This release was requested by the CRAN team since parser error messages changed, which were hard-coded in some unit tests (#1180).

Minor changes

  • Add a package sticker (#1172, #1173).
  • Improve error message for scope (#1176).
  • Update lintr config and address newly found lints (#1158).
  • Fix new lints about implicit return (#1166).
  • Clean new lints (#1149).
  • Clean up unnecessary YAML front matter in README (#1165).



  • Suppress warning in io tests (#1169).
  • Ensure unit tests check for appropriate error messages in the R parser for R > 4.3 (#1180).
  • Remove outdated test about repeated parsing (#1163).
  • Update roxygen test comments (#1162).
  • Delete unused snapshot (#1159).

We thank everyone who helped making this release possible.

@AshesITR, @averissimo, @IndrajeetPatil, @lorenzwalthert, @mcanouil, @moodymudskipper, @olivroy, @sbanville-delfi, @sorhawell, @ssh352, @swo, and @vertesy.

This release was requested by the CRAN team to fix CRAN warning on invalid numeric version inputs (#1143).

Minor changes

  • Use cli messaging for cache (#1127).
  • Use latest (and stable!) pre-commit (#1144).
  • Fix CRAN warning on invalid numeric version inputs (#1143).
  • Bump JamesIves/github-pages-deploy-action from 4.4.2 to 4.4.3 (#1139).
  • fix pre-commit (#1132).
  • Don’t require dplyr anywhere (#1131).

We thank everyone who helped making this release possible.

@krlmlr, @lorenzwalthert, @MichaelChirico, @olivroy, @rkrug, and @rossdrucker.

This release was requested by CRAN due to accidentally populating a user cache while building vignettes for R >= 4.3.0.

  • Code quality improvements (#1122).
  • Bump JamesIves/github-pages-deploy-action from 4.4.1 to 4.4.2 (#1123).

Thanks to everyone who contributed to this release: @olivroy and @krlmlr.

This release contains speed-ups between 20% and 40% depending on your use case thanks to replacing {base} functionality with {vctrs} (#1114). With the speed boost introduced in version 1.8.0 in Oct. 2022, {styler} is now up to 2x as fast as before release 1.8.0.

This release was created upon a request by the CRAN team to actively manage not just cached files but also the potentially empty cache directories they live in (#1118). Here are the changes in detail:

  • Require at least R 3.6 (#1101).
  • Prefer {vctrs} functions over slower {base} equivalents (#1114).
  • Replace deprecated use of rlang::with_handlers() (#1103).
  • Remove tail recursion in favor of repeat (#1113).
  • split test-public_api.R for better sharding (#1109).
  • 0-pad filenames for sharding (#1110)
  • add missing {testthat} snapshots (#1115).
  • Bump {touchstone} config (#1104, #1107).
  • Bump actions/checkout to version 3 in GitHub Actions (#1098).

Thanks for everyone contributing to this release:

@IndrajeetPatil, @krlmlr, @kyleam, @MichaelChirico, @mvanaman, @olivroy, and @vvarik.

Bug fixes

  • Fix interaction between cache and stylerignore that could produce invalid code (#1072).
  • Don’t remove line break around {{ and comments that can yield invalid code (#1070).
  • Styling empty roxygen code examples don’t cause errors anymore (#1096).
  • Double indent is also kept if there is only one argument (#1094).
  • Improved blank lines handling for roxygen examples (#1085).
  • style roxygen examples even if nothing comes after (#1089).


  • Document "qmd" as a valid filetype (#1091).

Thanks for everyone who contributed to this release:

@dpprdan, @flying-sheep, @giocomai and @MichaelChirico.


  • The tidyverse recently introduced double-indention for function declarations that don’t fit on one line. It indents two levels, i.e. 4 spaces if you indent_by two spaces.

# old style: remains compliant and won't be re-styled
my_fun <- function(long_argument = 2,
                   indent_up_to_first = "x") {
  # ...

# new style: now also compliant and won't be re-styled
my_fun <- function(
    long_argument = 2,
    indent_double = "x") {
  # ...

You can also use the R package {codegrip} to toggle between the two modes (#1083).

