diff --git a/README.md b/README.md
index f1d6e251..48b0cf0e 100644
--- a/README.md
+++ b/README.md
@@ -328,6 +328,12 @@ upgrade notes
 * can I make copyparty download a file to my server if I give it a URL?
   * yes, using [hooks](https://github.com/9001/copyparty/blob/hovudstraum/bin/hooks/wget.py)
 
+* i want to learn python and/or programming and am considering looking at the copyparty source code in that occasion
+    ```bash
+     _|  _      __   _  _|_
+    (_| (_)     | | (_)  |_
+    ```
+
 
 # accounts and volumes
 
diff --git a/copyparty/broker_mp.py b/copyparty/broker_mp.py
index bbadc3fe..371cfa67 100644
--- a/copyparty/broker_mp.py
+++ b/copyparty/broker_mp.py
@@ -69,7 +69,7 @@ class BrokerMp(object):
 
         while procs:
             if procs[-1].is_alive():
-                time.sleep(0.1)
+                time.sleep(0.05)
                 continue
 
             procs.pop()
diff --git a/copyparty/svchub.py b/copyparty/svchub.py
index 1c41cb72..74323898 100644
--- a/copyparty/svchub.py
+++ b/copyparty/svchub.py
@@ -339,7 +339,12 @@ class SvcHub(object):
         if self.httpsrv_up != self.broker.num_workers:
             return
 
-        time.sleep(0.1)  # purely cosmetic dw
+        ar = self.args
+        for _ in range(10 if ar.ftp or ar.ftps else 0):
+            time.sleep(0.03)
+            if self.ftpd:
+                break
+
         if self.tcpsrv.qr:
             self.log("qr-code", self.tcpsrv.qr)
         else:
@@ -645,19 +650,25 @@ class SvcHub(object):
         ret = 1
         try:
             self.pr("OPYTHAT")
+            tasks = []
             slp = 0.0
 
             if self.mdns:
-                Daemon(self.mdns.stop)
+                tasks.append(Daemon(self.mdns.stop, "mdns"))
                 slp = time.time() + 0.5
 
             if self.ssdp:
-                Daemon(self.ssdp.stop)
+                tasks.append(Daemon(self.ssdp.stop, "ssdp"))
                 slp = time.time() + 0.5
 
             self.broker.shutdown()
             self.tcpsrv.shutdown()
             self.up2k.shutdown()
+
+            if hasattr(self, "smbd"):
+                slp = max(slp, time.time() + 0.5)
+                tasks.append(Daemon(self.smbd.stop, "smbd"))
+
             if self.thumbsrv:
                 self.thumbsrv.shutdown()
 
@@ -667,17 +678,19 @@ class SvcHub(object):
                         break
 
                     if n == 3:
-                        self.pr("waiting for thumbsrv (10sec)...")
+                        self.log("root", "waiting for thumbsrv (10sec)...")
 
             if hasattr(self, "smbd"):
-                slp = max(slp, time.time() + 0.5)
-                Daemon(self.kill9, a=(1,))
-                Daemon(self.smbd.stop)
+                zf = max(time.time() - slp, 0)
+                Daemon(self.kill9, a=(zf + 0.5,))
 
             while time.time() < slp:
-                time.sleep(0.1)
+                if not next((x for x in tasks if x.is_alive), None):
+                    break
 
-            self.pr("nailed it", end="")
+                time.sleep(0.05)
+
+            self.log("root", "nailed it")
             ret = self.retcode
         except:
             self.pr("\033[31m[ error during shutdown ]\n{}\033[0m".format(min_ex()))
@@ -687,7 +700,7 @@ class SvcHub(object):
                 print("\033]0;\033\\", file=sys.stderr, end="")
                 sys.stderr.flush()
 
