From 1b73e1f4ee0bb6a3d9d8f8be59a562712412ace8 Mon Sep 17 00:00:00 2001
From: Adam Hopkins <adam@amhopkins.com>
Date: Sun, 5 Feb 2023 14:49:09 +0200
Subject: [PATCH 1/2] Python 3.7 compat

---
 html5tagger/builder.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/html5tagger/builder.py b/html5tagger/builder.py
index 7180b06..93ab010 100644
--- a/html5tagger/builder.py
+++ b/html5tagger/builder.py
@@ -1,5 +1,5 @@
 from .html5 import omit_endtag
-from .util import mangle, escape, escape_special, esc_script, esc_style, attributes
+from .util import attributes, esc_script, esc_style, escape, escape_special, mangle
 
 
 class Builder:
@@ -23,7 +23,11 @@ def _clear(self):
 
     @property
     def _allpieces(self):
-        return *self._pieces, self._endtag, *self._stack[::-1]
+        retval = []
+        retval.extend(self._pieces)
+        retval.append(self._endtag)
+        retval.extend(self._stack[::-1])
+        return tuple(retval)
 
     def _endtag_close(self):
         if self._endtag:

From b9581c3a4a6a965a0a91b3b71800096b8855fe60 Mon Sep 17 00:00:00 2001
From: Adam Hopkins <adam@amhopkins.com>
Date: Sun, 27 Aug 2023 09:01:25 +0300
Subject: [PATCH 2/2] Add CSS style attribute assignment

---
 html5tagger/builder.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/html5tagger/builder.py b/html5tagger/builder.py
index 93ab010..0167059 100644
--- a/html5tagger/builder.py
+++ b/html5tagger/builder.py
@@ -1,7 +1,13 @@
+import re
+
 from .html5 import omit_endtag
 from .util import attributes, esc_script, esc_style, escape, escape_special, mangle
 
 
+CSS_SELECTOR = re.compile(
+    r'(?:#(?P<id>[\w-]+))|(?:\.(?P<class>[\w-]+))|(?:\[(?P<attribute>[\w-]+)=["\']?(?P<value>[\w\s/]+)["\']?\])'
+)
+
 class Builder:
     """Builder generates a document with .elemname(attr1="value", ...) syntax.
 
@@ -114,6 +120,23 @@ def __call__(self, *_inner_content, **_attrs):
             self._(*_inner_content)
             self._endtag_close()
         return self
+    
+    def __getitem__(self, item):
+        """Add attributes to the current tag."""
+        assert isinstance(item, str), "Attribute names must be strings in CSS selector syntax."
+
+        classes = []
+        kwargs = {}
+        for match in CSS_SELECTOR.finditer(item):
+            if match["id"]:
+                kwargs["id_"] = match["id"]
+            elif match["class"]:
+                classes.append(match["class"])
+            elif match["attribute"]:
+                kwargs[match["attribute"]] = match["value"]
+        if classes:
+            kwargs["class_"] = " ".join(classes)
+        return self(**kwargs)
 
     def _(self, *_content):
         """Append new content without closing the current tag."""