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cex: indent the diagnostics to highlight the structure
Instead of
Shift/reduce conflict on token D:
Example A a • D
First derivation s ::=[ A a a ::=[ b ::=[ c ::=[ • ] ] ] d ::=[ D ] ]
Example A a • D
Second derivation s ::=[ A a d ::=[ • D ] ]
display
Shift/reduce conflict on token D:
Example A a • D
First derivation s ::=[ A a a ::=[ b ::=[ c ::=[ • ] ] ] d ::=[ D ] ]
Example A a • D
Second derivation s ::=[ A a d ::=[ • D ] ]
* src/counterexample.c (print_counterexample): Indent.
* tests/counterexample.at: Adjust.
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