-            self.pr("\033[0m")
+            self.pr("\033[0m", end="")
             if self.logf:
                 self.logf.close()
 
diff --git a/copyparty/web/browser.js b/copyparty/web/browser.js
index 694a6c16..cef56544 100644
--- a/copyparty/web/browser.js
+++ b/copyparty/web/browser.js
@@ -4699,6 +4699,39 @@ function hkhelp() {
 
 
 var fselgen, fselctr;
+function fselfunw(e, ae, d, rem) {
+	fselctr = 0;
+	var gen = fselgen = Date.now();
+	if (rem)
+		rem *= window.innerHeight;
+
+	var selfun = function () {
+		var el = ae[d + 'ElementSibling'];
+		if (!el || gen != fselgen)
+			return;
+
+		el.focus();
+		var elh = el.offsetHeight;
+		if (ctrl(e))
+			document.documentElement.scrollTop += (d == 'next' ? 1 : -1) * elh;
+
+		if (e.shiftKey) {
+			clmod(el, 'sel', 't');
+			msel.origin_tr(el);
+			msel.selui();
+		}
+
+		rem -= elh;
+		if (rem > 0) {
+			ae = document.activeElement;
+			if (++fselctr % 5 && rem > elh * (FIREFOX ? 5 : 2))
+				selfun();
+			else
+				setTimeout(selfun, 1);
+		}
+	}
+	selfun();
+}
 document.onkeydown = function (e) {
 	if (e.altKey || e.isComposing)
 		return;
@@ -4749,37 +4782,7 @@ document.onkeydown = function (e) {
 		if (k == 'PageUp') { d = 'previous'; rem = 0.6; }
 		if (k == 'PageDown') { d = 'next'; rem = 0.6; }
 		if (d) {
-			fselctr = 0;
-			var gen = fselgen = Date.now();
-			if (rem)
-				rem *= window.innerHeight;
-
-			function selfun() {
-				var el = ae[d + 'ElementSibling'];
-				if (!el || gen != fselgen)
-					return;
-
-				el.focus();
-				var elh = el.offsetHeight;
-				if (ctrl(e))
-					document.documentElement.scrollTop += (d == 'next' ? 1 : -1) * elh;
-
-				if (e.shiftKey) {
-					clmod(el, 'sel', 't');
-					msel.origin_tr(el);
-					msel.selui();
-				}
-
-				rem -= elh;
-				if (rem > 0) {
-					ae = document.activeElement;
-					if (++fselctr % 5 && rem > elh * (FIREFOX ? 5 : 2))
-						selfun();
-					else
-						setTimeout(selfun, 1);
-				}
-			}
-			selfun();
+			fselfunw(e, ae, d, rem);
 			return ev(e);
 		}
 		if (k == 'Space') {
@@ -5268,7 +5271,10 @@ var filecolwidth = (function () {
 			return;
 
 		lastwidth = w;
-		document.documentElement.style.setProperty('--file-td-w', w + 'em');
+		try {
+			document.documentElement.style.setProperty('--file-td-w', w + 'em');
+		}
+		catch (ex) { }
 	}
 })();
 onresize100.add(filecolwidth, true);
@@ -6316,10 +6322,11 @@ var filecols = (function () {
 		var ths = QSA('#files>thead th>span');
 		for (var a = 0, aa = ths.length; a < aa; a++) {
 			var th = ths[a].parentElement,
+				toh = ths[a].outerHTML, // !ff10
 				ttv = L.cols[ths[a].textContent];
 
-			if (!MOBILE) {
-				th.innerHTML = '<div class="cfg"><a href="#">-</a></div>' + ths[a].outerHTML;
+			if (!MOBILE && toh) {
+				th.innerHTML = '<div class="cfg"><a href="#">-</a></div>' + toh;
 				th.getElementsByTagName('a')[0].onclick = ev_row_tgl;
 			}
 			if (ttv) {
@@ -7125,7 +7132,7 @@ function show_md(md, name, div, url, depth) {
 	wfp_debounce.hide();
 	if (!marked) {
 		if (depth)
-			return toast.warn(10, errmsg + 'failed to load marked.js')
+			return toast.warn(10, errmsg + (window.WebAssembly ? 'failed to load marked.js' : 'your browser is too old'));
 
