remove hide0 functionality (please use details/summary tags and set/clear open attribute)

Author: ssb22

README.md

@@ -18,25 +18,12 @@ Therefore I generally write English text in ASCII, and use this Javascript code
 to assess the level of browser support before making substitutions.
 If Javascript is not available then my site should still be readable in ASCII.
 
-Other things this script does
------------------------------
-
-While the main point of this script is typography, it also provides:
-
-* an `onclick` function for every `abbr` tag (helps in touchscreen situations
-  with no mouse if you're using `<abbr title="...">`)
-
-* a function to 'collapse' parts of the page and replace it with
-  a "Show details" link (this is deprecated because we should be
-  using modern HTML's `<details>` and `<summary>` instead)
-
+While the main point of this script is typography, it also provides
+an `onclick` function for every `abbr` tag (helps in touchscreen situations
+with no mouse if you're using `<abbr title="...">`).
 Again if Javascript is not available then this is simply not done; the page
 should still be readable.
 
-Deprecated collapse function: call `hide0(id)` after loading
-`typography.js` (see below), where `id` is the `id=` attribute of your
-collapsible.
-
 Usage
 -----
 

typography.js

@@ -1,7 +1,7 @@
 // @license magnet:?xt=urn:btih:8e4f440f4c65981c5bf93c76d35135ba5064d8b7&dn=apache-2.0.txt Apache-2.0
 // (the above comment is for LibreJS)
 
-// Web page typography helper v1.57 (c) 2011-2014,2016,2019-2024 Silas S. Brown.
+// Web page typography helper v1.58 (c) 2011-2014,2016,2019-2024 Silas S. Brown.
 
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -109,25 +109,6 @@ if(document.getElementsByTagName && navigator.userAgent.indexOf("Googlebot/")==-
   }
 } fix_typography();
 
-function hide0(id) {} // no-op unless we can do:
-if(document.getElementsByClassName && navigator.userAgent.slice(-6)!='Gecko/') { // 'Gecko/' at the end is presented to JS by UC Browser's transcoder, which lets you set v.OIH but then forgets it by the time show0 is called, so don't do it
-    function _h(v) {
-        if(location.hash) {
-            if(location.hash=="#"+v.id) return; // don't collapse if using id from an off-page link
-            var p=v.previousSibling; if(p && p.nodeType==1 && p.nodeName.toLowerCase()=='a' && location.hash=="#"+p.getAttribute("name")) return; // or if using <a name=".."></a> immediately before (for backward compatibility with browsers that can't jump to an id) and we jumped to that
-        }
-        if(v.innerHTML) { v.OIH=v.innerHTML; if(v.OIH==v.innerHTML) {
-            // looks like we have the browser support we need to collapse
-            var txt=v.getAttribute("data-txt"),opt=v.getAttribute("data-opt"),c1="",c2="";
-            if(opt=="centre") { c1="<center>"; c2="<"+"/center>"; }
-            var inline = (opt=="inline" || opt=="inline-ftn");
-            if(!txt) txt="Show details";
-            v.innerHTML=c1+"<a href=\"#"+v.id+"\" onClick=\"javascript:var v=document.getElementById('"+v.id+"'); v.innerHTML=v.OIH; v.style=v.OS; "+(opt=="inline-ftn"?"window.scrollTo(0,document.body.scrollHeight);v.scrollIntoView();v.parentElement.style='font-size:1em';":"")+"if(v.getElementsByTagName){var abbrs=v.getElementsByTagName('abbr');for(var i=0;i<abbrs.length;i++)abbrs[i].onclick=Function('alert(this.title)')}return false;\">"+typefix(txt)+"<"+"/a>"+c2;
-            v.OS=v.style; if(!inline)v.style="display:block!important"
-        } }
-    } hide0=function(id){_h(document.getElementById(id));}
-}
-
 if(document.getElementsByTagName){var abbrs=document.getElementsByTagName('abbr');for(var i=0;i<abbrs.length;i++)abbrs[i].onclick=Function("alert(this.title)")}
 
 // @license-end