initial version to check for staged changes

pre-commit

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+set -eu
+
+# This also works
+# $(git rev-parse --show-toplevel)/.git/hooks/pre-commit.sample
+
+sample_hook="${PWD%"$GIT_PREFIX"}"/.git/hooks/pre-commit.sample
+
+if test -x "$sample_hook"
+then
+		$sample_hook
+fi
+
+current_dir=$(dirname "$0")
+
+"$current_dir"/pre-commit-staged-check.sh
+
+# vim: set ft=sh

pre-commit-staged-check.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+
+case $GIT_INDEX_FILE in
+		*.lock)
+				if GIT_INDEX_FILE=${GIT_INDEX_FILE%.lock} git status --porcelain | grep '^M'
+				then
+						echo "Error: Found both staged and unstaged changes when trying to commit with 'git commit -a'."
+						echo "Do two seperate commits with, 'git commit -m ...' and 'git commit -a -m ...'"
+						echo "Or 'git reset .' and then 'git commit -a -m ...' for a single commit"
+						exit 1
+				fi
+				;;
+esac