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Accept /[\-]/u as a valid regular expression #288

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merged 1 commit into from
Mar 2, 2024
Merged

Accept /[\-]/u as a valid regular expression #288

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3 changes: 3 additions & 0 deletions libregexp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -783,6 +783,9 @@ static int get_class_atom(REParseState *s, CharRange *cr,
/* always valid to escape these characters */
goto normal_char;
} else if (s->is_unicode) {
// special case: allowed inside [] but not outside
if (ret == -2 && *p == '-' && inclass)
goto normal_char;
invalid_escape:
return re_parse_error(s, "invalid escape sequence in regular expression");
} else {
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3 changes: 3 additions & 0 deletions tests/test_builtin.js
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Expand Up @@ -699,6 +699,9 @@ function test_regexp()
ex = _ex;
}
assert(ex?.message, "invalid class range");

eval("/[\\-]/");
eval("/[\\-]/u");
}

function test_symbol()
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