diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5a6c72e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+build
+release-svn
diff --git a/packagezip.sh b/packagezip.sh
new file mode 100755
index 0000000..14ed3cd
--- /dev/null
+++ b/packagezip.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+ZIPNAME="unwrap-shortlinks"
+
+echo "Removing old build folder and zip if present"
+if test -d "build/$ZIPNAME"; then
+	rm -rf "build/$ZIPNAME"
+fi
+if test -f "build/$ZIPNAME.zip"; then
+	rm "build/$ZIPNAME.zip"
+fi
+
+echo "Copying files to build folder"
+if [ ! -d build ]; then
+	mkdir build
+fi
+
+mkdir build/$ZIPNAME
+cp -p *.php *.txt *.md LICENSE "build/$ZIPNAME"
+rm "build/$ZIPNAME/readme.md"
+
+echo "Building $ZIPNAME"
+cd build && zip -r "$ZIPNAME.zip" "$ZIPNAME"
+
diff --git a/readme.md b/readme.md
index ba6d831..bff32af 100644
--- a/readme.md
+++ b/readme.md
@@ -1,12 +1,16 @@
 # Unwrap Shortlinks
 
-Stable tag: 0.2.2  
-Tags: urls, links  
+Stable tag: 0.2.3  
+Tags: urls, links, classicpress  
 Requires at least: 3.0  
 Tested up to: 6.0  
+Requires PHP: 7.0  
 Contributors: Kelson  
 License: GPLv2 or later  
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
+For ClassicPress  
+Requires: 1.0  
+Tested: 1.4.1
 
 Follow shortened links (t.co, bit.ly, etc) and expand them so that your blog post will point directly to the destination.
 
@@ -36,23 +40,32 @@ Install the plugin and activate it. The next time you paste a supported short UR
 
 ### What if the destination redirects to another link?
 
-It won't keep following the trail. Just in case there's a loop, or the destination page has been replaced with a redirection to a home page, etc.
-
-But if the destination is another known shortener (say you had a t.co link that redirected to a bit.ly link), the next time you save the post, it will follow that one to its destination.
+At the moment it'll stop at the first one to avoid infinite redirect loops. But if the destination is another known shortener (say you had a t.co link that redirected to a bit.ly link), the next time you save the post, it will follow that one to its destination. TODO: I plan to make it follow a limited chain of known shorteners.
 
 ### How do I add a shortener to the list?
 
 It's not supported yet, but I plan on adding an options page for it.
 
+### I'm running on a local server and this doesn't do anything!
+
+Most likely your system is configured to block your local webserver
+from making outgoing connections. This is a sensible default for security!
+Depending on your system, it may be blocked by a local or network firewall.
+If you're running Fedora Workstation with SELinux (like I am), this will enable it:
+```
+sudo setsebool -P httpd_can_network_connect true
+```
+
+Thanks to [igienger's post](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12637512) on the WordPress support forums!
+
 ### What about compatibility?
 
 It should work going back to the classic editor and forward to the block editor. It even works on [ClassicPress](https://www.classicpress.net/).
 
-
 ## Changelog
 
-### 2022-05-24
-* Confirmed compatible with WordPress 6.0
+### [0.2.3] - 2022-06-10
+* Fix bugs with tinyurl.com and URLs inside HTML links. (Plaintext URLs were working fine.)
 
 ### [0.2.2] - 2022-01-29
 
diff --git a/readme.txt b/readme.txt
new file mode 100644
index 0000000..3b58b13
--- /dev/null
+++ b/readme.txt
@@ -0,0 +1,77 @@
+=== Unwrap Shortlinks ===
+
+Stable tag: 0.2.3  
+Tags: urls, links, classicpress  
+Requires at least: 3.0  
+Tested up to: 6.0  
+Requires PHP: 7.0  
+Contributors: Kelson  
+License: GPLv2 or later  
+License URI: http://www.gnu.org/licenses/gpl-2.0.html
+For ClassicPress  
+Requires: 1.0  
+Tested: 1.4.1
+
+Follow shortened links (t.co, bit.ly, etc) and expand them so that your blog post will point directly to the destination.
+
+== Description ==
+
+Automatically expands URLs at the following known link shorteners when you save a post:
+* t.co
+* bit.ly
+* ow.ly
+* j.mp
+* is.gd
+* trib.al
+* buff.ly
+* wp.me
+* tmblr.co
+* tinyurl.com
+* goo.gl
+* dlvr.it
+* fb.me
+* qr.ae
+
+== Installation ==
+
+Install the plugin and activate it. The next time you paste a supported short URL into a post, it will be updated when the post is saved.
+
+== Frequently Asked Questions ==
+
+= What if the destination redirects to another link? =
+
+At the moment it'll stop at the first one to avoid infinite redirect loops. But if the destination is another known shortener (say you had a t.co link that redirected to a bit.ly link), the next time you save the post, it will follow that one to its destination. TODO: I plan to make it follow a limited chain of known shorteners.
+
+= How do I add a shortener to the list? =
+
+It's not supported yet, but I plan on adding an options page for it.
+
+= I'm running on a local server and this doesn't do anything! =
+
+Most likely your system is configured to block your local webserver
+from making outgoing connections. This is a sensible default for security!
+Depending on your system, it may be blocked by a local or network firewall.
+If you're running Fedora Workstation with SELinux (like I am), this will enable it:
+```
+sudo setsebool -P httpd_can_network_connect true
+```
+
+Thanks to [igienger's post](https://wordpress.org/support/topic/error-curl-error-7-3/#post-12637512) on the WordPress support forums!
+
+= What about compatibility? =
+
+It should work going back to the classic editor and forward to the block editor. It even works on [ClassicPress](https://www.classicpress.net/).
+
+== Changelog ==
+
+= [0.2.3] - 2022-06-10 =
+* Fix bugs with tinyurl.com and URLs inside HTML links. (Plaintext URLs were working fine.)
+
+= [0.2.2] - 2022-01-29 =
+
+* Initial release based on the code I've been running locally for years, plus changes requested by the WordPress plugin review team.
+
+[Source on Codeberg](https://codeberg.org/kvibber/unwrap-shortlinks).  
+[Plugin page at WordPress](https://wordpress.org/plugins/unwrap-shortlinks/).
+
+(c) 2016-2022 [Kelson Vibber](https://kvibber.com/)
diff --git a/unwrap-shortlinks.php b/unwrap-shortlinks.php
index 3ed5bdd..917594c 100644
--- a/unwrap-shortlinks.php
+++ b/unwrap-shortlinks.php
@@ -3,7 +3,7 @@
  Plugin Name: Unwrap Shortlinks
  Plugin URI: https://codeberg.org/kvibber/unwrap-shortlinks
  Description: Follow shortened links (t.co, bit.ly, etc) and expand them so that your blog post will point directly to the destination.
- Version: 0.2.2
+ Version: 0.2.3
  Author: Kelson Vibber
  Author URI: https://kvibber.com
  License: GPLv2 or later  
@@ -13,7 +13,7 @@
 // ini_set('display_errors', '1'); ini_set('error_reporting', E_ALL);
 
