Updated SC2103 (markdown)

SC2103.md

@@ -1,4 +1,4 @@
-# Consider using ( subshell ), 'cd foo||exit', or pushd/popd instead.
+# Use a ( subshell ) to avoid having to cd back.
 
 ### Problematic code:
 
@@ -24,7 +24,7 @@ or
 
     for dir in */
     do
-      cd "$dir" || continue
+      cd "$dir" || exit
       convert index.png index.jpg
       cd ..
     done
@@ -39,4 +39,4 @@ Check `cd`s exit status and/or use subshells to limit the effects of `cd`.
 
 ### Exceptions
 
-None known.
+If you set variables you can't use a subshell. In that case, you should definitely check the exit status of `cd`, which will also silence this suggestion.