diff --git a/dotfiles/gitconfig.d/aliases b/dotfiles/gitconfig.d/aliases
new file mode 100644
index 0000000..766b723
--- /dev/null
+++ b/dotfiles/gitconfig.d/aliases
@@ -0,0 +1,9 @@
+[alias]
+commit-assumed = "!f() { \
+        file=\"$1\"; \
+        shift; \
+        git update-index --no-assume-unchanged \"$file\" && \
+        git add \"$file\" && \
+        git commit \"$@\" && \
+        git update-index --assume-unchanged \"$file\"; \
+    }; f"
diff --git a/dotfiles/ssh/rc b/dotfiles/ssh/rc
index 0c605e8..8745f16 100755
--- a/dotfiles/ssh/rc
+++ b/dotfiles/ssh/rc
@@ -9,7 +9,7 @@ if [ -S "${SSH_AUTH_SOCK}" ] ; then
   SSH_REMOTE_AUTH_SOCK="${SSH_AUTH_SOCK}"
   export SSH_REMOTE_AUTH_SOCK
   # Always update the symlink to the latest session's socket.
-  # This ensures that tmux (which uses the static path) always points to a 
+  # This ensures that tmux (which uses the static path) always points to a
   # current agent.
   mkdir -p "$(dirname "${REMOTE_LINK}")"
   ln -sf "${SSH_AUTH_SOCK}" "${REMOTE_LINK}"