On 26/10/2012 12:04, peter dalgaard wrote:
On Oct 26, 2012, at 11:17 , Martin Maechler wrote:
Duncan Murdoch <murdoch.dun...@gmail.com>
on Thu, 25 Oct 2012 06:51:25 -0400 writes:
On 12-10-25 5:28 AM, Martin Maechler wrote:
Sorry guys, for coming late,
but *please* don't go there.
I've been there years ago,
and found later why the approach is flawed "by design" :
Internationalization / Localization:
- If the warning comes from a "standard R" function,
the warning is almost surely different in a (say) German
locale, and your pattern won't be detected.
- Ditto if from a recommended package.
- If it is a warning that is not translated then it may be that
it is just not *YET* translated.
I think the other Martin's suggestion addressed this: he matched the
translated message, not the English original.
Duncan Murdoch
Well, I don't think I understand.
Of course you can only match "the message" that warning() or
error() {or rather tryCatch() ,...} produces.
But you cannot guarantee nor know (for sure) if that message is 'original'
or translated.
"cannot", because AFAIK
we cannot guarantee Sys.setlocale() is obeyed platform
independently:
You would have to query the current and save that, set it to C, get the
message, and then reset the locale to the previously saved one.
And these do not work reliably, on some platforms, AFAIK and
read our documentation.
I think the point was to use gettext() on the pattern-to-match. If
the warning is translated, so would this be. The main limitations would seem
to be that you have to be d*mn sure to get the spelling right and,
presumably, it only works with straight string translations, not variant
forms like
msgid "found %d fatal error"
msgid_plural "found %d fatal errors"
msgstr[0] "s'ha trobat %d error fatal"
msgstr[1] "s'han trobat %d errors fatals"
Yes: you also need to get the domain right (and it would be unsafe not
to specify it on the gettext() call). And C-level messages do move
between domains; for example between R 2.15.x and R-devel most of the
graphics ones have moved from 'R' to 'graphics'.
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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