adjusted comment on change

Author: skitsy24

R/print.data.table.R

@@ -32,9 +32,8 @@ print.data.table = function(x, topn=getOption("datatable.print.topn"),
     # Other options investigated (could revisit): Cstack_info(), .Last.value gets set first before autoprint, history(), sys.status(),
     #   topenv(), inspecting next statement in caller, using clock() at C level to timeout suppression after some number of cycles
     SYS = sys.calls()
-    # is_print_call detects whether print() was called explicitly (e.g., print(DT))
-    # vs. auto-print (e.g., just typing DT at the prompt). This distinction matters
-    # because := assignments should suppress auto-print but not explicit print() calls.
+    # is_print_call detects whether print() was called either explicitly or through autoprint,
+    # is wrapped in a promise or not to account for R 3.4/3.5.
     is_print_call = FALSE
     if (identical(SYS[[1L]][[1L]], print)) {
       is_print_call = TRUE