ignore markdown on string spaces

src/system/helper/format.php

@@ -48,11 +48,11 @@ class Format {
 
   public static function post(string $text) {
 
-    $text = preg_replace("|\*(.*?)\*|i", "<b>$1</b>", $text);
+    $text = preg_replace("|\*([\S]+)\*|i", "<b>$1</b>", $text);
-    $text = preg_replace("|\~(.*?)\~|i", "<i>$1</i>", $text);
+    $text = preg_replace("|\~([\S]+)\~|i", "<i>$1</i>", $text);
-    $text = preg_replace("|\_(.*?)\_|i", "<u>$1</u>", $text);
+    $text = preg_replace("|\_([\S]+)\_|i", "<u>$1</u>", $text);
-    $text = preg_replace("|\-(.*?)\-|i", "<s>$1</s>", $text);
+    $text = preg_replace("|\-([\S]+)\-|i", "<s>$1</s>", $text);
-    $text = preg_replace("|\`(.*?)\`|i", "<samp>$1</samp>", $text);
+    $text = preg_replace("|\`([\S]+)\`|i", "<samp>$1</samp>", $text);
 
     $text = preg_replace("|@([a-zA-Z0-9_]+)|i", "<a href=\"people/$1\">@$1</a>", $text);
     $text = preg_replace("|((https?://)+([\d\w\.-]+\.[\w\.]{2,6})[^\s\]\[\<\>]*/?)|i", "<a href=\"$1\" target=\"_blank\">$3</a>", $text);