Tcc supports \u escape sequence inside L"" but I have no idea how to
overcome this problem:
The code inside parse_escape_string function, in this part
case 'x':
case 'u':
case 'U':
p++;
n = 0;
for(;;) {
c = *p;
if (c >= 'a' && c <= 'f')
c = c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
c = c - 'A' + 10;
else if (isnum(c))
c = c - '0';
else
break;
n = n * 16 + c;
p++;
}
does not limit the size of the hexadecimal number written after the \u
escape code. Why is this a problem? If the text with an unicode letter is
followed by letters a,b, c, d, e or f, it will be part of the code itself.
For example L"Mogu\u0107i" will display the word "Mogući" as should be,
because the code 0107 is c acute. However, the word L"Mogu\u0107e" will
not display "Moguće" but "Moguၾ" because 107e is Myanmar Shan Fa
Section 6.4.3 of C99 standard ISO/IEC 9899:1999(E) -- Programming
Languages -- C (uchile.cl)
<https://www.dii.uchile.cl/~daespino/files/Iso_C_1999_definition.pdf> states
that \unnnn escape sequence requires exactly four hexadecimal digits, so
the code above needs to be changed.
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