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On Thu, 19 Mar 2015, Gedalya wrote:
On 03/18/2015 08:49 PM, Timo Sirainen wrote:
There's no reason why flow and pager should write headers to stderr because
it would always result only in a mess. But instead of changing table
headers to write to stdout, I think a better fix would be to make tab
formatter write headers to stderr. Including headers in stdout makes it
more difficult to write scripts that access the actual data. For example
now you can do "doveadm who -1 | sort" and the output will work. If headers
were written to stdout you'd have to make it more complicated. Also you can
now easily specify what you want to do with the headers, 2>/dev/null if you
don't care about them or 2>&1 if you want to include them in stdout (which
works even after |sort).
doveadm .... 2> /dev/null
will suppress headers _and_ error messages
So, I'll add in my v2.3 TODO that tab formatter should write to stderr..
I've been using "-f flow fetch text | sed s/^text=//" when training
spamassasin. Couldn't find a straightforward 'fetch raw message'. Seems
unnecessarily awkward. Moving headers to stderr would help this, though.
How about a formatter option to enable/disable headers at all? Like,
who -H
ps h
ps --headers
Most probably it useful for scripts only, so add an option to suppress all
headers will fit most case.
- --
Steffen Kaiser
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