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Fix is_number() accepting "-" as a number
The function would accept the string "-" as a number, when it isn't one. To fix this, don't put it as part of the loop, just add another special case.
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@ -272,6 +272,11 @@ bool is_number(const char* str)
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return false;
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}
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if (str[0] == '-' && str[1] == '\0')
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{
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return false;
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}
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for (size_t i = 1; str[i] != '\0'; ++i)
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{
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if (!SDL_isdigit(str[i]))
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