rlang 1.1.4

• Added missing C level r_dyn_raw_push_back() and r_dyn_chr_push_back()
  utilities (#1699).

• last_trace() hyperlinks now use the modern x-r-run format (#1678).

• Fixes for CRAN checks.

rlang 1.1.3

• Fix for CRAN checks.

• %||% is now reexported from base on newer R versions. This avoids
  conflict messages when attaching or importing rlang.

rlang 1.1.2

• Fixed an off-by-one typo in the traceback source column location (#1633).

• abort() now respects the base R global option,
  options(show.error.messages = FALSE) (#1630).

• obj_type_friendly() now only displays the first class of S3 objects (#1622).

• expr_label() now has back-compatility with respect to changes made by R version 4.4 and is.atomic(NULL) (#1655)

• Performance improvement in .rlang_cli_compat() (#1657).

rlang 1.1.1

• englue() now allows omitting {{. This is to make it easier to
  embed in external functions that need to support either { and {{
  (#1601).

• Fix for CRAN checks.

• stop_input_type() now handles I() input literally in arg
  (#1607, @simonpcouch).

• parse_expr() and parse_exprs() are now faster when
  getOption("keep.source") is TRUE (#1603).

rlang 1.1.0

Life cycle changes

• dots_splice() is deprecated. This function was previously in
  the questioning lifecycle stage as we were moving towards the
  explicit !!! splicing style.

• flatten(), squash(), and their variants are deprecated in favour
  of purrr::list_flatten() and purrr::list_c().

• child_env() is deprecated in favour of env() which has supported
  creating child environments for several years now.

Main new features

• last_error() and options(rlang_backtrace_on_error = "full") now
  print the full backtrace tree by default (except for some hidden
  frames). The simplified backtraces tended to hide important context
  too often. Now we show intervening frames in a lighter colour so
  that they don't distract from the important parts of the backtraces
  but are still easily inspectable.

• global_entrace(), last_warnings(), and last_messages() now
  support knitr documents.

• New rlang_backtrace_on_warning_report global option. This is
  useful in conjunction with global_entrace() to get backtraces on
  warnings inside RMarkdown documents.

• global_entrace() and entrace() now stop entracing warnings and
  messages after 20 times. This is to avoid a large overhead when 100s
  or 1000s of warnings are signalled in a loop (#1473).

• abort(), warn(), and inform() gain an .inherit parameter.
  This controls whether parent is inherited. If FALSE,
  cnd_inherits() and try_fetch() do not match chained conditions
  across parents.

  It's normally TRUE by default, but if a warning is chained to an
  error or a message is chained to a warning or error (downgraded
  chaining), .inherit defaults to FALSE (#1573).

• try_fetch() now looks up condition classes across chained errors
  (#1534). This makes try_fetch() insensitive to changes of
  implementation or context of evaluation that cause a classed error
  to suddenly get chained to a contextual error.

• englue() gained env, error_arg, and error_call arguments to
  support being wrapped in another function (#1565).

• The data-masking documentation for arguments has been imported from
  dplyr. You can link to it by starting an argument documentation with
  this button:

  <[`data-masking`][rlang::args_data_masking]>
  

• enquos() and friends gain a .ignore_null argument (#1450).

• New env_is_user_facing() function to determine if an evaluation
  frame corresponds to a direct usage by the end user (from the global
  environment or a package being tested) or indirect usage by a third
  party function. The return value can be overridden by setting the
  "rlang_user_facing" global option.

Miscellaneous fixes and features

• New check_data_frame() and check_logical() functions in
  standalone-types-check.R (#1587, @mgirlich).

• Added allow_infinite argument to check_number_whole() (#1588, @mgirlich).

• The lifecycle standalone file has been updated to match the modern
  lifecycle tools.

• parse_expr() now supports vectors of lines (#1540).

• Quosures can now be consistently concatenated to lists of quosures (#1446).

• Fixed a memory issue that caused excessive duplication in list2()
  and friends (#1491).

• Embraced empty arguments are now properly detected and trimmed by
  quos() (#1421).

• Fixed an edge case that caused enquos(.named = NULL) to return a
  named list (#1505).

• expr_deparse() now deparses the embrace operator {{ on a single
  line (#1511).

• zap_srcref() has been rewritten in C for efficiency (#1513).

• zap_srcref() now supports expression vectors.

• The non-error path of check_dots_unnamed() has been rewritten in C
  for efficiency (#1528).

• Improved error messages in englue() (#1531) and in glue strings in
  the LHS of := (#1526).

• englue() now requires size 1 outputs (#1492). This prevents
  surprising errors or inconsistencies when an interpolated input of
  size != 1 makes its way into the glue string.

• arg_match() now throws correct error when supplied a missing value
  or an empty vector (#1519).

• is_integerish() now handles negative doubles more consistently
  with positive ones (@sorhawell, #1530).

• New check_logical() in standalone-types-check.R (#1560).

• quo_squash() now squashes quosures in function position (#1509).

• is_expression() now recognises quoted functions (#1499).
  It now also recognises non-parsable attributes (#1475).

• obj_address() now supports the missing argument (#1521).

• Fixed a check_installed() issue with packages removed during the
  current R session (#1561).

• new_data_mask() is now slightly faster due to a smaller initial mask size
  and usage of the C level function R_NewEnv() on R >=4.1.0 (#1553).

