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Regex: Fix computation of potential starts for lookaheads

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This commit is contained in:
Maxime Coste 2017-10-08 19:03:38 +08:00
parent 34b1f1ccb6
commit db06acdfab
1 changed files with 7 additions and 2 deletions
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9
src/regex_impl.cc
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@ -745,12 +745,12 @@ private:
case ParsedRegex::ResetStart:
return true;
case ParsedRegex::LookAhead:
if (node->children.empty())
if (not node->children.empty())
compute_start_chars(m_forward ? node->children.front() : node->children.back(),
accepted, rejected);
return true;
case ParsedRegex::NegativeLookAhead:
if (node->children.empty())
if (not node->children.empty())
compute_start_chars(m_forward ? node->children.front() : node->children.back(),
rejected, accepted);
return true;
@ -1124,6 +1124,11 @@ auto test_regex = UnitTest{[]{
kak_assert(vm.exec("# foo bar", RegexExecFlags::Search));
kak_assert(*vm.captures()[0] == '#');
}
{
TestVM<> vm{R"((?=))"};
kak_assert(vm.exec(""));
}
}};
}