--- a/.gitignore
+++ b/.gitignore
@@ -6,11 +6,14 @@
 *.lisp-temp
 *.tmp
 *~
+*.diff
+*.patch
 .gdb_history
 output
 obj
 local-target-features.lisp-expr
-customize-target-features.lisp
+customize-target-features.*
+customize-backend-subfeatures.*
 whitespace-stamp
 src/assembly/target
 src/compiler/assembly