remacsindentationess

Emacs ESS indent after %>%

For R code my current emacs ESS style is C++ which results in

worst <- flights_sml %>%
    group_by(year, month, day)

I.e. the continuation is indented 4 spaces after %>%. I'd like it to be 2 spaces.

How can I do that?

Solution

  • It's not entirely clear what you want. If only want 2 spaces in continued statements such as those after a pipe, the following should work

    (setq ess-offset-continued '(straight 2))

    So, indentation would still be default of 4 spaces as set in the C++ style, eg. results would look like

    worst <- flights_sml %>%
  group_by(year, month, day)

f <- function(x) {
    x
}

    Otherwise, if you always want 2 space offsets

    (setq ess-indent-offset 2)

    You can customize these variables in your mode hook, eg.

    (defun my-R-hook ()
  (setq-local ess-style 'C++)
  (setq-local ess-offset-continued '(straight 2)))

    See the documentation for ess-offset-continued and ess-style-alist for further details.