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Module imports in mdb query are lazy?.. #27

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ulidtko opened this issue Oct 2, 2015 · 0 comments

ulidtko commented Oct 2, 2015

In the mdb query interface (which I see as a poor man's REPL for Mercury), import of a non-existent module incorrectly succeeds.

The "cannot find..." error does appear later (when the user issues a goal query, which I guess triggers compilation) — but that is too late.

mdb> query
?- [asdfqwer].
:- import_module asdfqwer.
?- 1 = 1.
mercury_compile: cannot find `asdfqwer.int' in directories .,
  /usr/local/mercury-14.01.1/lib/mercury/ints
<stdin>:026: Inferred :- pred query.
<stdin>:026: Inferred :- mode query is det.
Compilation error(s) occurred.

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