NEWS.md

cli (development version)

• The format of the URI part of "run", "help" and "vignette" hyperlinks can now be configured via options and env vars (@jennybc, #739).

• cli_progress_bar() now accepts total = Inf or -Inf which mimics the behavior of when total is NA.

• num_ansi_colors() now does not warn in Emacs if the INSIDE_EMACS environment variable is not a proper version number (@rundel, #689).

• ansi_collapse() and inline collapsing now uses last as the separator (without the serial comma) for two-element vectors if sep2 is not given (@rundel, #681).

• ansi_collapse() is now correct for length-1 vectors with style "head" if width is specified (@rundel, #590).

• New hash_xxhash() etc. functions to calculate the xxHash of strings, raw vectors, objects, files.

cli 3.6.3

• cli now builds on ARM Windows.

• "Solarized Dark" is now the default syntax highlighting theme in terminals.

• The {.obj_type_friendly} inline style now only shows the first class name (#669 @olivroy).

• Syntax highlighting now does not fail in RStudio if the rstudioapi package is not installed (#697).

cli 3.6.2

• ansi_collapse(x, trunc = 1, style = "head") now indeed shows one element if length(x) == 2, as documented (@salim-b, #572).

• ansi_collapse() gains a sep2 argument to specify a seperate separator for length-two inputs. It defaults to " and " which, in conjunction with the other defaults, produces a collapsed string that fully adheres to the serial comma rules. (@salim-b, #569)

• ansi_string() is now an exported function (@multimeric, #573).

cli 3.6.1

• ANSI hyperlinks are now turned off on the RStudio render plane (#581).

cli 3.6.0

• The progressr progress handler now reports progress correctly (@HenrikBengtsson, #558).

• New hash_*sha1() functions to calculate the SHA-1 hash of strings, objects, files.

• cli now shows progress bars after one second by default, if they are less than half way at the point. (Or after two seconds, unconditionally, as before.) See the the cli.progress_show_after option in ?cli-config for details (#542).

• format_inline() now has a new argument keep_whitespace, and it keeps whitespace, including newline and form feed characters by default.

cli 3.5.0

• New keypress() function to read a single key press from a terminal.

• New function pretty_print_code() to print function objects with syntax highlighting at the R console.

• col_* and bg_* functions how handle zero-length input correctly (#532).

• New function ansi_collapse() to collapse character vectors into a single string.

• ansi_strtrim() now handles some edge cases better, when ellipsis has length zero, and when it is wider than width.

• New hash_file_md5() function to calculate the MD5 hash of one or more files.

cli 3.4.1

• cli has better error messages now.

• New format_inline() argument: collapse, to collapse multi-line output, potentially because of \f characters.

cli 3.4.0

• New experimental styles to create ANSI hyperlinks in RStudio and terminals that support them. See ?cli::links for details (#513).

• Expressions that start and end with a {} substitution are now styled correctly. E.g. {.code {var1} + {var2}} (#517).

• New {.obj_type_friendly} inline style to format the type of an R object in a user friendly way (#463).

• Improved vector collapsing behavior. cli now shows both the beginning and end of the collapsed vector, by default (#419).

• Nested cli() calls work now (#497).

• Return values now work as they should within cli() calls (#496).

• Style attributes with underscores have new names with dashes instead: vec_sep, vec_last, vec_trunc, string-quote. The old names still work, but the new ones take precedence (#483).

• cli now does not crash at the end of the R session on Arm Windows (#494; @kevinushey)

• Vectors are truncated at 20 elements now by default, instead of 100 (#430).

• 20 new spinners from the awesome cli-spinners package, and from @HenrikBengtsson in #469. Run this to demo them, some need UTF-8 and emoji support:

  new <- c("dots13", "dots8Bit", "sand", "material", "weather", "christmas",
    "grenade", "point", "layer", "betaWave", "fingerDance", "fistBump",
    "soccerHeader", "mindblown", "speaker", "orangePulse", "bluePulse",
    "orangeBluePulse", "timeTravel", "aesthetic", "growVeriticalDotsLR",
    "growVeriticalDotsRL", "growVeriticalDotsLL", "growVeriticalDotsRR")
  demo_spinners(new)

• cli exit handlers are now compatible again with the withr package (#437).

