Log Message:
(devel/R-rlang) Updated 0.4.0 to 0.4.4  (R-testthat needs new version)

-----------------------------------------
# rlang 0.4.4
* Maintenance release for CRAN.

-----------------------------------------
# rlang 0.4.3

* You can now use glue syntax to unquote on the LHS of `:=`. This
  syntax is automatically available in all functions taking dots with
  `list2()` and `enquos()`, and thus most of the tidyverse. Note that
  if you use the glue syntax in an R package, you need to import glue.

  A single pair of braces triggers normal glue interpolation:

  ```r
  df <- data.frame(x = 1:3)

  suffix <- "foo"
  df %>% dplyr::mutate("var_{suffix}" := x * 2)
  #>   x var_foo
  #> 1 1       2
  #> 2 2       4
  #> 3 3       6
  ```

  Using a pair of double braces is for labelling a function argument.
  Technically, this is shortcut for `"{as_label(enquo(arg))}"`. The
  syntax is similar to the curly-curly syntax for interpolating
  function arguments:

  ```r
  my_wrapper <- function(data, var, suffix = "foo") {
    data %>% dplyr::mutate("{{ var }}_{suffix}" := {{ var }} * 2)
  }
  df %>% my_wrapper(x)
  #>   x x_foo
  #> 1 1     2
  #> 2 2     4
  #> 3 3     6

  df %>% my_wrapper(sqrt(x))
  #>   x sqrt(x)_foo
  #> 1 1    2.000000
  #> 2 2    2.828427
  #> 3 3    3.464102
  ```

* Fixed a bug in magrittr backtraces that caused duplicate calls to
  appear in the trace.

* Fixed a bug in magrittr backtraces that caused wrong call indices.

* Empty backtraces are no longer shown when `rlang_backtrace_on_error`
  is set.

* The tidy eval `.env` pronoun is now exported for documentation
  purposes.

* `warn()` and `abort()` now check that either `class` or `message`
  was supplied. `inform()` allows sending empty message as it is
  occasionally useful for building user output incrementally.

* `flatten()` fails with a proper error when input can't be flattened (#868, #885).

* `inform()` now consistently appends a final newline to the message
  (#880).

* `cnd_body.default()` is now properly registered.

* `cnd_signal()` now uses the same approach as `abort()` to save
  unhandled errors to `last_error()`.

* Parsable constants like `NaN` and `NA_integer_` are now deparsed by
  `expr_deparse()` in their parsable form (#890).

* Infix operators now stick to their LHS when deparsed by
  `expr_deparse()` (#890).

-----------------------------------------
# rlang 0.4.2

* New `cnd_header()`, `cnd_body()` and `cnd_footer()` generics. These
  are automatically called by `conditionMessage.rlang_error()`, the
  default method for all rlang errors.

  Concretely, this is a way of breaking up lazy generation of error
  messages with `conditionMessage()` into three independent
  parts. This provides a lot of flexibility for hierarchies of error
  classes, for instance you could inherit the body of an error message
  from a parent class while overriding the header and footer.

* The reminder to call `last_error()` is now less confusing thanks to
  a suggestion by @markhwhiteii.

* The functions prefixed in `scoped_` have been renamed to use the
  more conventional `local_` prefix. For instance, `scoped_bindings()`
  is now `local_bindings()`. The `scoped_` functions will be
  deprecated in the next significant version of rlang (0.5.0).

* The `.subclass` argument of `abort()`, `warn()` and `inform()` has
  been renamed to `class`. This is for consistency with our
  conventions for class constructors documented in
  https://adv-r.hadley.nz/s3.html#s3-subclassing.

* `inform()` now prints messages to the standard output by default in
  interactive sessions. This makes them appear more like normal output
  in IDEs such as RStudio. In non-interactive sessions, messages are
  still printed to standard error to make it easy to redirect messages
  when running R scripts (#852).

* Fixed an error in `trace_back()` when the call stack contains a
  quosured symbol.

* Backtrace is now displayed in full when an error occurs in
  non-interactive sessions. Previously the backtraces of parent errors
  were left out.

-----------------------------------------
# rlang 0.4.1

* New experimental framework for creating bulleted error messages. See
  `?cnd_message` for the motivation and an overwiew of the tools we
  have created to support this approach. In particular, `abort()` now
  takes character vectors to assemble a bullet list. Elements named
  `x` are prefixed with a red cross, elements named `i` are prefixed
  with a blue info symbol, and unnamed elements are prefixed with a
  bullet.

* Capture of backtrace in the context of rethrowing an error from an
  exiting handler has been improved. The `tryCatch()` context no
  longer leaks in the high-level backtrace.

* Printing an error no longer recommends calling `last_trace()`,
  unless called from `last_error()`.

* `env_clone()` no longer recreates active bindings and is now just an
  alias for `env2list(as.list(env))`. Unlike `as.list()` which returns
  the active binding function on R < 4.0, the value of active bindings
  is consistently used in all versions.

* The display of rlang errors derived from parent errors has been
  improved. The simplified backtrace (as printed by
  `rlang::last_error()`) no longer includes the parent errors. On the
  other hand, the full backtrace (as printed by `rlang::last_trace()`)
  now includes the backtraces of the parent errors.

* `cnd_signal()` has improved support for rlang errors created with
  `error_cnd()`. It now records a backtrace if there isn't one
  already, and saves the error so it can be inspected with
  `rlang::last_error()`.

* rlang errors are no longer formatted and saved through
  `conditionMessage()`. This makes it easier to use a
  `conditionMessage()` method in subclasses created with `abort()`,
  which is useful to delay expensive generation of error messages
  until display time.

* `abort()` can now be called without error message. This is useful
  when `conditionMessage()` is used to generate the message at
  print-time.

* Fixed an infinite loop in `eval_tidy()`. It occurred when evaluating
  a quosure that inherits from the mask itself.

* `env_bind()`'s performance has been significantly improved by fixing a bug
  that caused values to be repeatedly looked up by name.

* `cnd_muffle()` now checks that a restart exists before invoking
  it. The restart might not exist if the condition is signalled with a
  different function (such as `stop(warning_cnd)`).

* `trace_length()` returns the number of frames in a backtrace.

* Added internal utility `cnd_entrace()` to add a backtrace to a
  condition.

* `rlang::last_error()` backtraces are no longer displayed in red.

* `x %|% y` now also works when `y` is of same length as `x` (@rcannood, #806).

* Empty named lists are now deparsed more explicitly as
  `"<named list>"`.

* Fixed `chr()` bug causing it to return invisibly.