Trigraphs were proposed for deprecation in C++0x, which was released as C++11. This was opposed by IBM, speaking on behalf of itself and other users of C++, and as a result trigraphs were retained in C++11. Trigraphs were then proposed again for removal (not only deprecation) in C++17. This passed a committee vote, and trigraphs (but not the additional tokens) are removed from C++17 despite the opposition from IBM. Existing code that uses trigraphs can be supported by translating from the source files (parsing trigraphs) to the basic source character set that does not include trigraphs.