Include embedded style map when explicit style map is set

2 files changed, 25 insertions, 9 deletions

diff --git a/mammoth/__init__.py b/mammoth/__init__.py
index 7735fcf..fe480ec 100644
--- a/mammoth/__init__.py
+++ b/mammoth/__init__.py
@@ -5,6 +5,9 @@ from .docx.style_map import write_style_map, read_style_map
 __all__ = ["convert_to_html", "extract_raw_text", "images", "underline"]
 
 
+_undefined = object()
+
+
 def convert_to_html(*args, **kwargs):
     return convert(*args, output_format="html", **kwargs)
 
@@ -13,11 +16,13 @@ def convert_to_markdown(*args, **kwargs):
     return convert(*args, output_format="markdown", **kwargs)
 
 
-def convert(fileobj, transform_document=None, id_prefix=None, **kwargs):
+def convert(fileobj, transform_document=None, id_prefix=None, include_embedded_style_map=_undefined, **kwargs):
+    if include_embedded_style_map is _undefined:
+        include_embedded_style_map = True
     if transform_document is None:
         transform_document = lambda x: x
-    if kwargs.get("style_map") is None:
-        kwargs["style_map"] = read_style_map(fileobj)
+    if include_embedded_style_map:
+        kwargs["embedded_style_map"] = read_style_map(fileobj)
     return options.read_options(kwargs).bind(lambda convert_options:
         docx.read(fileobj).map(transform_document).bind(lambda document:
             conversion.convert_document_element_to_html(
diff --git a/mammoth/options.py b/mammoth/options.py
index ddac3de..d33b7ba 100644
--- a/mammoth/options.py
+++ b/mammoth/options.py
@@ -2,13 +2,24 @@ from . import style_reader, lists, results
 
 
 def read_options(options):
-    custom_style_map_result = _read_style_map(options.get("style_map") or "")
-    include_default_style_map = options.get("include_default_style_map", True)
-    options["ignore_empty_paragraphs"] = options.get("ignore_empty_paragraphs", True)
+    custom_style_map_text = options.pop("style_map", "") or ""
+    embedded_style_map_text = options.pop("embedded_style_map", "") or ""
+    include_default_style_map = options.pop("include_default_style_map", True)
+    
+    read_style_map_result = results.combine([
+        _read_style_map(custom_style_map_text),
+        _read_style_map(embedded_style_map_text),
+    ])
+    
+    custom_style_map, embedded_style_map = read_style_map_result.value
+    style_map = custom_style_map + embedded_style_map
     
-    options["style_map"] = custom_style_map_result.value + \
-        (_default_style_map if include_default_style_map else [])
-    return custom_style_map_result.map(lambda _: options)
+    if include_default_style_map:
+        style_map += _default_style_map
+    
+    options["ignore_empty_paragraphs"] = options.get("ignore_empty_paragraphs", True)
+    options["style_map"] = style_map
+    return read_style_map_result.map(lambda _: options)
 
 
 def _read_style_map(style_text):