diff --git a/sample_files/.editorconfig b/sample_files/.editorconfig
index 198e02a58..4c2dab460 100644
--- a/sample_files/.editorconfig
+++ b/sample_files/.editorconfig
@@ -1,5 +1,5 @@
-# Defaults for all kinds of source code
-[*]
+# Configuration for known file extensions
+[*.{css,js,less,md,py,rst,sass,scss,xml,yaml,yml}]
 charset = utf-8
 end_of_line = lf
 indent_size = 4
@@ -7,21 +7,11 @@ indent_style = space
 insert_final_newline = true
 trim_trailing_whitespace = true
 
-# Specific language overrides
 [*.{yml,yaml,rst,md}]
 indent_size = 2
 
-# External web libs should be left untouched
-[*/static/lib/**]
-charset = unset
-end_of_line = unset
-indent_size = unset
-indent_style = unset
-insert_final_newline = false
-trim_trailing_whitespace = false
-
-# External web libs should be left untouched
-[*/static/src/lib/**]
+# Do not configure editor for libs and autogenerated content
+[*/static/{lib,src/lib}/**,*/static/description/index.html,*/readme/../README.rst]
 charset = unset
 end_of_line = unset
 indent_size = unset