Here is a simpler example:
ex <- as.name("a")
attr(ex, "test") <- 1
quote(a)
a
attr(,"test")
[1] 1
Torsten
On Thu, 6 Jul 2017, William Dunlap wrote:
The multcomp package has code in multcomp:::expression2coef that attaches the
'coef' attribute to
symbols. Since there is only one symbol object in a session with a given name,
this means that
this attaching has a global effect. Should this be quietly allowed or should
there be a warning or
an error?
E.g.,
str(quote(Education))
# symbol Education
lmod <- stats::lm(Fertility ~ ., data = datasets::swiss)
glmod <- multcomp::glht(lmod, c("Agriculture=0", "Education=0"))
str(quote(Education))
# symbol Education
# - attr(*, "coef")= num 1
Bill Dunlap
TIBCO Software
wdunlap tibco.com
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