Implement CSS text-decoration blink

CHANGELOG.rst

@@ -18,6 +18,7 @@ Changed
 Added
 =====
 
+- Implement CSS blink
 - Implement progressive rendering in webview
 - Pre-render terminal graphics to speed up notebook scrolling
 - Add support for ``ruff`` code formatter

euporie/core/ft/html.py

@@ -1752,6 +1752,9 @@ def style(self) -> str:
         if "line-through" in theme["text_decoration"]:
             style = f"{style} strike"
 
+        if "blink" in theme["text_decoration"]:
+            style = f"{style} blink"
+
         if self.hidden:
             style = f"{style} hidden nounderline"
 
@@ -2094,6 +2097,10 @@ def __len__(self) -> int:
             "display": "inline",
             "font_weight": "bold",
         },
+        ((CssSelector(item="blink"),),): {
+            "display": "inline",
+            "text_decoration": "blink",
+        },
         (
             (CssSelector(item="cite"),),
             (CssSelector(item="dfn"),),

tests/test_core_ft_html.py

@@ -42,6 +42,15 @@ def test_hidden() -> None:
     assert style.find("nounderline") > style.find("underline")
 
 
+def test_blink() -> None:
+    """Text with ``text-decoration: blink`` is rendered as spaces."""
+    data = '<span style="text-decoration: blink">a</span>'
+    result = to_formatted_text(HTML(data, width=1))
+    style, text, *_ = result[0]
+    # Hidden attribute is applied
+    assert "blink" in style
+
+
 def test_hidden_underline_removal() -> None:
     """Underline attribute should be removed from hidden elements."""
     data = 'a <u style="visibility:hidden">b</u> c'