 		wfp_debounce.n--;
 		return import_js(SR + '/.cpr/deps/marked.js', function () {
diff --git a/copyparty/web/md.html b/copyparty/web/md.html
index d9da972a..5e08d07a 100644
--- a/copyparty/web/md.html
+++ b/copyparty/web/md.html
@@ -31,7 +31,7 @@
 			<span id="lno">L#</span>
 		{%- else %}
 			<a href="{{ arg_base }}edit" tt="good: higher performance$Ngood: same document width as viewer$Nbad: assumes you know markdown">edit (basic)</a>
-			<a href="{{ arg_base }}edit2" tt="not in-house so probably less buggy">edit (fancy)</a>
+			<a href="{{ arg_base }}edit2" id="edit2" tt="not in-house so probably less buggy">edit (fancy)</a>
 			<a href="{{ arg_base }}">view raw</a>
 		{%- endif %}
 	</div>
diff --git a/copyparty/web/md.js b/copyparty/web/md.js
index 3d20105c..2679a13b 100644
--- a/copyparty/web/md.js
+++ b/copyparty/web/md.js
@@ -52,7 +52,7 @@ var img_load = (function () {
     var r = {};
     r.callbacks = [];
 
-    function fire() {
+    var fire = function () {
         for (var a = 0; a < r.callbacks.length; a++)
             r.callbacks[a]();
     }
@@ -472,7 +472,7 @@ img_load.callbacks = [toc.refresh];
 // scroll handler
 var redraw = (function () {
     var sbs = true;
-    function onresize() {
+    var onresize = function () {
         if (window.matchMedia)
             sbs = window.matchMedia('(min-width: 64em)').matches;
 
@@ -485,7 +485,7 @@ var redraw = (function () {
         onscroll();
     }
 
-    function onscroll() {
+    var onscroll = function () {
         toc.refresh();
     }
 
@@ -507,6 +507,12 @@ dom_navtgl.onclick = function () {
     redraw();
 };
 
+if (!HTTPS)
+    ebi('edit2').onclick = function (e) {
+        toast.err(0, "the fancy editor is only available over https");
+        return ev(e);
+    }
+
 if (sread('hidenav') == 1)
     dom_navtgl.onclick();
 
diff --git a/copyparty/web/md2.js b/copyparty/web/md2.js
index 77fbc300..0a965d33 100644
--- a/copyparty/web/md2.js
+++ b/copyparty/web/md2.js
@@ -92,7 +92,7 @@ var action_stack = null;
 var nlines = 0;
 var draw_md = (function () {
     var delay = 1;
-    function draw_md() {
+    var draw_md = function () {
         var t0 = Date.now();
         var src = dom_src.value;
         convert_markdown(src, dom_pre);
@@ -135,7 +135,7 @@ img_load.callbacks = [function () {
 
 // resize handler
 redraw = (function () {
-    function onresize() {
+    var onresize = function () {
         var y = (dom_hbar.offsetTop + dom_hbar.offsetHeight) + 'px';
         dom_wrap.style.top = y;
         dom_swrap.style.top = y;
@@ -143,12 +143,12 @@ redraw = (function () {
         map_src = genmap(dom_ref, map_src);
         map_pre = genmap(dom_pre, map_pre);
     }
-    function setsbs() {
+    var setsbs = function () {
         dom_wrap.className = '';
         dom_swrap.className = '';
         onresize();
     }
-    function modetoggle() {
+    var modetoggle = function () {
         var mode = dom_nsbs.innerHTML;
         dom_nsbs.innerHTML = mode == 'editor' ? 'preview' : 'editor';
         mode += ' single';
@@ -172,7 +172,7 @@ redraw = (function () {
 (function () {
     var skip_src = false, skip_pre = false;
 
-    function scroll(src, srcmap, dst, dstmap) {
+    var scroll = function (src, srcmap, dst, dstmap) {
         var y = src.scrollTop;
         if (y < 8) {
             dst.scrollTop = 0;
@@ -900,12 +900,12 @@ var set_lno = (function () {
         pv = null,
         lno = ebi('lno');
 
-    function poke() {
+    var poke = function () {
         clearTimeout(t);
         t = setTimeout(fire, 20);
     }
 