Bug fixes

  • Previously styled code that is now stylerignored should always be formatted correctly. It boils down to the requirement that stylerignore sequences must always be in the same block (#1082).
  • styling around {{ and comments now yields parsable output (#1088).
  • trailing blank lines in roxygen code examples are removed (#1085).
  • roxygen code examples that don’t have any code following after them are now also styled (#1067).

Other user-facing changes

  • Less noisy communication if R option styler.cache_root is not set (#1063).


  • use {lintr} config (#1057, #1059) and pre-commit hook (#1064).
  • use new {pkgdown} hook, check for parsable yaml and mixed line ending (#1080, #1081).
  • update GitHub Actions workflow versions one time (#1073) and add dependabot for the future (#1974).
  • bdr test for additional examples (#1068).
  • check for link rot regularly (#1077, #1086).


  • replace retired purrr::when() with if statements (#1066).
  • more integer literals (#1054).
  • Consistently use @examplesIf for conditionally running examples (#1071).
  • document imports in a single file (#1060).
  • format YAML files (#1061).

A big shout out to anyone who contributed to this release:

@balthasars, @hadley, @IndrajeetPatil, @juliangrimm225 and @krlmlr.



  • Bump minimal version requirement on {withr} as ... in withr::local_options() was introduced only in v.2.3.0 (#1051).
  • Rename internal function set_linebreak_after_ggplot2_plus() to set_line_break_after_ggplot2_plus() for consistency (@Polkas, #1049).
  • Reformat contributing guidelines (#1047).
  • Improve YAML formatting for pkgdown (#1042).
  • Simplify caching internal’s conditionals with rlang::%||% (#1041).
  • Only run {pkgapi} if available (#1039).
  • Typos (@MichaelChirico, #1038)

This release was requested by CRAN to resolve an R CMD Check note (#1044). A big hand to everyone who made this release possible:

Dave Jarvis, @IndrajeetPatil, @lorenzwalthert, @MichaelChirico, @Polkas, and @Robinlovelace.

{styler} 1.8.0 comes with a host of new features, around 40% speed improvement, bug fixes and the removal of 8 recursive dependencies. We also welcome @IndrajeetPatil as a new contributor to {styler}, who has contributed significantly to this and and previous releases.


  • style_dir() and style_pkg() now default to styling all supported file formats (.R, .Rmd, .Rmarkdown, .Rnw, and .qmd) in the (package) directory (#965, #931, #1033).

  • style_pkg() now excludes the auto-generated R/cpp11.R file (#977).

  • minimum needed R version is now bumped to 3.5 (#986).

  • alignment is now detected for function declaration in a similar way as for function calls (#968).

  • new R option styler.ignore_alignment controls if alignment should be detected (and preserved) or not (#932).

Bug Fixes

  • alignment is detected in tibble::tribble() (and similar) calls with more than 3 columns when left aligned (#945).

  • fix alignment detection for one column, mixed named/unnamed (#1035).

  • if there are only empty lines in a code chunk, they are all removed (#936).

  • apply rules for [ to [[ and its closing counterpair (#1030)

  • there is now at most one line break after { and before # (#952, #1022).

  • line breaks may be added to function calls to ensure indention symmetry for round braces (#975).

  • the cache is also invalidated on changing the stylerignore markers (#932).

  • { is not put on a new line after = and in function() { for some edge cases (#939).

  • while ({}) statements are now handled the same way as function statements with regards to breaking lines (#967).

  • parsing of {roxygen2} example comments now also works for edge cases when there is no literal code immediately following after the end of the example section (#940).

  • files with no tokens in it are now transformed into zero-byte files (#962).


  • old (and outdated) vignettes have been removed (#955). To access them, do git checkout v1.0.0.
  • minor improvements to the documentation (#958).
  • turned off styler.colored_print.vertical in vignettes so ANSI output of {prettycode} not messing with {pkgdown} (#956, #957).

