nvim: added clearing of preview files for markdown

.local/bin/etc/nvim/mdclear

@@ -0,0 +1,13 @@
+#!/usr/bin/env sh
+
+# Clears the files created for previewing markdown files in nvim
+# based on a program by lukesmithxyz
+
+case "$1" in
+	*.md)
+	file=$(readlink -f "$1")
+	dir=$(dirname "$file")
+	base="${file%.*}"
+        find "$dir"  -maxdepth 1 -type f -regextype gnu-awk -regex "^$base\\.(html|pdf)" -delete ;;
+	*) printf "Give .md file as argument.\\n" ;;
+esac