Re: bug: some table header(?) output goes to stderr instead of stdout

On 2021-03-18, Marc <Marc@f1-outsourcing.eu> wrote:

[@ sbin]# doveadm -f table -o mail_location=mdbox_deleted:/home/popusers/testtest/mdbox:INDEX=/home/popindex/testtest/index fetch -u testtest 'guid' mailbox INBOX 2> /dev/null 3c967f33b8aea671f3551db1ea8e33e9 6fa01ccc103a7009c7b940657dbcd72c ba955a6d6218950f42e5b0ee0a33a916

Strange -- my version (2.3.10) dumps headers to stdout, not stderr

# doveadm -f table fetch -u $user guid mailbox INBOX 2>/dev/null | cat -n | head -3
1  guid
2  8104226179c70d7cc248c9924cabdb8c
3  0813554a7ed4cf1e113f42a4cc8bc477

From a strictly design point of view, this seems more correct as the header is part of the data, not "out of band" output like errors. If headers are pumped to stderr, you can always employ shell hacks (as a followup poster did) to unify them to stdout

# doveadm -f table fetch ... 2>&1

Maybe it's better to add another formatter to avoid tricky parsing or shell hacks e.g.

# doveadm -f tab-nohdr ...

Joseph Tam <jtam.home@gmail.com>