1 files changed, 30 insertions, 0 deletions
diff --git a/hooks/pre-commit b/hooks/pre-commit
new file mode 100755
index 0000000..317ed48
--- /dev/null
+++ b/hooks/pre-commit
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+# automatically configured by git-annex
+git annex pre-commit .
+
+# check grammar of staged Markdown files
+check_grammar() {
+    # get list of staged Markdown files (added or modified)
+    staged_files=$(git diff --cached --name-only --diff-filter=AM | grep '\.md$')
+
+    [ -z "$staged_files" ] && return 0
+
+    printf "Checking grammar of staged files.\n"
+    language_tool_python --picky $staged_files
+
+    printf "Proceed with commit? (y/n): "
+    read yn < /dev/tty
+
+    [ "$yn" == "${yn#[Yy]}" ] && return 1
+
+    return 0
+}
+
+# run grammar check
+check_grammar
+
+if [ $? -ne 0 ]; then
+    printf "Aborted.\n"
+    exit 1
+fi