From: Christopher Baines <mail@cbaines.net>
To: guile-devel@gnu.org
Subject: guile-lib logging formatters
Date: Mon, 29 Apr 2024 10:40:12 +0100 [thread overview]
Message-ID: <87bk5s1p8j.fsf@cbaines.net> (raw)
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Hey!
I ran in to some problems with the <log-handler> formatter recently, it
seems it's being called with more than 3 arguments since the update to
guile-lib 0.2.8.
Can you advise on how to approach this?
I presume this isn't some internal interface I'm using accidentally? The
documentation states:
#:formatter
This optional parameter must be a function that takes three
arguments: the log level, the time (as from current-time), and the
log string itself. The function must return a string representing
the formatted log.
So far I've been making this change as it's the neatest way I've come up
with of making the formatters both forward and backwards compatible:
https://git.savannah.gnu.org/cgit/guix/nar-herder.git/commit/?id=6be6f63c9f03b7bc928f7927a38da91f95f57ea2
It's not very neat though. I did try something like:
(lambda* (lvl time str #:allow-other-keys) ...)
But that doesn't seem to be valid Guile.
Thanks,
Chris
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