From 49c8b284b9a6a8cfbb6e65c0813c60d1d1f106f5 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Paul=20H=C3=A4nsch?= <paul@plutz.net>
Date: Wed, 5 Jul 2023 14:57:34 +0200
Subject: [PATCH] min, max headline level arguments for toc macro

---
 macros/toc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/macros/toc b/macros/toc
index 0acec76..e68ac6f 100755
--- a/macros/toc
+++ b/macros/toc
@@ -12,8 +12,13 @@ else
   md() { cat; }
 fi
 
+min="$1" max="$2"
+[ "$min" -ge 1 -a "$min" -le 6 ] || min=1
+[ "$max" -ge "$min" ] || max="$min"
+[ "$max" -le 6 ] || max=6
+
 md |sed -nE '
   1i<ul class="macro toc">
-  s;^.*<section class="(h[1-6])( [^"]+)?" id="([^"]*)"><h[1-6]>(([^<]|<[^aA]|<[aA][^ ])+)(<a class="anchor" href="[^>]*"></a>)?</h[1-6]>$;<li class="toc \1"><a href="#\3">\4</a></li>;p
+  s;^.*<section class="(h[1-6])( [^"]+)?" id="([^"]*)"><h['${min}-${max}']>(([^<]|<[^aA]|<[aA][^ ])+)(<a class="anchor" href="[^>]*"></a>)?</h[1-6]>$;<li class="toc \1"><a href="#\3">\4</a></li>;p
   $i</ul>
 '
-- 
2.39.2