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cex: don't display twice unifying examples if there is no color

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It makes no sense, and is actually confusing, to display twice the
same example with no visible difference.

* src/complain.h, src/complain.c (is_styled): New.
* src/counterexample.c (print_counterexample): Display the unified
example a second time only if it makes a difference.
* tests/conflicts.at, tests/counterexample.at, tests/report.at: Adjust.
* tests/diagnostics.at: Make sure we do display the unifying examples
twice when colors are enabled.  And check those colors.
This commit is contained in:
Akim Demaille
2020-06-19 07:06:24 +02:00
parent 69e3b405d9
commit 0f120354b6
7 changed files with 78 additions and 34 deletions
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8
tests/report.at
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@@ -1173,25 +1173,21 @@ input.y: warning: 3 reduce/reduce conflicts [-Wconflicts-rr]
Shift/reduce conflict on token "⊕":
Example exp "+" exp • "⊕" exp
First derivation exp ::=[ exp ::=[ exp "+" exp • ] "⊕" exp ]
Example exp "+" exp • "⊕" exp
Second derivation exp ::=[ exp "+" exp ::=[ exp • "⊕" exp ] ]
Reduce/reduce conflict on tokens $end, "+", "⊕":
Example exp "+" exp •
First derivation exp ::=[ exp "+" exp • ]
Example exp "+" exp •
Second derivation exp ::=[ exp "+" exp • ]
Shift/reduce conflict on token "⊕":
Example exp "+" exp • "⊕" exp
First derivation exp ::=[ exp ::=[ exp "+" exp • ] "⊕" exp ]
Example exp "+" exp • "⊕" exp
Second derivation exp ::=[ exp "+" exp ::=[ exp • "⊕" exp ] ]
Shift/reduce conflict on token "⊕":
Example exp "⊕" exp • "⊕" exp
First derivation exp ::=[ exp ::=[ exp "⊕" exp • ] "⊕" exp ]
Example exp "⊕" exp • "⊕" exp
Second derivation exp ::=[ exp "⊕" exp ::=[ exp • "⊕" exp ] ]
input.y:6.3-13: warning: rule useless in parser due to conflicts [-Wother]
@@ -1342,7 +1338,6 @@ State 7
1 exp: exp • "⊕" exp
Example exp "+" exp • "⊕" exp
First derivation exp ::=[ exp ::=[ exp "+" exp • ] "⊕" exp ]
Example exp "+" exp • "⊕" exp
Second derivation exp ::=[ exp "+" exp ::=[ exp • "⊕" exp ] ]
Reduce/reduce conflict on tokens $end, "+", "⊕":
@@ -1350,7 +1345,6 @@ State 7
3 exp: exp "+" exp •
Example exp "+" exp •
First derivation exp ::=[ exp "+" exp • ]
Example exp "+" exp •
Second derivation exp ::=[ exp "+" exp • ]
Shift/reduce conflict on token "⊕":
@@ -1358,7 +1352,6 @@ State 7
1 exp: exp • "⊕" exp
Example exp "+" exp • "⊕" exp
First derivation exp ::=[ exp ::=[ exp "+" exp • ] "⊕" exp ]
Example exp "+" exp • "⊕" exp
Second derivation exp ::=[ exp "+" exp ::=[ exp • "⊕" exp ] ]
@@ -1382,7 +1375,6 @@ State 8
1 exp: exp • "⊕" exp
Example exp "⊕" exp • "⊕" exp
First derivation exp ::=[ exp ::=[ exp "⊕" exp • ] "⊕" exp ]
Example exp "⊕" exp • "⊕" exp
Second derivation exp ::=[ exp "⊕" exp ::=[ exp • "⊕" exp ] ]
]])