diff --git a/.clang-format b/.clang-format
index 12a89f95f9..de1c8b5c77 100644
--- a/.clang-format
+++ b/.clang-format
@@ -6,6 +6,8 @@
 
 # Use tabs whenever we need to fill whitespace that spans at least from one tab
 # stop to the next one.
+#
+# These settings are mirrored in .editorconfig.  Keep them in sync.
 UseTab: Always
 TabWidth: 8
 IndentWidth: 8
diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000000..42cdc4bbfb
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,16 @@
+[*]
+charset = utf-8
+insert_final_newline = true
+
+# The settings for C (*.c and *.h) files are mirrored in .clang-format.  Keep
+# them in sync.
+[*.{c,h,sh,perl,pl,pm}]
+indent_style = tab
+tab_width = 8
+
+[*.py]
+indent_style = space
+indent_size = 4
+
+[COMMIT_EDITMSG]
+max_line_length = 72