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Handling of NB comments in response to ballots
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CA1-020 5.1.1.2 Re-add trigraphs #562

Closed jensmaurer closed 8 months ago

jensmaurer commented 9 months ago

The removal of trigraphs makes it impossible for processing of C source code in code pages with variant code points for characters in the basic character set in a guaranteed deterministic way for all programs.

Add to the end of 5.1.1.2#1: Trigraph sequences are replaced by corresponding single-character internal representations. Add in a new section, 5.2.1.1 Trigraph sequences with the following body: Before any other processing takes place, each occurrence of one of the following sequences of three characters (called trigraph sequences)17) is replaced with the corresponding single character.

??= # ??( [ ??/ \ ??) ] ??’ ^ ??< { ??! | ??> } ??- ~ No other trigraph sequences exist. Each ? that does not begin one of the trigraphs listed above is not changed.

jensmaurer commented 9 months ago

This comment might be a clerical error. Subclause 5.1.1.2 does not exist in DIS 14882 (the C++ standard) at all, but it does exist in DIS 9899 (the C standard).

Wait for clarification.

jensmaurer commented 8 months ago

Withdrawn.