Use dotter

local/bin/opout

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# opout: "open output": A general handler for opening a file's intended output,
+# usually the pdf of a compiled document.  I find this useful especially
+# running from vim.
+
+basename="${1%.*}"
+
+case "${*}" in
+*.tex | *.sil | *.m[dse] | *.[rR]md | *.mom | *.[0-9])
+	target="$(getcomproot "$1" || echo "$1")"
+	setsid -f xdg-open "${target%.*}".pdf >/dev/null 2>&1
+	;;
+*.html) setsid -f "$BROWSER" "$basename".html >/dev/null 2>&1 ;;
+*.sent) setsid -f sent "$1" >/dev/null 2>&1 ;;
+esac