Don't get "no covariates" in fixed effects regression

[maswiebe]

I'm using fixest::feols to run a fixed effects regression, but the "no covariates" row doesn't show up.

library(dplyr)
library(fixest)
library(specr)

test_formula <- function(formula,data) {
  formula <-as.formula(paste0(formula, "|group1")) # fixed effects for group1
  feols(formula,data)
}
results <- run_specs(
  df = example_data,
  y = c("y1", "y2"),
  x = c("x1", "x2"),
  model = 'test_formula',
  controls = c("c1", "c2")
)

plot_specs(results)

I notice that it works if the regression formula includes a variable before the fixed effects section:

test_formula2 <- function(formula,data) {
  formula <-as.formula(paste0(formula, "+ c3 |group1")) # control for c3 in all specifications
  feols(formula,data)
}
results2 <- run_specs(
  df = dplyr::mutate(example_data, c3 = runif(dplyr::n())),
  y = c("y1", "y2"),
  x = c("x1", "x2"),
  model = 'test_formula2',
  controls = c("c1", "c2")
)

plot_specs(results2)

[masurp]

I cannot recreate the error using the newest development version of specr (v1.0.0)

library(dplyr)
library(fixest)
library(specr)

test_formula <- function(formula,data) {
  formula <-as.formula(paste0(formula, "|group1")) # fixed effects for group1
  feols(formula,data)
}
results <- run_specs(
  df = example_data,
  y = c("y1", "y2"),
  x = c("x1", "x2"),
  model = 'test_formula',
  controls = c("c1", "c2")
)

plot_specs(results)

Also using the new framework, it produces an appropriate plot:

specs <- setup(
  data = example_data,
  y = c("y1", "y2"),
  x = c("x1", "x2"),
  model = 'test_formula',
  controls = c("c1", "c2")
)


results <- specr(specs)

plot(results)