>
+            <symbol>$end</symbol>
+            <symbol>&quot;+&quot;</symbol>
+            <symbol>&quot;\342\212\225&quot;</symbol>
+          </lookaheads>
+        </item>
+      </itemset>
+      <actions>
+        <transitions>
+          <transition type="shift" symbol="&quot;\342\212\225&quot;" state="6"/>
+        </transitions>
+        <errors/>
+        <reductions>
+          <reduction symbol="$end" rule="2" enabled="true"/>
+          <reduction symbol="$end" rule="3" enabled="false"/>
+          <reduction symbol="&quot;+&quot;" rule="2" enabled="true"/>
+          <reduction symbol="&quot;+&quot;" rule="3" enabled="false"/>
+          <reduction symbol="&quot;\342\212\225&quot;" rule="2" enabled="false"/>
+          <reduction symbol="&quot;\342\212\225&quot;" rule="3" enabled="false"/>
+          <reduction symbol="$default" rule="2" enabled="true"/>
+        </reductions>
+      </actions>
+      <solved-conflicts>
+        <resolution rule="2" symbol="&quot;+&quot;" type="reduce">%left &quot;+&quot;</resolution>
+      </solved-conflicts>
+    </state>
+
+    <state number="8">
+      <itemset>
+        <item rule-number="1" point="1"/>
+        <item rule-number="1" point="3">
+          <lookaheads>
+            <symbol>$end</symbol>
+            <symbol>&quot;+&quot;</symbol>
+            <symbol>&quot;\342\212\225&quot;</symbol>
+          </lookaheads>
+        </item>
+        <item rule-number="2" point="1"/>
+        <item rule-number="3" point="1"/>
+      </itemset>
+      <actions>
+        <transitions>
+          <transition type="shift" symbol="&quot;+&quot;" state="5"/>
+          <transition type="shift" symbol="&quot;\342\212\225&quot;" state="6"/>
+        </transitions>
+        <errors/>
+        <reductions>
+          <reduction symbol="&quot;+&quot;" rule="1" enabled="false"/>
+          <reduction symbol="&quot;\342\212\225&quot;" rule="1" enabled="false"/>
+          <reduction symbol="$default" rule="1" enabled="true"/>
+        </reductions>
+      </actions>
+      <solved-conflicts/>
+    </state>
+  </automaton>
+</bison-xml-report>
+]])
+
+
 AT_BISON_OPTION_POPDEFS
 AT_CLEANUP