Performance and code quality improvements

  • use integer literals and avoid coercions where needed (#994).
  • don’t preserve names for unlist() (#998).
  • remove unused variables (#999).
  • get rid of lints with performance implications (#1000).
  • use more efficient match() alternative (#1001).
  • don’t use nrow arg in new_tibble() calls (#1003).
  • performance improvements with if() + else() instead of ifelse() (#1006).
  • replace tibbles with data frames to improve performance (#1007).
  • simplify styler_df() signature (#1009).
  • minor cleanup (#1016).
  • non-exported and unused functions odd() and even() were removed (#989).
  • all (R)md files in this project’s source code are now formatted with default pandoc markdown formatter. This conversion is required when using the visual mode in RStudio (#941).
  • improved code quality by fixing {lintr} warnings (#960, #1028).

Dependency related changes

In total, 8 recursive dependencies are removed: {ellipsis}, {pillar}, {rematch2}, {tibble}, {utf8}, {fansi}, {lifecycle}, {pkgconfig}.

  • don’t import entire tibble package (#1007).
  • drop {rematch2} dependency (#1011).


  • upgrade testing infra to testthat 3e (#949).
  • run tests in parallel (#978).
  • run some tests sequentially (#1031)
  • better stack tracing for profiling (#979, #980).
  • add flags to skip code coverage for zzz.R (#1005).
  • error now on R CMD note (#987).
  • test on latest Ubuntu instead of Ubuntu 18.04 (#982).
  • use latest GitHub Actions for R (#1034).
  • update {pkgdown} action to always build, but only deploy on default branch (#946).
  • remove pre-commit push hook for news entry (#1023).

A big hand to everyone who made this release possible:

@behrman, @EngineerDanny, @gavinsimpson, @IndrajeetPatil, @jabenninghoff, @krlmlr, @lorenzwalthert, @MichaelChirico, @moodymudskipper, @RaymondBalise, @Robinlovelace, @sebffischer, @sgorm123, @stefanoborini, and @wdkrnls.

  • if else follows directly after if, line breaks are removed (#935).

API changes

  • new R option styler.cache_root (defaulting to "styler") that determines the sub-directory under the {R.cache} cache directory that {styler} uses. Non- default caches won’t be cleaned up by {styler}. We suggest "styler-perm" (also used by {precommit}).

  • stylerignore markers are now interpreted as regular expressions instead of comments that must match exactly. This allows to specify multiple markers in one regular expression for styler.ignore_start and styler.ignore_stop, e.g. to use markers for lintr and styler on the same line, you can use options(styler.ignore_start = "nolint start|styler: off":

    # nolint start, styler: off
    1 +1
    # nolint end
    # styler: on

    As a consequence of this approach, the defaults for styler.ignore_start and styler.ignore_stop omit the # (#849).


  • {styler} can be ran via GitHub Actions using usethis::use_github_action("style") (#914).
  • added guarantee that styled code is parsable (#892).
  • Developers can now create style guides with indention characters other than spaces (#916).


  • Add vignette on distributing style guide (#846, #861).
  • Fix argument name filetype in Example for style_dir() (#855).

Bug fixes

  • Piped function without brackets substitute(x %>% y) don’t get () added anymore for one level deep (not more yet, see #889), as this can change outcome of the code (#876).
  • .onLoad() method no longer broken with {cli} >= 3.1 (#893).
  • Function calls containing + should no longer give any error on styling when there are comments and line breaks under certain circumstances (#905).
  • rules that add tokens don’t break stylerignore sequences anymore (#891).
  • Alignment detection respects stylerignore (#850).
  • Unaligned expressions with quoted key (e.g. c("x" = 2)) are now correctly detected (#881).
  • ~ causes now indention, like +, -, | etc. (#902).
  • Warning: Unknown or uninitialised column: was fixed (#885).
  • function calls with unequal number of token on different lines are no longer deemed aligned if there are arbitrary spaces around the tokens on the lines with most tokens (#902).
  • if a line starts with EQ_SUB (=), the corresponding key is moved to that line too (#923).
  • ensure a trailing blank line also if the input is cached (#867).
  • Preserve trailing blank line in roxygen examples to simplify concatenation of examples (#880).
  • indenty_by is now also respected when curly braces are added to an if statement by {styler} (#915).
  • An error is now thrown on styling if input unicode characters can’t be correctly parsed for Windows and R < 4.2 (#883).
  • styling of text does not error anymore when the R option OutDec is set to a non-default value (#912).


