update pre-commit

scripts/git-hooks/pre-commit

@@ -1,16 +1,24 @@
-#! /bin/sh
+#!/bin/sh
 #
-# Run pre commit checks on bin/yait. Requires `shellcheck` as well as a POSIX
-# shell (duh)
+# Run pre-commit checks on bin/yait. Requires `shellcheck` and a POSIX
+# shell (duh).
+
+me=$(basename "$0")
+
+fmt() {
+    echo "${me}[$$]: $*"
+}
 
 script_path="./bin/yait"
 
 if git diff --cached --name-only | grep -q "$script_path"; then
-	if ! shellcheck "$script_path"; then
-		echo "[$0]: Syntax errors found in $script_path. Commit aborted."
+    if shellcheck --enable=all --shell=sh "$script_path"; then
+        fmt "All tests passed."
+        exit 0
+    else
+        fmt "Syntax errors found in $script_path. Commit aborted."
         exit 1
     fi
 fi
 
-echo "[$0] All Tests Pass"
 exit 0