Fixed regex mode of text filter just NOT WORKING

Apparently, `re.match` checks for the first line ONLY. We have to use
`.search` instead.

Also nuked away that plaintext conversion, we have it in status already
as a property

mastoposter/filters/text.py

@@ -2,7 +2,6 @@ from configparser import SectionProxy
 from re import Pattern, compile as regexp
 from typing import Optional, Set
 
-from bs4 import BeautifulSoup, PageElement, Tag
 from mastoposter.filters.base import BaseFilter
 from mastoposter.types import Status
 
@@ -27,30 +26,10 @@ class TextFilter(BaseFilter, filter_name="content"):
             return cls(tags=set(section["tags"].split()))
         raise AssertionError("neither regexp or tags were set")
 
-    @classmethod
-    def node_to_text(cls, el: PageElement) -> str:
-        if isinstance(el, Tag):
-            if el.name == "br":
-                return "\n"
-            elif el.name == "p":
-                return (
-                    str.join("", map(cls.node_to_text, el.children)) + "\n\n"
-                )
-            return str.join("", map(cls.node_to_text, el.children))
-        return str(el)
-
-    @classmethod
-    def html_to_plain(cls, html: str) -> str:
-        soup = BeautifulSoup(html, "lxml")
-        return cls.node_to_text(soup).rstrip()
-
     def __call__(self, status: Status) -> bool:
         source = status.reblog or status
         if self.regexp is not None:
-            return (
-                self.regexp.match(self.html_to_plain(source.content))
-                is not None
-            )
+            return self.regexp.search(source.content_plaintext) is not None
         elif self.tags:
             return len(self.tags & {t.name.lower() for t in source.tags}) > 0
         else: