Improve multi-language support

md2tex

@@ -5,6 +5,7 @@ BEGIN {
   tag("documentclass[a4paper]{article}")
 #  tag("special{papersize=210mm,297mm}")
   tag("usepackage[margin=1in]{geometry}")
+  tag("usepackage[utf8]{inputenc}")
   tag("setlength{\\parskip}{\\baselineskip}%")
   tag("setlength{\\parindent}{0pt}%")
   tag("usepackage{listings}")
@@ -82,9 +83,12 @@ function inline(text) {
   }
 }
 
-/^## / {
+/^##* / {
+  d=length($1)
+  t="section"
+  for (i=3; i<=d; i++) t="sub"t
   gsub(/^#* /, "", $0)
-  tag("section{" $0 "}")
+  tag(t"{" $0 "}")
   next
 }