Add a simplistic but useful Git hook.

Author: doublep

Diff for: githooks/pre-commit

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+# This can be used in a comment as a reminder to self.
+git diff-index --cached -S "DONOTCOMMIT" HEAD --patch --exit-code ":!githooks" \
+    || { echo; echo "Have you forgotten about the “DONOTCOMMIT”?"; exit 1; }
+
+# Eldev functions can be used during development, but must not be committed.
+git diff-index --cached -S "eldev-" HEAD --patch --exit-code ":!githooks" ":!Eldev" \
+    || { echo; echo "Don't commit code relying on Eldev!"; exit 1; }