#993961 /usr/bin/fold: doesn't work?

Package:
coreutils
Source:
coreutils
Description:
GNU core utilities
Submitter:
наб
Date:
2021-09-08 16:57:03 UTC
Severity:
normal
#993961#5
Date:
2021-09-08 16:52:36 UTC
From:
To:
Dear Maintainer,

Given "fold -w3 <(echo -n ab) <(echo -n ef)" one'd expect "abe\nf",
but fold outputs "abef".

Given "fold -w3 <(echo -n abcd) <(echo -n efgh)" one'd expect "abc\ndef\ngh",
but fold outputs "abc\ndefg\nh" (!).

This doesn't change when passing -b (not that it, really, should).
What does this mean?

Best,
наб