  • Remove dependency on {xfun} (#866).
  • Remove {glue} dependency that was only used by {touchstone} script and is declared as a dependency already in the respective action (#910).
  • Bump minimal R requirement to 3.4 in line with the tidyverse, which allowed to remove the dependency at {backports} and some exception handling.
  • rename default branch to main (#859).
  • the built package size has been reduced by ~50% by listing *-in_tree files in .Rbuildignore (#879).
  • Enable (#843).
  • use pre-commit via GitHub Actions (#872).
  • terminate running jobs on new push to save resources (#888).
  • Use the {touchstone} GitHub Action instead of the literal script (#889).
  • upgrade R CMD check Github Actions to use v2.
  • {styler} test are relaxed to not assume a specific error message on the wrong usage of _ (#929).

Thanks to all contributors that made this release possible:

@bersbersbers, @daniel-wrench, @dbykova, @EngrStudent, @hadley, @IndrajeetPatil, @jam1015, @jooyoungseo, @kalaschnik, @kaytif, @kpagacz, @krlmlr, @lionel-, @lorenzwalthert, @maelle, @MichaelChirico, @mine-cetinkaya-rundel, @neuwirthe, @Polkas, @pwang2, @sebffischer, @ShixiangWang, @ssh352, and @xjtusjtu.

  • clean up cache files older than one week (#842).
  • Files with .Rmarkdown extension are now recognized as an R markdown files in style_file() and friends (#824).

  • Don’t break line before comments in pipes (#822).

  • Ordinary comments (starting with #) that break a roxygen code example block (starting with #') are now recognized and preserved (#830).

  • @examplesIf conditions longer than one line after styling throw an error for compatibility with {roxygen2} (#833).

  • R Markdown chunk headers are no longer required to be parsable R code (#832).

  • Break the line between %>% and { inside and outside function calls (#825).

  • Add language server to third-party integration vignette (#835).

  • improved test setup with fixtures and similar (#798).

We’d like to thank all people who helped making this release possible:

@bersbersbers, @eutwt, @IndrajeetPatil, @j-mammen, @jennybc, @JohannesNE, @jonkeane, @lorenzwalthert, and @MichaelChirico.

Alignment detection

  • Code with left alignment after = in function calls is now recognized as aligned and won’t be reformatted (#774, #777).

    # already detected previously
      x  = 12345,
      y2 =    17
    # newly detected
      x  = 12345,
      y2 = 17
  • Similarly, left aligned after comma is now detected (#785, #786).

    # previously detected
      x  = 12345, "It's old",
      y2 = 17,      "before"
      ~x,             ~y,
      "another",     1:3,
      "b",       1211234
    # newly detected
      x = 2,           p = "another",
      y = "hhjkjkbew", x = 3
      ~x,        ~y,
      "another", 1:3,
      "b",       1211234

    Also see vignette("detect-alignment").

Other new features

  • The base R pipe as introduced in R 4.1.0 is now styled the same way the magrittr pipe is (#803).
  • code chunks with explicit tidy = FALSE in an Rmd or Rnw code header are not styled anymore. This can be handy when the code can’t be parsed, e.g. within a learnr tutorial (#790).
  • #> is recognized as an output marker and no space is added after # (#771).

Minor changes and fixes

  • No curly braces are added to else statements if they are within a pipe, as this can change evaluation logic of code involving the magrittr dot in rare cases (#816).
  • Line breaks between } and else are removed (#793).
  • In function calls, code after = #\n is indented correctly (#814).
  • Multi-expressions containing multiple assignments no longer remove line breaks if they are not causing blank lines (#809).
  • exclude_dirs in style_pkg() is now properly respected if it is a sub-directory of a directory that is scheduled for styling (e.g. test/testthat/some/dir) (#811).
  • The user is not prompted anymore to confirm the creation of a permanent cache as R.cache >= 0.15.0 uses a standard location in line with CRAN policies (#819).
  • R code chunks in nested non-R chunks in R markdown don’t yield an error anymore when document is styled, chunks are still not styled (#788, #794).
  • cache_activate() and cache_deactivate() now respect the R option styler.quiet (#797).
  • multi_line attribute in parse table is now integer, not boolean (#782).
  • The style guide used in Addin is verified when set via R option (#789).
  • Improve pkgdown author URLs (#775).
  • Upgrade touchstone infra (#799, #805).
  • Don’t test on R 3.3 anymore as tidyverse supports only four previous releases (#804).
  • Update Github Actions workflow (#810).

