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cex: don't assume the terminal supports "•"

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Use of print_unicode_char suggested by Bruno Haible.
https://lists.gnu.org/r/bug-gettext/2020-06/msg00012.html

* src/gram.h (print_dot_fallback, print_dot): New.
* src/gram.c, src/derivation.c: Use it.
* tests/counterexample.at, tests/report.at: Adjust the test suite.
* .travis.yml, README-hacking.md: Adjust.
This commit is contained in:
Akim Demaille
2020-06-14 09:13:39 +02:00
parent c35e829a76
commit e077bf1ebc
15 changed files with 245 additions and 179 deletions
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86
tests/report.at
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@@ -1240,12 +1240,12 @@ Nonterminals, with rules where they appear
State 0
0 $accept: . exp $end
1 exp: . exp "⊕" exp
2 | . exp "+" exp
3 | . exp "+" exp
4 | . "number"
5 | . "Ñùṃéℝô"
0 $accept: • exp $end
1 exp: • exp "⊕" exp
2 | • exp "+" exp
3 | • exp "+" exp
4 | • "number"
5 | • "Ñùṃéℝô"
"number" shift, and go to state 1
"Ñùṃéℝô" shift, and go to state 2
@@ -1255,24 +1255,24 @@ State 0
State 1
4 exp: "number" .
4 exp: "number" •
$default reduce using rule 4 (exp)
State 2
5 exp: "Ñùṃéℝô" .
5 exp: "Ñùṃéℝô" •
$default reduce using rule 5 (exp)
State 3
0 $accept: exp . $end
1 exp: exp . "⊕" exp
2 | exp . "+" exp
3 | exp . "+" exp
0 $accept: exp • $end
1 exp: exp • "⊕" exp
2 | exp • "+" exp
3 | exp • "+" exp
$end shift, and go to state 4
"+" shift, and go to state 5
@@ -1281,20 +1281,20 @@ State 3
State 4
0 $accept: exp $end .
0 $accept: exp $end •
$default accept
State 5
1 exp: . exp "⊕" exp
2 | . exp "+" exp
2 | exp "+" . exp
3 | . exp "+" exp
3 | exp "+" . exp
4 | . "number"
5 | . "Ñùṃéℝô"
1 exp: • exp "⊕" exp
2 | • exp "+" exp
2 | exp "+" • exp
3 | • exp "+" exp
3 | exp "+" • exp
4 | • "number"
5 | • "Ñùṃéℝô"
"number" shift, and go to state 1
"Ñùṃéℝô" shift, and go to state 2
@@ -1304,12 +1304,12 @@ State 5
State 6
1 exp: . exp "⊕" exp
1 | exp "⊕" . exp
2 | . exp "+" exp
3 | . exp "+" exp
4 | . "number"
5 | . "Ñùṃéℝô"
1 exp: • exp "⊕" exp
1 | exp "⊕" • exp
2 | • exp "+" exp
3 | • exp "+" exp
4 | • "number"
5 | • "Ñùṃéℝô"
"number" shift, and go to state 1
"Ñùṃéℝô" shift, and go to state 2
@@ -1319,11 +1319,11 @@ State 6
State 7
1 exp: exp . "⊕" exp
2 | exp . "+" exp
2 | exp "+" exp . [$end, "+", "⊕"]
3 | exp . "+" exp
3 | exp "+" exp . [$end, "+", "⊕"]
1 exp: exp • "⊕" exp
2 | exp • "+" exp
2 | exp "+" exp • [$end, "+", "⊕"]
3 | exp • "+" exp
3 | exp "+" exp • [$end, "+", "⊕"]
"⊕" shift, and go to state 6
@@ -1338,24 +1338,24 @@ State 7
Conflict between rule 2 and token "+" resolved as reduce (%left "+").
Shift/reduce conflict on token "⊕":
2 exp: exp "+" exp .
1 exp: exp . "⊕" exp
2 exp: exp "+" exp •
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 $end, "+", "⊕":
2 exp: exp "+" exp .
3 exp: exp "+" exp .
2 exp: exp "+" exp •
3 exp: exp "+" exp •
Example exp "+" exp •
First derivation exp ::=[ exp "+" exp • ]
Example exp "+" exp •
Second derivation exp ::=[ exp "+" exp • ]
Shift/reduce conflict on token "⊕":
3 exp: exp "+" exp .
1 exp: exp . "⊕" exp
3 exp: exp "+" exp •
1 exp: exp • "⊕" exp
Example exp "+" exp • "⊕" exp
First derivation exp ::=[ exp ::=[ exp "+" exp • ] "⊕" exp ]
Example exp "+" exp • "⊕" exp
@@ -1365,10 +1365,10 @@ State 7
State 8
1 exp: exp . "⊕" exp
1 | exp "⊕" exp . [$end, "+", "⊕"]
2 | exp . "+" exp
3 | exp . "+" exp
1 exp: exp • "⊕" exp
1 | exp "⊕" exp • [$end, "+", "⊕"]
2 | exp • "+" exp
3 | exp • "+" exp
"+" shift, and go to state 5
"⊕" shift, and go to state 6
@@ -1378,8 +1378,8 @@ State 8
$default reduce using rule 1 (exp)
Shift/reduce conflict on token "⊕":
1 exp: exp "⊕" exp .
1 exp: exp . "⊕" exp
1 exp: exp "⊕" exp •
1 exp: exp • "⊕" exp
Example exp "⊕" exp • "⊕" exp
First derivation exp ::=[ exp ::=[ exp "⊕" exp • ] "⊕" exp ]
Example exp "⊕" exp • "⊕" exp