• cli functions now keep trailing \f characters as newlines. They also keep multiple consecutive \f as multiple newlinees (#491).

• {} substitutions within inline styles are now formatted correctly. E.g. {.code download({url})} will not add backticks to url, and {.val pre-{x}-post} will format the whole value instead of x. (#422, #474).

• cli now replaces newline characters within {.class ... } inline styles with spaces. If the cli.warn_inline_newlines option is set to TRUE, then it also throws a warning. (#417).

• code_highlight now falls back to the default theme (instead of no theme) for unknown RStudio themes (#482, @rossellhayes).

• cli_abort() now supplies .frame to abort(). This fixes an issue with the .internal = TRUE argument (r-lib/rlang#1386).

• cli now does a better job at detecting the RStudio build pane, job pane and render pane, and their capabilities w.r.t. ANSI colors and hyperlinks. Note that this requires a daily build of RStudio (#465).

• New functions for ANSI strings: ansi_grep(), ansi_grepl(), ansi_nzchar(). They work like the corresponding base R functions, but handle ANSI markup.

• style_hyperlink() (really) no longer breaks if the env variable VTE_VERSION is of the form \d{4}, i.e., 4 consecutive numbers (#441, @michaelchirico)

• cli_dl() and its corresponding cli_li() can now style the labels.

• The behavior cli's inline styling expressions is now more predictable. cli does not try to evaluate a styled string as an R expression any more. E.g. the meaning of "{.emph +1}" is now always the "+1", with style .emph, even if an .emph variable is available and the .emph + 1 expression can be evaluated.

• Functions that apply bright background colors (e.g. bg_br_yellow()) now close themselves. They no longer format text after the end of the function (#484, @rossellhayes).

cli 3.3.0

• style_hyperlink() no longer breaks if the env variable VTE_VERSION is of the form \d{4}, i.e., 4 consecutive numbers (#441, @michaelchirico)

• ansi_*() functions support ANSI hyperlinks again (#444).

• Turning off ANSI colors via the cli.num_colors option or the R_CLI_NUM_COLORS or the NO_COLOR environment variable now also turns off ANSI hyperlinks (#447).

• symbol now only has two variants: UTF-8 and ASCII. There are no special variants for RStudio and Windows RGui any more (#424).

cli 3.2.0

Breaking change

• The cli_theme_dark option is now known as cli.theme_dark, to be consistent with all other cli option names (#380).

Other changes

• The preferred names of the S3 classes ansi_string, ansi_style, boxx, rule and tree now have cli_ prefix: cli_ansi_string, etc. This will help avoiding name conflicts with other packages eventually, but for now the old names are kept as well, for compatibility.

• cli_abort() has been updated to work nicely with rlang 1.0. The default call and backtrace soft-truncation are set to .envir (which itself is set to the immediate caller of cli_abort() by default).

  Line formatting now happens lazily at display time via rlang::cnd_message() (which is called by the conditionMessage() method for rlang errors).

• New hash_sha256() function to calculate SHA-256 hashes. New hash_raw_*(), hash_obj_*() and hash_file_*() functions to calculate various hashes of raw vectors, R objects and files.

• You can use the new cli.default_num_colors option to set the default number of ANSI colors, only if ANSI support is otherwise detected. See the details in the manual of num_ansi_colors().

• You can set the new ESS_BACKGROUND_MODE environment variable to dark to indicate dark mode.

• cli now handles quotes and comment characters better in the semantion cli_*() functions that perform glue string interpolation (#370).

cli 3.1.1

• style_hyperlink() gains a params= argument (#384).

cli 3.1.0

Breaking changes

• The C progress bar API now uses double instead of int as the data type of the progress units (#335).