-    function fire() {
+    var fire = function () {
         try {
             clearTimeout(t);
 
@@ -930,7 +930,7 @@ var set_lno = (function () {
 
 // hotkeys / toolbar
 (function () {
-    function keydown(ev) {
+    var keydown = function (ev) {
         ev = ev || window.event;
         var kc = ev.code || ev.keyCode || ev.which,
             editing = document.activeElement == dom_src;
@@ -1058,7 +1058,7 @@ action_stack = (function () {
     var ignore = false;
     var ref = dom_src.value;
 
-    function diff(from, to, cpos) {
+    var diff = function (from, to, cpos) {
         if (from === to)
             return null;
 
@@ -1089,14 +1089,14 @@ action_stack = (function () {
         };
     }
 
-    function undiff(from, change) {
+    var undiff = function (from, change) {
         return {
             txt: from.substring(0, change.car) + change.txt + from.substring(change.cdr),
             cpos: change.cpos
         };
     }
 
-    function apply(src, dst) {
+    var apply = function (src, dst) {
         dbg('undos(%d) redos(%d)', hist.un.length, hist.re.length);
 
         if (src.length === 0)
@@ -1120,7 +1120,7 @@ action_stack = (function () {
         return true;
     }
 
-    function schedule_push() {
+    var schedule_push = function () {
         if (ignore) {
             ignore = false;
             return;
@@ -1131,7 +1131,7 @@ action_stack = (function () {
         sched_timer = setTimeout(push, 500);
     }
 
-    function undo() {
+    var undo = function () {
         if (hist.re.length == 0) {
             clearTimeout(sched_timer);
             push();
@@ -1139,11 +1139,11 @@ action_stack = (function () {
         return apply(hist.un, hist.re);
     }
 
-    function redo() {
+    var redo = function () {
         return apply(hist.re, hist.un);
     }
 
-    function push() {
+    var push = function () {
         var newtxt = dom_src.value;
         var change = diff(ref, newtxt, sched_cpos);
         if (change !== null)
diff --git a/copyparty/web/up2k.js b/copyparty/web/up2k.js
index 0b84b8dc..15ae1585 100644
--- a/copyparty/web/up2k.js
+++ b/copyparty/web/up2k.js
@@ -588,7 +588,7 @@ function U2pvis(act, btns, uc, st) {
         btns[a].onclick = function (e) {
             ev(e);
             var newtab = this.getAttribute('act');
-            function go() {
+            var go = function () {
                 for (var b = 0; b < btns.length; b++) {
                     btns[b].className = (
                         btns[b].getAttribute('act') == newtab) ? 'act' : '';
@@ -1654,11 +1654,11 @@ function up2k_init(subtle) {
         var running = false,
             was_busy = false;
 
-        function defer() {
+        var defer = function () {
             running = false;
         }
 
-        function taskerd() {
+        var taskerd = function () {
             if (running)
                 return;
 
@@ -1956,7 +1956,7 @@ function up2k_init(subtle) {
             st.bytes.hashed += cdr - car;
             st.etac.h++;
 
-            function orz(e) {
+            var orz = function (e) {
                 bpend--;
                 segm_next();
                 hash_calc(nch, e.target.result);
@@ -2239,7 +2239,7 @@ function up2k_init(subtle) {
             st.todo.handshake.unshift(t);
             t.keepalive = keepalive;
         };
-        function orz(e) {
+        var orz = function (e) {
             if (t.t_busied != me) {
                 console.log('zombie handshake onload,', t.name, t);
                 return;
@@ -2523,7 +2523,7 @@ function up2k_init(subtle) {
         if (cdr >= t.size)
             cdr = t.size;
 
