Add a .locale argument to arrange() and implement dplyr_locale()
#6263
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This allows us to isolate changes in this PR to just `arrange()`, keeping other usage of `vec_order()` the same for now.
Even though these are superseded, this should help ease the transition a little, since without this argument it would be difficult to choose a different locale, and if stringi wasn't installed then you'd unconditionally get a warning you couldn't silence
With the intention being that it shouldn't show up on the pkgdown site reference page. We expect most people to get to this page through `arrange()`.
This is reproducible across all R sessions and OSes, and is much faster, which makes it a good default. It will also make the default of `arrange()` continue to align with what `group_by() + summarize()` returns, since that will also unconditionally use the C locale.
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This is a technical detail of `vec_order_radix()` so it is better to keep the conversion close to where we actually call it. Should make calling `arrange_rows()` on its own a little easier too.
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Supersedes and Closes #5942 (once again. It just got too out of date to be useful.)
Closes #4962
Closes #5090
Part of #5808
This PR adds a
.localeargument toarrange(), with 3 possible options:dplyr_locale(), the default. See below."en_US"or"fr". This requires stringi."C", for sorting in the C locale. This does not require stringi.dplyr_locale()is a new exported helper and returns a string representing the default locale to use. It has the following properties:"C"dplyr.localeoption is set to a stringi locale identifier or"C", that overrides the above default behavior.This is a breaking change, as we no longer respect the
LC_COLLATEoption."1bfa0724-c563-48de-9068-51476e19cf82"(Update - no changes to worse in revdeps)