We’d like to thank everyone who has furthered the development of the latest release of styler through their contributions in issues and pull requests:

@ardydavari, @gadenbuie, @IndrajeetPatil, @jasonhan-vassar, @laresbernardo, @lorenzwalthert, @MichaelChirico, @Moohan, @njtierney, @pat-s, @psychelzh, @pvalders, @RoyalTS, and @russHyde.

  • fix interaction between cache and base_indention. This also fixes the Addin for styling a selection with base indention repeatedly (#764).
  • add more examples to styler_* helpfiles (#762).
  • hexadecimal integers now preserve the trailing L when styled (#761).
  • add a pre-push hook to make sure news bullets are added to each PR (#765).

Thanks to everyone who contributed to this release:

@krlmlr, @lorenzwalthert, and @renkun-ken.

API Changes


  • style_file() and friends gain argument dry to control if changes should be applied to files or not (#634).

  • style_file() and friends gain argument base_indention (defaulting to 0) to control by how much the output code is indented (#649, #692). The Addin for styling a selection picks that up, e.g. you can style a function body and indention is preserved (#725).

  • added an option for disabling all communication when using the package (styler.quiet) (#640).

  • scope in tidyverse_style() can now be specified with higher granularity through I(), e.g. I(c('spaces', 'tokens')) allows us to style spaces and tokens without styling line breaks and indention. Previously, only a string was allowed and all less invasive scopes were included, e.g. if you wanted to style tokens, you had to always also style spaces, indention, line breaks as well (#705, #707).

  • added an option (styler.test_dir_writeable) that changes test behavior to not directly modify test files in the current directory (#548).

  • New argument transformers_drop in create_style_guide() to be populated with new helper function specify_transformers_drop() for specifying conditions under which transformers are not going to be used and can therefore be omitted without effecting the result of styling (#711).


  • The environment variable save_after_styling is deprecated in favor of the R option styler.save_after_styling to control if a file is saved after styling with the RStudio Addin. Note than in RStudio >= 1.3.0, you can auto-save edits in general (Code -> Saving -> Auto-Save), e.g. on idle editor or focus loss, so this feature becomes less relevant (#631, #726).

Major changes

  • styler is now distributed under the MIT license (#751).

  • Documentation overhaul: New README, new “Get started” pkgdown page, new vignettes on strict = FALSE, Adoption renamed to Third-party integrations (#741), adding search to pkgdown (#623), group functions in pkgdown reference page (#625), minor other doc improvements (#643, #618, #614, #677, #651, #667, #672, #687, #752, #754).

  • @exampleIsf roxygen tag for conditional examples is now supported (#743).

  • blank lines in function calls and headers are now removed, for the former only when there are no comments before or after the blank line (#629, #630, #635, #723).

  • speed improvements: 15% faster on new code, 70% on repeated styling of compliant code (The latter is not so relevant because it was almost instantaneous already). Most relevant contributions were #679, #691, #681, #711, #739.

  • #<< is now recognized as the xaringan marker and no space is added after# (#700).

Minor changes and fixes

  • style_dir() and style_pkg() now apply directory exclusion recursively with exclude_dirs (#676).

  • switch() now has line breaks after every argument to match the tidyverse style guide (#722, #727).

  • unary + before a function call does not give an error anymore, as before version 1.3.0 (#697).

  • certain combinations of stylerignore markers and cached expressions now don’t give an error anymore (#738).

  • cache is now correctly invalidated when style guide arguments change (#647).

  • empty lines are now removed between pipes and assignments (#645, #710).

  • multiple @examples roxygen tags in a code block of #' are no longer squashed (#748).

  • roxygen code examples starting on the same line as the @examples tag are no longer moved to the next line (#748).

  • always strip trailing spaces and make cache insensitive to it (#626).

  • style_text() can now style all input that is.character(), not just if it inherits from classes character, utf8 or vertical (#693).

  • logical operators within square braces are now moved from the start of a line to the end of the previous line (#709).