 function ktv_unwrap_shortlinks($content) {
-	preg_match_all('/\b(https?:\/\/(?:t\.co|bit\.ly|j\.mp|ow\.ly|is\.gd|trib\.al|buff\.ly|tmblr\.co|wp\.me|tinyurl\.com|goo\.gl|dlvr\.it|fb\.me|qr\.ae)\/[^\s"\']+)/', $content, $matches, PREG_PATTERN_ORDER);
+	preg_match_all('/\b(https?:\/\/(?:t\.co|bit\.ly|j\.mp|ow\.ly|is\.gd|trib\.al|buff\.ly|tmblr\.co|wp\.me|tinyurl\.com|goo\.gl|dlvr\.it|fb\.me|qr\.ae)\/[^\s"\']+)\b/', $content, $matches, PREG_PATTERN_ORDER);
 	foreach ($matches[1] as $link) {
 		$getlink = ktv_unwrap_shortlinks_replace($link);
 		if ($getlink != "")
@@ -31,7 +31,7 @@ function ktv_unwrap_shortlinks_replace($url) {
 	$finalURL = wp_remote_retrieve_header( $response, 'location' );
 	
 	// If it was a redirect, return the next URL.
-	if ($status == 301 || $status == 302 || $status == 307) {
+	if ($status == 301 || $status == 302 || $status == 307 || $status == 308) {
 		return esc_url($finalURL);
 	}
 	// We didn't get anything, or it didn't redirect, so let's return a blank.
diff --git a/update.sh b/update.sh
new file mode 100644
index 0000000..ed0965c
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,69 @@
+#!/bin/bash
+# https://developer.wordpress.org/plugins/wordpress-org/how-to-use-subversion/
+
+VERSION=$1
+ACTION=""
+MESSAGE=$2
+
+echo "Updating files in trunk."
+cp -p *.php *.md release-svn/trunk
+
+
+
+if [[ $VERSION == "trunk" ]]; then
+  if [[ "x$MESSAGE" == "x"  ]]; then
+    echo "Message?"
+    read MESSAGE
+  fi
+  if [[ "x$MESSAGE" == "x"  ]]; then
+    echo "Sorry, a message is required"
+    exit -1
+  fi
+
+  echo "Checking in the updated trunk"
+  cd release-svn/trunk
+  svn ci -m "$MESSAGE"
+  exit 0
+fi
+
+
+
+if [[ "x$VERSION" == "x" ]]; then
+	echo "No release version specified, stopping here."
+	exit 0
+fi
+
+
+
+
+if [ ! -f ".git/refs/tags/v$VERSION" ]; then
+  echo "Error: v$VERSION not found in git tags."
+  exit -1
+fi
+
+cd release-svn
+
+if [ -d "tags/$VERSION" ]; then
+  echo "Warning: Release $VERSION already exists in local svn."
+  echo "(r)eplace, (u)pload as-is, or (c)ancel?"
+  read ACTION
+  if [[ $ACTION == "r" ]]; then 
+    echo "removing old tag $VERSION"
+    svn rm --force "tags/$VERSION"
+  elif [[ ! $ACTION == "u" ]]; then
+    echo "Cancelling"
+    exit -1
+  fi
+fi
+
+if [[ $ACTION == "u" ]]; then
+  echo "Leaving release tag unchanged."
+else
+  echo "Tagging release $VERSION in svn."
+  svn cp trunk "tags/$VERSION"
+fi
+
+echo "Checking in updated version $VERSION"
+svn ci -m "tagging version $VERSION"
+
+