[systemd-devel] Multiline log mesages in journal

[Lennart Poettering]

On Wed, 14.03.12 20:54, Marti Raudsepp (marti at juffo.org) wrote:

> > Does PostgreSQL actually write those multi-line messages into syslog
> > datagrams? interesting i must say, I didn't expect that people do that
> 
> No, currently it sends a separate syslog message for each line. But I
> wrote a PostgreSQL module to send messages directly to journal (since
> there's a lot of useful context information that gets lost with
> syslog) and was wondering how to handle multiline messages:
> https://github.com/intgr/pg_journal/blob/master/doc/pg_journal.md

Ah, nice! That looks interesting!

> > Also, we recently added functions to check utf8 validity of strings to
> > systemd.
> 
> Yeah, I took a stab at the message printing code and concluded that it
> needs to be rewritten anyway if we want to handle non-ASCII messages
> right:
> * validating UTF-8 in messages (depending on locale)

depending on locale? If something is UTF-8 it is UTF-8. 

Or are you referring to conversion to 8bit non-UTF-8 charsets for
compatibility with non-UTF8 terminals? honestly, I can only recommend
ignoring those. People who still run non-UTF8 locales deserve that
things get broken for them.

> * making sure that ellipsize doesn't corrupt multibyte UTF-8 chars
> * expand tabs, as you pointed out
> * double-width Unicode characters (e.g. み takes up two terminal columns)
> * newline handling
> 
> Maybe we should give up on ellipsize and just let 'less -S' do the
> work. That would avoid a lot of complexity with width-counting.

I think we already disable ellipsizing if we are piped into something, no?

Lennart

-- 
Lennart Poettering - Red Hat, Inc.