From af2e508004bcf4401a40e1ce5d465292b054f011 Mon Sep 17 00:00:00 2001
From: Johan Hidding <j.hidding@esciencecenter.nl>
Date: Mon, 16 Sep 2024 16:34:57 +0200
Subject: [PATCH] add special `classes` attribute in the `quarto_attributes`
 hook

---
 README.md                            | 2 ++
 entangled/hooks/quarto_attributes.py | 6 +++++-
 pyproject.toml                       | 2 +-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 406f578..c65686d 100644
--- a/README.md
+++ b/README.md
@@ -271,6 +271,8 @@ if __name__ == "__main__":
 ```
 ~~~
 
+The `id` attribute is reserved for the code's identifier (normally indicated with `#`) and the `classes` attribute can be used to indicate a list of classes in addition to the language class already given.
+
 ## Brei
 Entangled has a small build engine (similar to GNU Make) embedded, called Brei. You may give it a list of tasks (specified in TOML) that may depend on one another. Brei will run these when dependencies are newer than the target. Execution is lazy and in parallel. Brei supports:
 
diff --git a/entangled/hooks/quarto_attributes.py b/entangled/hooks/quarto_attributes.py
index c7e28e4..fc7d056 100644
--- a/entangled/hooks/quarto_attributes.py
+++ b/entangled/hooks/quarto_attributes.py
@@ -3,7 +3,7 @@
 from itertools import takewhile
 import yaml
 
-from ..properties import Attribute, Id
+from ..properties import Attribute, Class, Id
 from ..document import ReferenceId, ReferenceMap, CodeBlock
 from .base import HookBase
 from ..logging import logger
@@ -37,6 +37,10 @@ def on_read(self, code: CodeBlock):
 
         if "id" in attrs:
             code.properties.append(Id(attrs["id"]))
+
+        if "classes" in attrs:
+            code.properties.extend(Class(c) for c in attrs["classes"])
+        
         code.properties.extend(Attribute(k, v) for k, v in attrs.items())
 
         log.debug("quarto attributes: %s", attrs)
diff --git a/pyproject.toml b/pyproject.toml
index 7c0ee99..e1c997c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "entangled-cli"
-version = "2.1.4"
+version = "2.1.5"
 description = "Literate Programming toolbox"
 repository = "https://github.com/entangled/entangled.py"
 homepage = "https://entangled.github.io/"