  • spaces are now removed before [ and [[ (#713).

  • The internal create_tree() only used in testing of styler now works when the cache is activated (#688).

  • simplification of internals (#692).

Infrastructure changes

Thanks to all the people who made this release possible:

@assignUser, @ColmanHumphrey, @davidchall, @espinielli, @giko45, @hadley, @IndrajeetPatil, @intiben, @jamespeapen, @jthomasmock, @Kalaschnik, @kevinushey, @krlmlr, @lcolladotor, @MichaelChirico, @michaelquinn32, @mine-cetinkaya-rundel, @pat-s, @PMassicotte, @QuLogic, @renkun-ken, @RichardJActon, @seed-of-apricot, @select-id-from-users, @SimonDedman, @stefanoborini, @swsoyee, and @Winterstorm-j.

Release upon request by the CRAN team.

Minor changes and fixes

  • Add search and reference sections to pkgdown webpage (#623, #625).
  • various fixes to handle special cases for caching and stylerignore and their interaction (#611, #610, #609, #607, #602, #600).
  • also test on macOS (#604).
  • skip timing tests on CRAN as requested by CRAN team because they did not pass on all machines (#603).

Emergency release. In case multiple expressions are on one line and only some of them are cached, styler can remove code. To reach this state, some of the expressions must have been styled previously alone and the cache must be active. Example:

#> Using cache 1.3.0 at ~/.Rcache/styler/1.3.0.
#> 1
style_text("1 # comment")
#> # comment

This is obviously detrimental. We have added additional tests and fixed the problem (#593, #595), but we want repeat the warning from ?style_file that all style APIs apart from style_text() overwrite code and that styler can only check the AST remains valid with scope < "tokens". So use this if you are conservative. Or deactivate the cache with deactivate_cache() until it has fully matured.

We thank the people who have contributed to this release:

@ellessenne and @renkun-ken.

Breaking changes

  • style_pkg() and style_dir() gain a new argument exclude_dirs to exclude directories from styling, by default renv and packrat. Note that the defaults won’t change the behavior of style_pkg() because it does anyways does not style these directories and they were set for consistency.

  • style_file() and friends now strip ./ in file paths returned invisibly, i.e. ./script.R becomes script.R (#568).

New features

  • ignore certain lines using # styler: off and #styler: on or custom markers, see ?stylerignore (#560).

  • styler caches results of styling, so applying styler to code it has styled before will be instantaneous. This brings large speed boosts in many situations, e.g. when style_pkg() is run but only a few files have changed since the last styling or when using the styler pre-commit hook. Because styler caches by expression, you will also get speed boosts in large files with many expressions when you only change a few of them. See ?caching for details (#538, #578).

  • create_style_guide() gains two arguments style_guide_name and style_guide_version that are carried as meta data, in particular to version third-party style guides and ensure the proper functioning of caching. This change is completely invisible to users who don’t create and distribute their own style guide like tidyverse_style() (#572).

Minor changes and fixes

  • lines are now broken after + in ggplot2 calls for strict = TRUE (#569).

  • function documentation now contains many more line breaks due to roxygen2 update to version 7.0.1 (#566).

  • spaces next to the braces in subsetting expressions [ and [[ are now removed (#580).

  • Adapt to changes in the R parser to make styler pass R CMD check again. (#583).

Thanks to all contributors involved, in particular @colearendt, @davidski, @IndrajeetPatil, @pat-s, and @programming-wizard.

Breaking changes

  • style_file() now correctly styles multiple files from different directories. We no longer display the file name of the styled file, but the absolute path. This is also reflected in the invisible return value of the function (#522).

  • style_file() and friends do not write content back to a file when styling does not cause any changes in the file. This means the modification date of styled files is only changed when the content is changed (#532).

New features

  • Aligned function calls are detected and remain unchanged if they match the styler definition for aligned function calls (#537).

  • curly-curly ({{) syntactic sugar introduced with rlang 0.4.0 is now explicitly handled, where previously it was just treated as two consecutive curly braces (#528).

  • style_pkg(), style_dir() and the Addins can now style .Rprofile, and hidden files are now also styled (#530).

