Use styler instead of formatR?

[krlmlr]

We're about to submit an update for styler to CRAN, this would be a good point to use styler in addition to/instead of formatR for styling code chunks. What's the best way to proceed, would you like to review a PR?

CC @lorenzwalthert.

[yihui]

Yes, PR please:

knitr/R/block.R

Lines 148 to 154 in 1e9a4d5

	res = try_silent(do.call(
	formatR::tidy_source, c(list(text = code, output = FALSE), options$tidy.opts)
	))
	if (!inherits(res, 'try-error')) {
	code = res$text.tidy
	} else warning('failed to tidy R code in chunk <', options$label, '>\n',
	'reason: ', res)

A chunk option like tidy.method = 'styler' should be good (defaults to formatR).

[github-actions]

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