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Wrong semantics of .env pronouns #174

lionel- opened this issue Jun 13, 2017 · 0 comments

Wrong semantics of .env pronouns #174

lionel- opened this issue Jun 13, 2017 · 0 comments


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@lionel- lionel- commented Jun 13, 2017

The .env pronouns currently refer to the environment of the outermost quosure:

inner_quo <- local({
  foo <- "foo"

outer_quo <- local({
  foo <- "bar"
  quo(identity(!! inner_quo))

#> <quosure: local>
#> ~identity(~.env$foo)

#> [1] "bar"

I think this is incorrect because inner quosures do not own the dynamic environments of outer quosures. Furthermore, this creates inconsistencies due to quosure inlining:

inlined_quo <- local({
  foo <- "bar"
  quo(!! inner_quo)

#> [1] "foo"

It should be safe to fix this behaviour as we didn't document this pronoun in dplyr's programming vignette.

lionel- added a commit to lionel-/rlang that referenced this issue Jun 29, 2017
@lionel- lionel- closed this in #202 Jun 29, 2017
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