• The C level r_dyn_*_push_back() utilities are now faster (#1542).

• The C level r_lgl_sum() and r_lgl_which() helpers are now faster
  (#1577, with contributions from @mgirlich).

• rlang is now compliant with -Wstrict-prototypes as requested by CRAN
  (#1508).

rlang 1.0.6

• as_closure(seq.int) now works (#1468).

• rlang no longer stores errors and backtraces in a org:r-lib
  environment on the search path.

• The low-level function error_call() is now exported (#1474).

• Fixed an issue that caused a failure about a missing is_character
  function when rlang is installed alongside an old version of vctrs (#1482).

• Fixed an issue that caused multiline calls in backtraces.

• The C API function r_lgl_which() now propagates the names of the input
  (#1471).

• The pkg_version_info() function now allows == for package
  version comparison (#1469, @KryeKuzhinieri).

rlang 1.0.5

• Fixed backtrace display with calls containing long lists of
  arguments (#1456).

• New r_obj_type_friendly() function in the C library (#1463). It
  interfaces with obj_type_friendly() from compat-obj-type.R via a
  C callable.

rlang 1.0.4

• is_installed() no longer throws an error with irregular package
  names.

• is_installed() and check_installed() now properly detect that
  the base package is installed on older versions of R (#1434).

rlang 1.0.3

• Child errors may now have empty messages to enable this pattern:

  Error in `my_function()`:
  Caused by error in `their_function()`:
  ! Message.
  

• The rlib_bytes class now uses prettyunits to format bytes. The
  bytes are now represented with decimal prefixes instead of binary
  prefixes.

• Supplying a frame environment to the call argument of abort()
  now causes the corresponding function call in the backtrace to be
  highlighted.

  In addition, if you store the argument name of a failing input in
  the arg error field, the argument is also highlighted in the
  backtrace.

  Instead of:

  cli::cli_abort("{.arg {arg}} must be a foobar.", call = call)
  

  You can now write this to benefit from arg highlighting:

  cli::cli_abort("{.arg {arg}} must be a foobar.", arg = arg, call = call)
  

• abort(message = ) can now be a function. In this case, it is
  stored in the header field and acts as a cnd_header() method
  invoked when the message is displayed.

• New obj_type_oo() function in compat-obj-type.R (#1426).

• friendly_type_of() from compat-obj-type.R (formerly
  compat-friendly-type.R) is now obj_type_friendly().

• options(backtrace_on_error = "collapse") and print(trace, simplify = "collapse") are deprecated. They fall back to "none"
  with a warning.

• call_match() now better handles ... when dots_expand = FALSE.

• list2(!!!x) is now faster when x is a list. It is now returned
  as is instead of being duplicated into a new list.

• abort() gains a .trace_bottom argument to disambiguate from
  other .frame. This allows cli::cli_abort() to wrap abort() in
  such a way that .internal mentions the correct package to report
  the error in (#1386).

• The transpose() compat is now more consistent with purrr when
  inner names are not congruent (#1346).

• New reset_warning_verbosity() and reset_message_verbosity()
  functions. These reset the verbosity of messages signalled with
  warn() and inform() with the .frequency argument. This is
  useful for testing verbosity in your package (#1414).

• check_dots_empty() now allows trailing missing arguments (#1390).

• Calls to local functions that are not accessible through :: or
  ::: are now marked with (local) in backtraces (#1399).

• Error messages now mention indexed calls like foo$bar().

• New env_coalesce() function to copy bindings from one environment
  to another. Unlike approaches based on looping with [[<-,
  env_coalesce() preserves active and lazy bindings.

• Chaining errors at top-level (directly in the console instead of in
  a function) no longer fails (#1405).

• Warning style is propagated across parent errors in chained error
  messages (#1387).

• check_installed() now works within catch-all tryCatch(error = )
  expressions (#1402, tidyverse/ggplot2#4845).

• arg_match() and arg_match0() now mention the correct call in
  case of type error (#1388).

• abort() and inform() now print messages to stdout in RStudio
  panes (#1393).

• is_installed() now detects unsealed namespaces (#1378). This fixes
  inconsistent behaviour when run within user onLoad hooks.

• Source references in backtraces and last_error()/last_trace() instructions
  are now clickable in IDEs that support links (#1396).

• compat-cli.R now supports style_hyperlink().

• abort(.homonyms = "error") now throws the expected error (#1394).

• env_binding_are_active() no longer accidentally triggers active bindings
  (#1376).

• Fixed bug in quo_squash() with nested quosures containing the
  missing argument.

rlang 1.0.2

• Backtraces of parent errors are now reused on rethrow. This avoids
  capturing the same backtrace twice and solves consistency problems
  by making sure both errors in a chain have the same backtrace.

• Fixed backtrace oversimplification when cnd is a base error in
  abort(parent = cnd).

• Internal errors thrown with abort(.internal = TRUE) now mention
  the name of the package the error should be reported to.

• Backtraces are now separated from error messages with a --- ruler
  line (#1368).

• The internal bullet formatting routine now ignores unknown names
  (#1364). This makes it consistent with the cli package, increases
  resilience against hard-to-detect errors, and increases forward
  compatibility.

• abort() and friends no longer calls non-existent functions
  (e.g. cli::format_error() or cli::format_warning) when the
  installed version of cli is too old (#1367, tidyverse/dplyr#6189).

• Fixed an OOB subsetting error in abort().