Line breaks and named arguments

[lorenzwalthert]

Line breaks should not be forced after the opening brace of a function call if the call follows a structure like

map(x, c, 
  furher_arg = 3,
  another_arg = 2:4
)

Reference: tidyverse/style#39

Hence, when modifying line breaks after (, one has to check the structure and only break the line before the first named argument.
More concretely,

• if expression is a function call,
• and expression spans over multiple lines
• find the first named argument and add a line break before it.
• If no named argument occurs (but there is at least one argument), break after opening brace.

[lorenzwalthert]

Not super urgent since line breaks after opening brace for function calls is only effective with strict = TRUE (#198).

[lorenzwalthert]

It sees to me that we probably underestimated the priority of this issue in the light of tidyverse/tidyr#393