Edgewall Software

Opened 12 years ago

Closed 12 years ago

Last modified 11 years ago

#10441 closed defect (wontfix)

Trac syslog logger prefixes program name with U+FEFF byte-order mark, doesn't seem right

Reported by: lkraav <leho@…> Owned by:
Priority: normal Milestone:
Component: general Version: 0.12.2
Severity: normal Keywords: logging
Cc: Branch:
Release Notes:
API Changes:
Internal Changes:


it should be possible to filter Trac with a sane syslog configuration entry like:

filter f_trac       { program("^Trac"); }

to my surprise this didn't capture traffic into a separate log file, while tailing /var/log/messages didn't show anything suspicious.

it was less, who showed me that this U+FEFF marker is placed in front of every Trac syslog entry.

<U+FEFF>Trac[project:env] INFO: -------------------------------- environment startup [Trac 0.12.2] --------------------------------

i'm following wiki instructions:

log_format = Trac[$(basename)s:$(module)s] $(levelname)s: $(message)s

this marker seems to be in the wrong place at the wrong time and should be eliminated. thoughts?

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Change History (4)

comment:1 by Christian Boos, 12 years ago

Resolution: wontfix
Status: newclosed

(while on the train of #10538 ;-) )

I didn't comment yet because I wasn't sure I found the proper authoritative document on this, but from what I recall, all seem to indicate that Python logging system does the right thing. See in particular python-issue:7077#msg94141 (well, Python 2.7.1 at least: http://hg.python.org/cpython/file/v2.7.1/Lib/logging/handlers.py#l782).

And yes, that's what the RFC:5424#section-6.4 says… so I guess you have to see how your filtering program can represent this BOM!

Not much we could do in Trac anyway, besides monkey-patching logging, which we won't do.

comment:2 by lkraav <leho@…>, 12 years ago

Thanks for clearing this up cboos. This turned out to be an unexpected development (design, not bug! lol) but I guess I have some clues now to look for how smarter folks have solved this.

comment:4 by Christian Boos, 11 years ago

Thanks for the link! This means the next version of Python (2.7.4) will have the fix (http://hg.python.org/cpython/rev/af46a001d5ec).

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