update git hook 'pre-commit' to select between YAML or TOML frontmatter

.githooks/pre-commit

@@ -2,9 +2,13 @@
 # Contents of .git/hooks/pre-commit
 # Replace `last_modified_at` timestamp with current time
 # https://mademistakes.com/notes/adding-last-modified-timestamps-with-git/
+# enhanced the script to either update the YAML or TOML frontmatter (as i used both O_o)
 
 git diff --cached --name-status | egrep -i "^(A|M).*\.(md)$" | while read a b; do
-  cat $b | sed "/---.*/,/---.*/s/^lastmod:.*$/lastmod: $(date -u "+%Y-%m-%dT%H:%M:%S%z")/" > tmp
+  # YAML or TOML frontmatter?
+  (egrep "^---$" $b > /dev/null) && (cat $b | sed "/---.*/,/---.*/s/^lastmod:.*$/lastmod: $(date -u "+%Y-%m-%dT%H:%M:%S%z")/" > tmp)
+  (egrep "^\+\+\+$" $b > /dev/null) && (cat $b | sed "/+++.*/,/+++.*/s/^lastmod.*$/lastmod = '$(date -u "+%Y-%m-%dT%H:%M:%S%z")'/" > tmp)
   mv tmp $b
   git add $b
 done
+