Minor improvements and fixes

  • Roxygen code examples: leverage roxygen2 for correct escaping of expressions that contain \, in particular in dontrun{} and friends, allow quoted braces that are not matched (#729).

  • Brace expressions in function calls are formatted in a less compact way to improve readability. Typical use case: tryCatch() (#543).

  • Arguments in function declarations in a context which is indented multiple times should now be correct. This typically affects R6::R6Class() (#546).

  • Escape characters in roxygen code examples are now correctly escaped (#512).

  • Special characters such as \n in strings are now preserved in text and not turned into literal values like a line break (#554).

  • Style selection Addin now preserves line break when the last line selected is an entire line (#520).

  • Style file Addin can now properly handle cancelling (#511).

  • The body of a multi-line function declaration is now indented correctly for strict = FALSE and also wrapped in curly braces for strict = TRUE (#536).

  • Advice for contributors in was updated (#508).


Thanks to all contributors involved, in particular

@Banana1530, @batpigandme, @cpsievert, @ellessenne, @Emiller88, @hadley, @IndrajeetPatil, @krlmlr, @lorenzwalthert, @lwjohnst86, @michaelquinn32, @mine-cetinkaya-rundel, @Moohan, @nxskok, @oliverbeagley, @pat-s, @reddy-ia, and @russHyde

This is primarily a maintenance release upon the request of the CRAN team (#490).

Major changes

  • Users can now control style configurations for styler Addins (#463, #500), using the Set style Addin. See ?styler::styler_addins for details.

  • return() is now always put in braces and put on a new line when used in a conditional statement (#492).

  • %>% almost always causes a line break now for strict = TRUE (#503).

Minor changes

  • style_pkg() now also styles the “demo” directory by default (#453).

  • multi-line strings are now styled more consistently (#459).

  • indention in roxygen code example styling (#455) and EOF spacing (#469) was fixed.

  • indention for for loop edge case (#457) and comments in pipe chain (#482) were fixed.

  • line-break styling around comma is improved (#479).

  • bug that can cause an error when the variable text in any name space before styler on the search path was defined and did not have length 1 is fixed (#484).

  • slightly confusing warning about empty strings caused with roxygen code examples and Rmd was removed.

  • right apostrophe to let package pass R CMD Check in strict Latin-1 locale was removed (#490, reason for release).

Adaption of styler

Since it’s never been mentioned in the release notes, we also mention here where else you can use styler functionality:

  • usethis::use_tidy_style() styles your project according to the tidyverse style guide.

  • reprex::reprex(style = TRUE) to prettify reprex code before printing. To permanently use style = TRUE without specifying it every time, you can add the following line to your .Rprofile (via usethis::edit_r_profile()): options(reprex.styler = TRUE).

  • you can pretty-print your R code in RMarkdown reports without having styler modifying the source. This feature is implemented as a code chunk option in knitr. use tidy = "styler" in the header of a code chunks (e.g. ```{r name-of-the-chunk, tidy = "styler"}), or knitr::opts_chunk$set(tidy = "styler") at the top of your RMarkdown script.

  • pretty-printing of drake workflow data frames with drake::drake_plan_source().

  • Adding styler as a fixer to the ale Plug-in for VIM.

Thanks to all contributors involved, in particular @ArthurPERE, @hadley, @igordot, @IndrajeetPatil, @jackwasey, @jcrodriguez1989, @jennybc, @jonmcalder, @katrinleinweber, @krlmlr, @lorenzwalthert, @michaelquinn32, @msberends, @raynamharris, @riccardoporreca, @rjake, @Robinlovelace, @skirmer, @thalesmello, @tobiasgerstenberg, @tvatter, @wdearden, @wmayner, and @yech1990.

This release introduces new features and is fully backward-compatible. It also adapts to changes in the R parser committed into R devel (#419).

Major Changes

  • styler can now style roxygen code examples in the source code of package (#332) as well as Rnw files (#431).

  • the print method for the output of style_text() (print.vertical()) now returns syntax-highlighted code by default, controllable via the option styler.colored_print.vertical (#417).

  • the README was redesigned (#413).

  • semi-colon expression that contained multiple assignments was fixed (#404).

Minor Changes

  • cursor position is remembered for styling via Addin (#416).

