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Fix bug #8089: Handle spaces at the end of the stream
If the stream is good (i.e. there are still tokens) and we expect an argument, we call getArg(). However, if there are only spaces, the stream suddenly isn't good anymore after 'skipSpaces' and we would get an error when calling 'getChar'. Therefore we have to check whether the stream is still good.
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@ -544,9 +544,12 @@ char_type Parser::getChar()
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docstring Parser::getArg(char_type left, char_type right)
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{
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docstring result;
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skipSpaces();
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docstring result;
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if (!good())
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return result;
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char_type c = getChar();
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if (c != left)
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