-        function orz(xhr) {
+        var orz = function (xhr) {
             var txt = ((xhr.response && xhr.response.err) || xhr.responseText) + '';
             if (txt.indexOf('upload blocked by x') + 1) {
                 apop(st.busy.upload, upt);
@@ -2552,7 +2552,7 @@ function up2k_init(subtle) {
             }
             orz2(xhr);
         }
-        function orz2(xhr) {
+        var orz2 = function (xhr) {
             apop(st.busy.upload, upt);
             apop(t.postlist, npart);
             if (!t.postlist.length) {
diff --git a/copyparty/web/util.js b/copyparty/web/util.js
index bad1fd4c..e3dc3de2 100644
--- a/copyparty/web/util.js
+++ b/copyparty/web/util.js
@@ -140,29 +140,35 @@ catch (ex) {
 }
 var crashed = false, ignexd = {}, evalex_fatal = false;
 function vis_exh(msg, url, lineNo, columnNo, error) {
-    if ((msg + '').indexOf('ResizeObserver') + 1)
+    msg = String(msg);
+    url = String(url);
+
+    if (msg.indexOf('ResizeObserver') + 1)
         return;  // chrome issue 809574 (benign, from <video>)
 
-    if ((msg + '').indexOf('l2d.js') + 1)
+    if (msg.indexOf('l2d.js') + 1)
         return;  // `t` undefined in tapEvent -> hitTestSimpleCustom
 
-    if (!/\.js($|\?)/.exec('' + url))
+    if (!/\.js($|\?)/.exec(url))
         return;  // chrome debugger
 
-    if ((url + '').indexOf(' > eval') + 1 && !evalex_fatal)
+    if (url.indexOf(' > eval') + 1 && !evalex_fatal)
         return;  // md timer
 
     var ekey = url + '\n' + lineNo + '\n' + msg;
     if (ignexd[ekey] || crashed)
         return;
 
+    if (url.indexOf('deps/marked.js') + 1 && !window.WebAssembly)
+        return; // ff<52
+
     crashed = true;
     window.onerror = undefined;
     var html = [
         '<h1>you hit a bug!</h1>',
         '<p style="font-size:1.3em;margin:0;line-height:2em">try to <a href="#" onclick="localStorage.clear();location.reload();">reset copyparty settings</a> if you are stuck here, or <a href="#" onclick="ignex();">ignore this</a> / <a href="#" onclick="ignex(true);">ignore all</a> / <a href="?b=u">basic</a></p>',
         '<p style="color:#fff">please send me a screenshot arigathanks gozaimuch: <a href="<ghi>" target="_blank">new github issue</a></p>',
-        '<p class="b">' + esc(url + ' @' + lineNo + ':' + columnNo), '<br />' + esc(String(msg)).replace(/\n/g, '<br />') + '</p>',
+        '<p class="b">' + esc(url + ' @' + lineNo + ':' + columnNo), '<br />' + esc(msg).replace(/\n/g, '<br />') + '</p>',
         '<p><b>UA:</b> ' + esc(navigator.userAgent + '')
     ];
 
@@ -354,13 +360,13 @@ catch (ex) {
 }
 
 // https://stackoverflow.com/a/950146
-function import_js(url, cb) {
+function import_js(url, cb, ecb) {
     var head = document.head || document.getElementsByTagName('head')[0];
     var script = mknod('script');
     script.type = 'text/javascript';
     script.src = url;
     script.onload = cb;
-    script.onerror = function () {
+    script.onerror = ecb || function () {
         var m = 'Failed to load module:\n' + url;
         console.log(m);
         toast.err(0, m);
@@ -1141,7 +1147,7 @@ var timer = (function () {
         apop(r.q, fun);
     };
 
-    function doevents() {
+    var doevents = function () {
         if (crashed)
             return;
 
@@ -1352,7 +1358,7 @@ var toast = (function () {
     r.p_sec = 0;
     r.p_t = 0;
 
-    function scrollchk() {
+    var scrollchk = function () {
         if (scrolling)
             return;
 
@@ -1367,7 +1373,7 @@ var toast = (function () {
         scrolling = true;
     }
 
