Number >1 converted to boolean TRUE without any warning

[raffaem]

In the following example, readxl returns TRUE instead of 599, without any warnings nor errors.

This doesn't happen with xlsx, openxlsx or openxlsx2.

I understand this is related to readxl guessing the column type using the first 1000 rows, but it should return at least a warning if not an error if the data it encounters is incompatible with the column type it guessed.

test.xlsx

indf <- readxl::read_xlsx("test.xlsx")
indf %>% filter(project_id==1001) %>% pull("budget")
# returns TRUE
# should return 599