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# CHANGES IN xfun VERSION 0.48 - Added utilities for HTML tags: `html_tag()`, `html_escape()`, `html_escape()`, and `html_view()`. Removed the soft dependency on the **htmltools** package accordingly. - `base_pkgs()` is faster now: it calls `tools::standard_package_names()` if the function exists (R >= 4.4.0), otherwise it just returns a constant vector of base package names (thanks, @arnaudgallou, #91). - Added a function `mime_type()` to obtain the MIME types of files via `mime::guess_type()` if **mime** is installed, otherwise it will call `tools:::mime_type()`, and fall back to using a system command (e.g., `file --mime-type`) to obtain the types. - Added a function `file_rename()` to deal with `file.rename()` failures by calling `file.copy()` (thanks, @Giqles @katrinabrock, rstudio/bookdown#804). - `new_app()` will use `utils::browseURL()` to open the app if `options('viewer')` is not configured (thanks, @AlbertLei, yihui/litedown#29). - Added a method `record_print.record_asis()` to return the object as is. # CHANGES IN xfun VERSION 0.47 - Added functions `lazy_save()` and `lazy_load()` to save objects to files and lazy-load them. - Fixed a bug in `record(dev = svglite::svglite)` that misplaced plots when low-level plot functions are used (thanks, @liao961120, yihui/litedown#17). - Specified the lowest R version required (v3.2.0) for this package. # CHANGES IN xfun VERSION 0.46 - `md_table()` should add a vertical ellipsis to row names when rows are truncated by the `limit` argument. - `session_info()` recognizes Positron now (thanks, @chuxinyuan, #89). # CHANGES IN xfun VERSION 0.45 - For `record()` with `verbose = 1` or `2`, invisible `NULL` is no longer printed. - `Rscript_call()` will show the actual error message (if an error occurred) during calling the function in a new R session. # CHANGES IN xfun VERSION 0.44 - Added a function `cache_exec()` to cache the execution of an expression either in memory or on disk. It is much more general and flexible than `cache_rds()`. For example, it supports custom reading/writing methods for cache files, and can load locally created variables in the expression while loading cache. - Added an argument `cache` to `record()` to make it possible to enable caching. - Added arguments `message` and `warning` to `record()` to decide whether messages and warnings should be recorded. - Changed the default value of the argument `error` of `record()` from `FALSE` to `NA`. Now `FALSE` means to suppress error messages, and `NA` means to throw errors normally. This is for consistency with the `message` and `warning` arguments. - Added an S3 generic function `record_print()`, which is similar to `knitr::knit_print()` but for the purpose of printing visible values in `record()`. - The `record()` function gained new arguments `print` and `print.args` to support custom printing functions and arguments. - Added a function `md_table()`, which is a minimal Markdown table generator. - Exported the internal function `md5()` to calculate the MD5 checksums of R objects. The function is essentially a workaround for `tools::md5sum()` (see HenrikBengtsson/Wishlist-for-R#21). - For `fenced_block()`, a space is added between the backticks and the language name, e.g., ```` ```r ```` has become ```` ``` r ```` now. This will affect snapshot tests based on Markdown ([an example](yihui/knitr-examples@931e0a2)). - Added a shorthand `fenced_div()` for `fenced_block(char = ':')`. - `write_utf8()` returns the `con` argument (typically a file path) now. Previously, it returns `NULL`. - Added an experimental function `new_app()` to create a local web application. - The returned value of `yaml_body()` contains a new element `lines` in the list indicating the line numbers of YAML metadata if exists. - Removed the `skip` argument from `split_source()`. - For `split_source(line_number = TRUE)`, the attribute name for line numbers in the returned value was changed from `line_start` (a single starting line number) to `lines` (both the starting and ending numbers). - Fixed an edge case in `prose_index()`, in which inline code was incorrectly recognized as a code block fence. # CHANGES IN xfun VERSION 0.43 - Added a function `upload_imgur()`, which was adapted from `knitr::imgur_upload()`. The latter will call the former in the future. `xfun::upload_imgur()` allows users to choose whether to use the system command `curl` or the R package **curl** to upload the image. It also has a new argument `include_xml` to specify whether the XML response needs to be included in the returned value. - Added a function `fenced_block()` to create a fenced block in Markdown (thanks, @cderv, yihui/knitr#2331). The block can be either a code block or a fenced Div. - Fixed a bug in `xfun::record()` when the argument `verbose = 1` or `2`.
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