R 4.6.1

Changes in R 4.6.1:

New Features:

• The LaTeX class jss bundled in share/texmf/tex/latex/jss.cls has
been updated to work with hyperref version 7.01q (2026/04/24).

• Plain-text (and legacy HTML) conversion for a simple Rd \eqn{}
now handles \geq, \leq, \neq and \ne in addition to \ge and \le
PR#19070.

Bug Fixes:

• abbreviate(<non-ASCII>) now works better, using iswlower() and
*upper() to treat “wide” characters, thanks to Kevin's PR#19058.

• cut(1:11, {}) now signals an error for the invalid breaks, fixing
PR#19057, thanks to Kevin Ushey.

• all(<symbol>) signals an error now, as some similar coercions;
previously, the coercion of the symbol resulted in NULL
internally, raised a warning, and could access illegal memory;
thanks to Kevin Ushey's PR#19054.

• stl() now checks its 3 x 3 tuning parameters on the R level;
stl(*, s.window = 0) now “works” instead dumping core,
stl(*, s.window = 1) “works” correctly, too. Also, the summary() method
mentions the robustness weights only if any robustness iterations
happened.

Further, stl() is now based on C code, translated from previous
Fortran, triggered by a flang 22 compiler optimization bug (-O2).

• The border case zapsmall(x, digits=Inf) where x contains an Inf
entry no longer returns all NaN but rather x. The improved help
page now has more non-default examples.

• wilcox.test(x, exact=FALSE, correct = k)'s p-value computation
got a missing dnorm(z) factor, and so did the 2-sample case, in
addition to more fixes.

• The data part of getGenerics() listed package names for generic
functions defined in more than one package. Now it lists generic
function names, as intended. Thanks to Michael Chirico for
report and patch proposal (PR#19080).

• Overly long dyn.load() error messages (C level dlerror()), should
no longer corrupt its state, thanks to Ivan Krylov's PR#19029
report and patch.

• as.matrix(<POSIXlt>) again produces a numeric matrix, and the
c() and subassignment methods for POSIXlt objects work correctly
more often, e.g., without a "tzone" attribute, back porting a few
of the PR#18989 fixes from R-devel, both thanks to Suharto
Anggono.

• In methods, as() now correctly coerces S4 objects to S4
superclasses extending old-style classes, instead of returning
only the S3 part.