New features

• Several improvements and changes in the ansi_*() functions:

  • most ansi_*() functions are now implemented in C and they are much faster (#316).
  • they handle NA values better.
  • many functions now use UTF-8 graphemes by default instead of code points. E.g. ansi_nchar() counts graphemes, etc.
  • they convert their input to UTF-8 and always return UTF-8 encoded strings.
  • new function ansi_simplify() to remove superfluous ANSI tags.
  • new function ansi_html() to convert ANSI-highlighted strings to HTML.
  • ansi_has_any() and ansi_strip() now have sgr and csi arguments to look for SGR tags, CSI tags, or both.

• New functions that handle UTF-8 encoded strings correctly: utf8_graphemes(), utf8_nchar(), utf8_substr().

• Support for palettes, including a colorblind friendly palette. See ?ansi_palettes for details.

• True color support: num_ansi_colors() now detects terminals with 24 bit color support, and make_ansi_style() uses the exact RGB colors on these terminals (#208).

• The new col_br_*() and bg_br_() functions create bright versions of eight base ANSI colors (#327).

• New function code_highlight() to syntax highlight R code. It supports several themes out of the box, see code_theme_list() (#348).

• New functions for hashing: hash_animal(), hash_emoji() and hash_md5().

• New diff_chr() and diff_str() functions to calculate the difference of character vectors and letters of strings.

Smaller improvements

• Progress bars with clear = FALSE now print the last, completed, state properly.

• The progress bar for Shiny apps now handles output from cli_progress_output().

• Progress variables in C format_done strings work correctly now (#337).

• cli_dl() now works with an empty description, and gives a better error for invalid input (#347).

• rule() is now works better if the labels have ANSI markup.

• cli_spark objects now have format() and print() methods.

• cli_process_done() now does not error without a process (#351).

• ANSI markup is now supported in RStudio jobs (#353).

• The lack of ANSI support is now again correctly detected if there is an active sink() (#366).

cli 3.0.1

• ansi_strtrim() now correctly keeps NA values (#309).

• format_inline() now uses the correct environment (@rundel, #314).

cli 3.0.0

• New functions for progress bars, please see the new articles at https://cli.r-lib.org/articles/ for details.

• New cli_abort(), cli_warn() and cli_inform() functions, to throw errors with cli pluralization and styling.

• New format_inline() function to format a cli string without emitting it (#278).

cli 2.5.0

• New style_no_*() functions to locally undo styling. New col_none() and bg_none() functions to locally undo text color and background color.

• It is now possible to undo text and background color in a theme, by setting them to NULL or "none".

• cli_memo() was renamed to cli_bullets(), as it is by default formatted as a bullet list (#250).

• New ansi_toupper(), ansi_tolower and ansi_chartr() functions, the ANSI styling aware variants of toupper(), tolower() and chartr() (#248).

• New test_that_cli() helper function to write testthat tests for cli output.

• tree() now does not produce warnings for tibbles (#238).

• New inline style: .cls to format class names, e.g. "{.var fit} must be an {.cls lm} object".

cli 2.4.0

• New cli_memo() function to create a list of items or tasks.

• New cli::cli() function to create a single cli message from multiple cli calls (#170).

• cli now highlights weird names, e.g. path names with leading or trailing space (#227).

• Styling is fixed at several places. In particular, nested lists should be now formatted better (#221).

• New spark_bar() and spark_line() functions to draw small bar or line charts.

cli 2.3.1

• ANSI color support detection works correctly now in older RStudio, and also on older R versions.

• cli_h1(), cli_h2() and cli_h3() now work with multiple glue substitutions (#218).

cli 2.3.0

• boxx() now correctly calculates the width of the box for non-ASCII characters.

• New ansi_trimws() and ansi_strwrap() functions, they are similar to trimws() and strwrap() but work on ANSI strings.

• New ansi_columns() function to format ANSI strings in multiple columns.

• ansi_substr(), ansi_substring(), ansi_strsplit(), ansi_align() now always return cli_ansi_string objects.

• ansi_nchar(), ansi_align(), ansi_strtrim() and the new ansi_strwrap() as well handle wide Unicode correctly, according to their display width.

