Add SNAKE_CASE style option

[AshesITR]

I like to write variables in snake_case except when they are CONSTANTS.
To prevent the object_name_linter from complaining, I would like to allow (uppercase) "SNAKE_CASE" as an option.

[russHyde]

Could you add several tests to ensure this works as anticipated and remake the docs to ensure SNAKE_CASE is added to the help page for object_name_linter.

It looks like the regex will match "MY_var" but not "DONT_MUTATE_MY_BIG_TABLE" at present.

[AshesITR]

Thanks, will do once I have access to a RStudio instance.

[AshesITR]

@russHyde It appears that man/ is .gitignored, but locally the docs got updated to include

A subset of ‘CamelCase’, ‘camelCase’, ‘snake_case’, ‘SNAKE_CASE’, ‘dotted.case’, ‘lowercase’, ‘UPPERCASE’. A name should match at least one of these styles.

I had to manually delete man/linters.Rd, though. Roxygen didn't automatically detect the change.

[russHyde]

That's funny. I can't see man/ in the .gitignore for lintr.

[AshesITR]

Ah, the .Rd files are actually the same:

\item{styles}{A subset of
\Sexpr[stage=render, results=rd]{lintr:::regexes_rd}. A name should
match at least one of these styles.}

Anything else needs updating?

[russHyde]

lgtm. recommend merging if that's okay with you @jimhester .

[jimhester]

Merge away! Also feel free to merge other PRs in the future without needing to ping me unless you need an extra set of eyes

[russHyde]

Thanks @AshesITR .