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bnfc gives unhelpful error messages #144

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danr opened this issue Jun 18, 2015 · 2 comments
Closed

bnfc gives unhelpful error messages #144

danr opened this issue Jun 18, 2015 · 2 comments

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@danr
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danr commented Jun 18, 2015

On this grammar:

Test.  Test ::= " ")";

bnfc reports:

bnfc: src/LexBNF.x:(80,13)-(86,20): Non-exhaustive patterns in case

The error message could be more helpful! :)
gdetrez added a commit that referenced this issue Jun 25, 2015
@gdetrez
Improve error message (issue #144)
af9885e 
It should now say:

    bnfc: syntax error at line 1, column 20 before `)'
@gdetrez
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gdetrez commented Jun 25, 2015

is this better?

bnfc: syntax error at line 1, column 20 before `)'

@danr
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danr commented Jun 25, 2015

Definitely!

@gdetrez gdetrez closed this as completed Jun 25, 2015
@MatthewDaggitt MatthewDaggitt mentioned this issue Apr 7, 2022
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@gdetrez @danr