R CMD check can only use aspell (#2424)

Fixes #2376

Author: hadley

NEWS.md

@@ -1,5 +1,8 @@
 # devtools (development version)
 
+* `aspell_env_var()` does a better job of matching R CMD check behaviour,
+  which is only to use `aspell`, not `hunspell` or `ispell` (#2376).
+
 * Installing devtools now installs pkgdown, profvis, bench, miniUI, DT, 
   and urlchecker, ensuring that you have everything needed for package
   development (#2388).

R/check.R

@@ -237,7 +237,7 @@ check_env_vars <- function(cran = FALSE, remote = FALSE, incoming = remote,
 
 aspell_env_var <- function() {
   tryCatch({
-    utils::aspell(NULL)
+    utils::aspell(NULL, program = "aspell")
     c("_R_CHECK_CRAN_INCOMING_USE_ASPELL_" = "TRUE")
   }, error = function(e) character())
 }