update to roundcube version 1.6.6

README.md

@@ -30,16 +30,6 @@ INSTALLATION
 All styles are written using LESS syntax. Thus it needs to be compiled
 using the `lessc` (>= 2.5.2) command line tool. This comes with the `nodejs-less`
 RPM package or using `npm install less` which depend on nodejs.
-
-Here is how you can install those on Debian:
-```
-curl -sL https://deb.nodesource.com/setup_16.x | sudo bash -
-apt-get install -y nodejs
-npm install -g less
-npm install -g less-plugin-clean-css
-```
-Then, go to the `styles` folder, and when you're done editing your files, do the following, as needed:
-
 ```
     $ lessc --clean-css="--s1 --advanced" styles/styles.less > styles/styles.min.css
     $ lessc --clean-css="--s1 --advanced" styles/print.less > styles/print.min.css
@@ -58,8 +48,7 @@ or after installing it on the destination system.
 FOR DEVELOPERS
 --------------
 
-- Supported browsers: IE11+, Edge, Last 2 versions for Chrome/Firefox/Safari,
-  Android Browser 5+, iOS Safari 9+.
+- Supported browsers: Last 2 versions of Edge/Chrome/Firefox/Safari.
 
 - Skin color palette changes and other css modifications can be done
   via _styles.less and _variables.less files. Where you can overwrite all

ui.js

@@ -3413,7 +3413,7 @@ function rcube_elastic_ui()
                     recipients.push({
                         name: '',
                         email: email.replace(/(^<|>$)/g, '') // trim < and > characters
-                            .replace(/[^a-z]$/gi, '') // remove trailing comma or any non-letter character at the end (#7899)
+                            .replace(/[^\p{L}]$/giu, '') // remove trailing comma or any non-letter character at the end (#7899, #9257)
                     });
 
                     str = str.replace(email, '').trim();