-    function unscroll() {
+    var unscroll = function () {
         timer.rm(scrollchk);
         clmod(obj, 'scroll');
         scrolling = false;
@@ -1486,7 +1492,7 @@ var modal = (function () {
         r.busy = false;
         setTimeout(next, 50);
     };
-    function ok(e) {
+    var ok = function (e) {
         ev(e);
         var v = ebi('modali');
         v = v ? v.value : true;
@@ -1494,14 +1500,14 @@ var modal = (function () {
         if (cb_ok)
             cb_ok(v);
     }
-    function ng(e) {
+    var ng = function (e) {
         ev(e);
         r.hide();
         if (cb_ng)
             cb_ng(null);
     }
 
-    function onfocus(e) {
+    var onfocus = function (e) {
         var ctr = ebi('modalc');
         if (!ctr || !ctr.contains || !document.activeElement || ctr.contains(document.activeElement))
             return;
@@ -1513,7 +1519,7 @@ var modal = (function () {
         ev(e);
     }
 
-    function onkey(e) {
+    var onkey = function (e) {
         var k = e.code,
             eok = ebi('modal-ok'),
             eng = ebi('modal-ng'),
@@ -1536,7 +1542,7 @@ var modal = (function () {
             return ng();
     }
 
-    function next() {
+    var next = function () {
         if (!r.busy && q.length)
             q.shift()();
     }
@@ -1547,7 +1553,7 @@ var modal = (function () {
         });
         next();
     };
-    function _alert(html, cb, fun) {
+    var _alert = function (html, cb, fun) {
         cb_ok = cb_ng = cb;
         cb_up = fun;
         html += '<div id="modalb"><a href="#" id="modal-ok">OK</a></div>';
@@ -1560,7 +1566,7 @@ var modal = (function () {
         });
         next();
     }
-    function _confirm(html, cok, cng, fun, btns) {
+    var _confirm = function (html, cok, cng, fun, btns) {
         cb_ok = cok;
         cb_ng = cng === undefined ? cok : cng;
         cb_up = fun;
@@ -1574,7 +1580,7 @@ var modal = (function () {
         });
         next();
     }
-    function _prompt(html, v, cok, cng, fun) {
+    var _prompt = function (html, v, cok, cng, fun) {
         cb_ok = cok;
         cb_ng = cng === undefined ? cok : null;
         cb_up = fun;
@@ -1793,7 +1799,7 @@ var favico = (function () {
     r.en = true;
     r.tag = null;
 
-    function gx(txt) {
+    var gx = function (txt) {
         return (svg_decl +
             '<svg version="1.1" viewBox="0 0 64 64" xmlns="http://www.w3.org/2000/svg">\n' +
             (r.bg ? '<rect width="100%" height="100%" rx="16" fill="#' + r.bg + '" />\n' : '') +
diff --git a/scripts/deps-docker/brotli.makefile b/scripts/deps-docker/brotli.makefile
index a3f70b55..3860224f 100644
--- a/scripts/deps-docker/brotli.makefile
+++ b/scripts/deps-docker/brotli.makefile
@@ -1,4 +1,4 @@
-all: $(addsuffix .br, $(wildcard prism* easymde*))
+all: $(addsuffix .br, $(wildcard easymde*))
 
 %.br: %
 	brotli -jZ $<
diff --git a/scripts/make-sfx.sh b/scripts/make-sfx.sh
index cad144b1..9b6f01ff 100755
--- a/scripts/make-sfx.sh
+++ b/scripts/make-sfx.sh
@@ -481,7 +481,7 @@ iawk '/^[^ ]/{s=0}/^def babel_extract/{s=1}!s' j2/jinja2/ext.py
 ised '/InternationalizationExtension/d' j2/jinja2/ext.py
 iawk '/^class/{s=0}/^class (Package|Dict|Function|Prefix|Choice|Module)Loader/{s=1}!s' j2/jinja2/loaders.py
 sed -ri '/^from .bccache | (Package|Dict|Function|Prefix|Choice|Module)Loader$/d' j2/jinja2/__init__.py
-rm -f j2/jinja2/async* j2/jinja2/bccache.py
+rm -f j2/jinja2/async* j2/jinja2/{bccache,sandbox}.py
 cat > j2/jinja2/_identifier.py <<'EOF'
 import re
 pattern = re.compile(r"\w+")