diff --git a/.arclint b/.arclint
--- a/.arclint
+++ b/.arclint
@@ -1,8 +1,7 @@
 {
   "exclude": [
     "(^externals/)",
-    "(^webroot/rsrc/externals/(?!javelin/))",
-    "(/__tests__/data/)"
+    "(^webroot/rsrc/externals/(?!javelin/))"
   ],
   "linters": {
     "chmod": {
diff --git a/.editorconfig b/.editorconfig
--- a/.editorconfig
+++ b/.editorconfig
@@ -3,9 +3,29 @@
 [*]
 indent_style = space
 indent_size = 2
+end_of_line = lf
 charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
+max_line_length = 80
+
+[README.md]
+max_line_length =
+
+[resources/sql/patches/*.sql]
+max_line_length =
+
+[scripts/install/*.sh]
+max_line_length =
+
+[src/applications/differential/parser/__tests__/data/*.diff]
+trim_trailing_whitespace = false
+
+[src/applications/differential/parser/__tests__/messages/*.txt]
+max_line_length =
+
+[src/applications/diffusion/ssh/__tests__/hgwiredata/*.txt]
+max_line_length =
 
 [externals/**]
 ; Use editor default (possible autodetection).
diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,3 @@
-
                                  Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -28,4 +28,4 @@
 We do not accept pull requests through GitHub. If you would like to contribute code, please read our [Contributor's Guide](https://secure.phabricator.com/book/phabcontrib/article/contributing_code/) for more information.
 
 **LICENSE**
-Phabricator is released under the Apache 2.0 license except as otherwise noted.
\ No newline at end of file
+Phabricator is released under the Apache 2.0 license except as otherwise noted.