  • adapt spacing around tilde for multi-token expressions(#424) and brace edge case (#425).

  • only add brackets to piped function call if RHS is a symbol (#422).

  • increase coverage again to over 90% (#412).

  • move rule that turns single quotes into double quotes to token modifier in `tidyverse_style_guide() (#406).

  • remove line-breaks before commas (#405).

  • removed package dependency enc in favor of xfun (#442).

Thanks to all contributors for patches, issues and the like: @jonmcalder, @krlmlr, @IndrajeetPatil, @kalibera, @Hasnep, @kiranmaiganji, @dirkschumacher, @ClaytonJY, @wlandau, @maurolepore

This is a maintenance release without any breaking API changes.

Major Changes

  • Fixed indention for named multi-line function calls (#372).

  • Non-R code chunks in .Rmd files are now respected and won’t get styled (#386).

Minor Changes

  • Fixing an edge case in which, if very long strings were present in the code, tokens could be replaced with wrong text (#384).

  • Spacing around tilde in formulas depends now on whether there is a LHS in the formula (#379).

  • Spaces are now also added around EQ_SUB (=) (#380).

  • Added to outline guidelines for contributing to styler.

  • More informative error messages for parsing problems (#401, #400).

  • Improved documentation (#387).

Thanks to all contributors for patches, issues and the like: @katrinleinweber, @krlmlr, @dchiu911, @ramnathv, @aedobbyn, @Bio7, @tonytonov, @samhinshaw, @fny, @vnijs, @martin-mfg, @NGaffney, @dchiu911.

This is a maintenance release without any breaking API changes.

  • Removed implicit dplyr dependency via purrr:::map_dfr() (thanks @jimhester, #324).

  • Added required minimal version dependency for purr (>= 0.2.3) (#338).

  • We rely on the tibble package which was optimized for speed in v1.4.2 so styler should run ~2x as fast (#348). For that reason, styler now depends on tibble >= 1.4.2.

  • In the dependency enc, a bug was fixed that removed/changed non-ASCII characters. Hence, styler now depends on enc >= 0.2 (#348).

Minor changes

  • We’re now recognizing and respecting more DSLs used in R comments: rplumber (#*, #306), shebang #/! (#345), knitr chunk headers for spinning (#+ / #-, #362).

  • Named arguments can stay on the first line if call is multi-line (#318).

  • No space anymore with tidyverse_style() after !! since with rlang 0.2, !! now binds tighter (#322), spacing around ~ (#316), no space anymore around ^ (#308).

  • Code chunks in Rmd documents that don’t use the R engine are no longer formatted (#313).

  • Various bug fixes and edge case improvements.

Thanks to all contributors for patches, issues and the like: @devSJR, @klrmlr, @yutannihilation, @samhinshaw, @martin-mfg, @jjramsey, @RMHogervorst, @wlandau, @llrs, @aaronrudkin, @crew102, @jkgrain, @jennybc, @joranE.

Initial release.


These are functions used to style code. They style a directory, a whole package, a file or a string.

style_dir(path = ".", 
  ..., style = tidyverse_style, transformers = style(...), 
  filetype = "R", recursive = TRUE, exclude_files = NULL

style_pkg(pkg = ".", 
  ..., style = tidyverse_style, transformers = style(...), filetype = "R", 
  exclude_files = "R/RcppExports.R"

  ..., style = tidyverse_style, transformers = style(...)

style_text(text, ..., style = tidyverse_style, transformers = style(...))

style guides

These functions are the style guides implemented.

  scope = "tokens", 
  strict = TRUE, 
  indent_by = 2, 
  start_comments_with_one_space = FALSE, 
  reindention = tidyverse_reindention(), 
  math_token_spacing = tidyverse_math_token_spacing()

style guide creators

This function is used to create a style guide.

  initialize = default_style_guide_attributes, 
  line_break = NULL, 
  space = NULL, 
  token = NULL, 
  indention = NULL, 
  use_raw_indention = FALSE, 
  reindention = tidyverse_reindention()


These are helper functions used to specify the style guides in use.

  zero = NULL, 
  one = c("'+'", "'-'", "'*'", "'/'", "'^'")

  regex_pattern = NULL, 
  indention = 0, 
  comments_only = TRUE