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@ -791,6 +791,10 @@ int DrawStringMultiLine(int left, int right, int top, int bottom, StringID str,
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int maxw = right - left + 1;
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int maxh = bottom - top + 1;
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/* It makes no sense to even try if it can't be drawn anyway, or
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* do we really want to support fonts of 0 or less pixels high? */
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if (maxh <= 0) return top;
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char buffer[DRAW_STRING_BUFFER];
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GetString(buffer, str, lastof(buffer));
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@ -800,7 +804,7 @@ int DrawStringMultiLine(int left, int right, int top, int bottom, StringID str,
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int mt = GetCharacterHeight((FontSize)GB(tmp, 16, 16));
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int total_height = (num + 1) * mt;
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if (maxh != 0 && total_height > maxh) {
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if (total_height > maxh) {
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/* Check there's room enough for at least one line. */
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if (maxh < mt) return top;
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