bug#24924: GNU pr only working with singlebyte 1-width characters

[Stephane Chazelas]

Only arguing on the classification of this bug here.

Let's call a cat a cat. When something doesn't work as
documented, it's a bug, not a wishlist entry.

AFAICT, there's nothing in the GNU coreutils documentation that
states that pr only works on input that consists exclusively of
single-byte characters that are neither zero-width (though it
copes OK with ASCII BS and TAB) nor double-width (or on
ASCII-only input).

Today, UTF-8 is the most commonly  used character set, so it
even affects English text (where £ (the British currency symbol)
is encoded on two bytes in UTF-8 for instance), and even
US-English text like for the ‘quoting characters’ (3 bytes each
in UTF-8) now that ASCII ' has been demoted to just an
apostrophe.

That can also be seen as a POSIX conformance bug (though GNU
coreutils doesn't claim POSIX conformance, only "The GNU
utilities documented here are /mostly/ compatible with the
POSIX standard").

$ pr -tm --sep-string='|'  <(du --version) <(truncate --version)
du (GNU coreutils) 8.25            |truncate (GNU coreutils) 8.25
Copyright (C) 2016 Free Software Fo|Copyright (C) 2016 Free Software Fo
License GPLv3+: GNU GPL version 3 o|License GPLv3+: GNU GPL version 3 o
This is free software: you are free|This is free software: you are free
There is NO WARRANTY, to the extent|There is NO WARRANTY, to the extent
                                   |
Written by Torbjörn Granlund, David |Written by Pádraig Brady.
and Jim Meyering.                  |

-- 
Stephane