feat: simple grep check of commit message

commit message expected in a text file passed as first arg

print help text for failure

Author: thekaveman

conventional-pre-commit.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+if ! grep -Pq '^(build|chore|ci|docs|feat|fix|perf|refactor|revert|style|test)(\([\w][\w -]+\))?!?: [\w][\s\S]+$' "$1"; then
+    echo "[Commit message] $( cat $1 )"
+    echo "
+Your commit message doesn't look like a Conventional Commit https://www.conventionalcommits.org/
+
+Conventional Commits start with one of the below types, followed by a colon, followed by the commit message:
+
+    build, chore, ci, docs, feat, fix, perf, refactor, revert, style, test
+
+Example commit message adding a feature:
+
+    'feat: add great new feature'
+
+Example commit message fixing an issue:
+
+    'fix: remove infinite loop'
+
+Optionally, include a scope in parentheses after the type for more context:
+
+    'fix(account): remove infinite loop'
+"
+    exit 1
+fi