# withr 2.4.1
- Tests which require `capabilities("cairo")` are now skipped.
# withr 2.4.0
- withr is now licensed as MIT (#154).
- Tests For `with_cairo_pdf()` and `with_cairo_ps()` have been
removed, as they fail if Cairo is not available, such as with M1
macOS systems (#158)
- `local_seed()` is now exported (#153)
# withr 2.3.0
## Deprecations
- `local_tempfile()` argument `new` is deprecated, in favor of returning the path
to the new tempfile.
calls like `local_tempfile("xyz")` should be replaced with `xyx <- local_tempfile()`
in your code (#141).
## New features
- New `local_seed()` function and `local_preserve_seed()` functions to correspond
to `with_seed()` and `with_preserve_seed()` (#139).
- New `local_tempdir()` function added to create a temp directory (#140)
- `local_*()` functions now take dots (`...`), which can simplify calls in some
cases, e.g. you can now use `local_options(foo = "bar")` rather than
`local_options(c(foo = "bar"))`.
## Minor improvements and fixes
- `defer()` now throws an error if an error occurs in the deferred expression
(#148)
- `with_file()` and `local_file()` can now work if the file is actually a
directory (#144).
# withr 2.2.0
# withr 2.1.2.9000
- `defer()` can set deferred events on `.GlobalEnv` to facilitate the
interactive development of code inside a function or test. Helpers
`deferred_run()` (and `deferred_clear()`) provide a way to explicity
run and clear (or just clear) deferred events (#76, @jennybc).
- `with_connection()` now works when existing objects or connections
exist with the same names (#120)
- `with_makevars()` now uses `tools::makevars_user()` to determine the
default user makevars file (#77, @siddharthab).
- `with_options()` no longer uses `do.call()`, so optiosn are not
evaluated on exit (#73, @mtmorgan).
- `with_package()` no longer has the `help` argument (#94, @wendtke).
- `with_package()` now does not try to detach the package if it is
already attached before calling `with_package()` (#107)
- `with_preserve_seed()` now restores `.Random.seed` if it is not set
originally (#124).
- Add `with_rng_version()` and `local_rng_version()` functions to
change the version of the RNG (#90, @gaborcsardi).
- `with_svg()` documentation now is consistent across R versions (#129)
- Add `with_timezone()` and `local_timezone()` functions to change the
time zone (#92, @gaborcsardi).
- `with_tempfile()` and `local_tempfile()` now delete recursively
directories on exit (#84, @meta00).
The canonical form [1] of an R package Makefile includes the
following:
- The first stanza includes R_PKGNAME, R_PKGVER, PKGREVISION (as
needed), and CATEGORIES.
- HOMEPAGE is not present but defined in math/R/Makefile.extension to
refer to the CRAN web page describing the package. Other relevant
web pages are often linked from there via the URL field.
This updates all current R packages to this form, which will make
regular updates _much_ easier, especially using pkgtools/R2pkg.
[1] http://mail-index.netbsd.org/tech-pkg/2019/08/02/msg021711.html
A set of functions to run code 'with' safely and temporarily modified
global state. Many of these functions were originally a part of the
'devtools' package, this provides a simple package with limited
dependencies to provide access to these functions.
