On 09/20/2016 07:00 AM, Joseph Myers wrote:
On Tue, 20 Sep 2016, Martin Sebor wrote:

That said, since this specifier formats a vec<int>, it seems that
it might be useful to be able to format vectors of other elements,
such as short and long.  With that in mind, would adding a new V
length modifier instead be a more regular way to extend the pretty
printer to these types?  The V length modifier would have to be
accepted in conjunction with other length modifiers (h, l, etc
and type specifiers (d, i, o, etc.).  E.g, "%hVu" would accept

That's much harder to support in format checking (which expects one length
modifier, not a combination like that).

I haven't looked into it detail but since the format checker supports
one-to-two character sequences of length modifiers (h or hh, etc) it
should be possible to extend it to handle one-to-three character
sequences (h, hV, or hhV, etc.)  The V character would not be a new
length modifier on its own but instead be recognized as part of
a longer length modifier sequence.  Do you see a problem with that?


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