Fix incorrect handling for the summary key in documentation metadata

ford/sourceform.py

@@ -432,7 +432,7 @@ def markdown(self, md: MetaMarkdown):
             )
 
         if self.meta.summary is not None:
-            self.meta.summary = md.convert("\n".join(self.meta.summary), context=self)
+            self.meta.summary = md.convert(" ".join(self.meta.summary.split()), context=self)
         elif paragraph := PARA_CAPTURE_RE.search(self.doc):
             # If there is no stand-alone webpage for this item, e.g.
             # an internal routine, make the whole doc blob appear,

test/test_sourceform.py

@@ -2268,3 +2268,24 @@ def test_no_space_after_character_type(parse_fortran_file):
     source = parse_fortran_file(data)
     function = source.functions[0]
     assert function.name.lower() == "firstword"
+
+
+def test_summary_handling_bug703(parse_fortran_file):
+    """Check that `summary` works, PR #703"""
+    data = """\
+    !> summary: Lorem ipsum dolor sit amet, consectetur adipiscing elit.
+    !>          Fusce ultrices tortor et felis tempus vehicula.
+    !>          Nulla gravida, magna ut pharetra.
+    !>
+    !> Full description
+    module test
+    end module myModule
+    """
+
+    fortran_file = parse_fortran_file(data)
+    md = MetaMarkdown()
+
+    module = fortran_file.modules[0]
+    module.markdown(md)
+
+    assert "Lorem ipsum" in module.meta.summary