Enhanced but now hopefully working.

.drone.yml

@@ -11,13 +11,14 @@ steps:
   - Rscript -e 'devtools::install_github("jimhester/lintr")'
   # Lint the document, printing output.
   - |
-    Rscript -e
-    'lintr::lint_dir(path=".", pattern=rex::rex(".", one_of("Rr"),
-    maybe("md"), end))'
+    Rscript -e 'lintr::lint_dir(
+      path=".", pattern=rex::rex(".", one_of("Rr"), maybe("md"), end)
+    )'
   # Return non-zero exit code (no output is printed).
   - |
-    Rscript -e
-    'quit(save="no",
-    status=length(
-        lintr::lint_dir(path=".", pattern=rex::rex(".", one_of("Rr"), maybe("md"), end)))
+    Rscript -e 'quit(
+      save="no",
+      status=length(
+        lintr::lint_dir(path=".", pattern=rex::rex(".", one_of("Rr"), maybe("md"), end))
+      )
     )'