Talk:Digraphs and trigraphs (programming)

I very much doubt that this phrase "replaces all occurrences" is correct (my emphasis). For example, it should not replace occurences of that sequence within strings.

It is correct.

Sadly. This is a prime example of design by committee

escape

Is the \? escape really standard, or just typical? Might there be a compiler that maps it to the 0xfe character or similar? AlbertCahalan 04:06, 23 April 2006 (UTC)[reply]

Standard. Akihabara 04:21, 29 November 2006 (UTC)[reply]

IOCCC

Should something be added about the more notorious uses of trigraphs (i.e. obfuscation)? Amcfreely 04:07, 23 April 2006 (UTC)[reply]

Applicability

When were trigraphs introduced? Do they only apply to ISO C, for instance? Have any other languages adopted them? --82.46.154.93 03:38, 27 November 2006 (UTC)[reply]

Redundant digraph

The bit at the bottom on digraphs lists "%:" as a digraph for "#", and "%:%:" as a digraph for "##". Surely the second one is simply two adjacent digraphs?--NeilMitchell 19:55, 16 September 2007 (UTC)[reply]

Can they or can't they be used?

This sentence is unclear:

The C grammar does not permit two subsequent ? tokens, so the only places in a C file where two question marks in a row may be used are in multi-character constants, string literals, and comments.

The whole article seems to say that trigraphs are, in fact, interpreted within constants, literals, and comments - which would imply that you cannot use two question marks in a row there (unless you want them to be interpreted as introducing a trigraph). But this sentence says you can use them there.

I'm not sure what the author meant to say, but I suspect that this wasn't it. JayLevitt 13:41, 7 November 2007 (UTC)[reply]