• boxx() can now add headers and footers to boxes.

cli 2.2.0

• New style_hyperlink() function to add hyperlinks, on terminals that support them.

• cli_format_method() now works properly in knitr, and other environments that catch message conditions (#159).

• ANSI strings created by col_*, bg_* and style_* now also add the character class to the result. This fixes issues with code that expect character objects.

• New functions to manipulate ANSI strings: ansi_aling(), ansi_has_any(), ansi_nchar(), ansi_regex(), ansi_strip(), ansi_strsplit(), ansi_substr(), ansi_substring().

cli 2.1.0

• New cli_vec() function to allow easier formatting of collapsed vectors. It is now also possible to use styling to set the collapsing parameters (#129).

• New pluralize() function to perform pluralization without generating cli output (#155).

• console_width() works better now in RStudio, and also in terminals.

• Styling of verbatim text work properly now (#147, @tzakharko).

• Messages (i.e. message conditions) coming from cli now have the cliMessage class, so you can easily suppress them without suppressing other messages (#156).

• cli prints the output to stderr() now, if there is an output or message sink. This is to make interactive and non-interactive sessions consistent (#153).

• Pluralization works correctly now if the last alternative is the empty string (#158).

• cli now caches the result of the dark background detection in iTerm on macOS. Reload cli to delete the cache (#131).

• The is_dynamic_tty(), is_ansi_tty() and ansi_hide_cursor() and related functions now default to the "auto" stream, which is automatically selected to be either stdout() or stderr(). See the manual for details (#144).

• The default theme now quotes file names, paths, email addresses if they don't start or end with an alphanumeric character or a slash. This is to make it easier to spot names that start or end with a space (#167).

• make_spinner() clears the line properly now (@tzakharko, #164).

• Semantic cli functions now automatically replace Unicode non-breaking space characters (\u00a0) with regular space characters, right before output. They are still used to calculate the line breaks, but not outputted (#161).

• Progress bars now respect is_dynamic_tty() and do not output \r when this is false (@jimhester, #177)

cli 2.0.2

• The status bar now does not simplify multiple spaces by a single space.

• cli now does not crash if it fails to detect whether the RStudio theme is a dark theme (#138).

• cli now works better with wide Unicode characters, for example emojis. In particular, a status bar containing emojis is cleared properly (#133).

• The status bar now does not flicker when updated, in terminals (#135).

cli 2.0.1

• Symbols (symbol$*) are now correctly printed in RStudio on Windows (#124).

• The default theme for cli_code() output looks better now, especially in RStudio (#123).

• Remove spurious newline after a cli_process_start() was cleared manually, and also at the end of the function.

• Use Oxford comma when listing 3 or more items (@jonocarroll, #128).

cli 2.0.0

Semantic command line interface tools

cli 2.0.0 has a new set of functions that help creating a CLI using a set of higher level elements: headings, paragraphs, lists, alerts, code blocks, etc. The formatting of all elements can be customized via themes. See the "Building a semantic CLI" article on the package web site: https://cli.r-lib.org

Bug fixes:

• Fix a bug in is_dynamic_tty(), setting R_CLI_DYNAMIC="FALSE" now properly turns dynamic tty off (#70).

cli 1.1.0

• cli has now functions to add ANSI styles to text. These use the crayon package internally, and provide a simpler interface. See the col_*, bg_*, style_* and also the make_ansi_style() and combine_ansi_styles() functions (#51).

• New is_dynamic_tty() function detects if \r should be used for a stream (#62).

• New is_ansi_tty() function detects if ANSI control sequences can be used for a stream.

• New ansi_hide_cursor(), ansi_show_cursor() and ansi_with_hidden_cursor() functions to hide and show the cursor in terminals.

• New make_spinner() function helps integrating spinners into your functions.

• Now symbol always uses ASCII symbols when the cli.unicode option is set to FALSE.

1.0.1

• New cli_sitrep() function, situation report about UTF-8 and ANSI color support (#53).

• Fall back to ASCII only characters on non-Windows platforms without UTF-8 support, and also in LaTeX when running knitr (#34).

cli 1.0.0

First public release.