fix(image tag): added image tag to template break tag list. srcset formatting

closes #444

src/djlint/formatter/attributes.py

@@ -145,18 +145,24 @@ def format_attributes(config: Config, html: str, match: re.match) -> str:
             # for the equals sign
             quote_length += 1
 
+        if config.format_attribute_template_tags:
+            join_space = "\n" + spacing
+        else:
+            join_space = (
+                "\n" + spacing + int(quote_length + len(attrib_name or "")) * " "
+            )
+
         # format style attribute
         if attrib_name and attrib_name.lower() == "style":
-            if config.format_attribute_template_tags:
-                join_space = "\n" + spacing
-            else:
-                join_space = (
-                    "\n" + spacing + int(quote_length + len(attrib_name or "")) * " "
-                )
             attrib_value = (";" + join_space).join(
                 [value.strip() for value in attrib_value.split(";") if value.strip()]
             )
 
+        elif attrib_name and attrib_name.lower() in ["srcset", "data-srcset", "sizes"]:
+            attrib_value = ("," + join_space).join(
+                [value.strip() for value in attrib_value.split(",") if value.strip()]
+            )
+
         # format template stuff
         if config.format_attribute_template_tags:
             if attrib_value and attrib_name not in config.ignored_attributes:

src/djlint/settings.py

@@ -614,6 +614,7 @@ class Config:
             | endraw
             | call
             | endcall
+            | image
             """
             + self.custom_blocks
             + r"""

tests/test_html/test_attributes.py

@@ -29,6 +29,30 @@ from click.testing import CliRunner
 from tests.conftest import reformat
 
 
+def test_srcset(runner: CliRunner, tmp_file: TextIO) -> None:
+    output = reformat(
+        tmp_file,
+        runner,
+        b"""<img {% image value.image fill-640x360   as block_image_640 %}
+     {% image value.image fill-768x432   as block_image_768 %}
+     {% image value.image fill-1024x576  as block_image_1024 %}
+     {% image value.image fill-1600x900  as block_image_1600 %}
+     data-src="{{ block_image_640.url }}"
+     data-srcset="{{ block_image_640.url }} 640w,
+                  {{ block_image_768.url }} 768w,
+                  {{ block_image_1024.url }} 1024w,
+                  {{ block_image_1600.url }} 1600w"
+     sizes="(min-width: 1200px) 458px,
+            (min-width: 992px) 374px,
+            (min-width: 768px) 720px,
+            calc(100vw - 30px)"
+     class="richtext-image imageblock overflow {{ value.image_position }} lazy"
+     title="{{ value.image.title }}"
+     alt="Block image"/>""",
+    )
+    assert output.exit_code == 0
+
+
 def test_long_attributes(runner: CliRunner, tmp_file: TextIO) -> None:
     output = reformat(
         tmp_file,