[Rd] Regression in 4.2.0: unable to type special characters in Windows RGui
tom@@@k@||ber@ @end|ng |rom gm@||@com
Mon May 9 10:23:43 CEST 2022
On 5/7/22 15:14, Cesko Voeten wrote:
> Since upgrading to 4.2.0, I can't type special characters in RGui
> anymore. Specifically affected are at least "'~^ which, on my
> US-International keyboard layout, all rely on dead keys. This was not
> a problem in R <= 4.1.3, although I can't say whether the reason is
> any change in R itself, or the fact that 4.2.0 is the first version
> built against ucrt. OS is an up-to-date Windows 10, language is Dutch.
> I tried toggling the 'experimental' Unicode support in Windows's
> Country & Region settings, but it makes no difference. Is this a known
Thanks, could you please try the latest R-patched snapshot build and
test it there? If there is still any problem, please report.
I've fixed handling of the dead keys in Rgui/GraphApp last week. It was
a long standing bug (lack of support) in GraphApp Unicode windows, which
are used when R is running in a multi-byte locale. As R 4.2 switched to
UTF-8, this code path started to be used on systems where it wasn't
before, but sadly this hasn't been discovered by testing before the release.
Technically, there were two bugs: one that dead keys could not be
printed in non-combining form in principle, and another that some
accents were not recognized. The former should be fixed fully. For the
latter, I've added support for a number of accent keys and I can add
more if needed (and if there is anyone who can test that).
Please test, in principle, there may be also other issues in the Unicode
windows not reported before, and it would be nice to get these things
fixed at least for R 4.1.
> Cesko Voeten
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