diff --git a/parser/doxygroup.py b/parser/doxygroup.py
index 831db08..b730213 100644
--- a/parser/doxygroup.py
+++ b/parser/doxygroup.py
@@ -24,18 +24,22 @@
 # After the doxygen close `*/`, the function definition can be separated from the
 # comment by preprocessor directives (`#if MEOS` … `#endif`) and/or ordinary C
 # comments — the vendored pgtypes files guard the MEOS-build twin of a symbol
-# that way. Skip any run of such lines, then an optional return-type line (no
-# parens/braces/;/=), then `name(`. DOTALL lets a multi-line `/* … */` comment
-# be skipped as one unit.
+# that way. Skip any run of such lines, then capture the signature head up to the
+# first `(`; the function name is the LAST identifier in that head. This handles
+# the return type on its OWN line (`Pcpatch *\npcpatch_copy(`) AND inline on the
+# name's line (`bool pcpatch_eq(`) — the latter otherwise slips through and the
+# `@ingroup` mis-binds to the next own-line definition. DOTALL lets a multi-line
+# `/* … */` comment be skipped as one unit.
 # A skippable line is blank or holds only a preprocessor directive / comment
 # (the directive/comment part is optional so a blank line matches too). `[^\S\n]`
 # is horizontal whitespace only — it matches `\r` so CRLF sources work, without
 # letting a unit swallow the following return-type or name line.
 _SKIP = r"(?:[^\S\n]*(?:\#[^\n]*|//[^\n]*|/\*.*?\*/)?[^\S\n]*\n)*"
-_FNDEF = re.compile(
-    r"\*/[^\S\n]*\n" + _SKIP + r"(?:[^\n(){};=]+\n)?(\w+)\s*\(",
+_FNHEAD = re.compile(
+    r"\*/[^\S\n]*\n" + _SKIP + r"([^(){};=]*?)\(",
     re.DOTALL,
 )
+_WORD = re.compile(r"[A-Za-z_]\w*")
 
 
 def _name_to_group(*srcs):
@@ -51,9 +55,11 @@ def _name_to_group(*srcs):
             text = cf.read_text(errors="ignore")
             for m in _INGROUP.finditer(text):
                 grp = m.group(1)
-                fm = _FNDEF.search(text, m.end())
+                fm = _FNHEAD.search(text, m.end())
                 if fm:
-                    out.setdefault(fm.group(1), grp)
+                    words = _WORD.findall(fm.group(1))
+                    if words:
+                        out.setdefault(words[-1], grp)
     return out
 
 
diff --git a/tests/test_doxygroup.py b/tests/test_doxygroup.py
index bc5a318..5e9e56b 100644
--- a/tests/test_doxygroup.py
+++ b/tests/test_doxygroup.py
@@ -90,6 +90,31 @@ def _write(root, rel, text):
     "}\r\n"
 )
 
+# Inline return type: the type and the name share one line (terse comparison
+# one-liners such as `bool pcpatch_eq(...)`). The name is the last identifier
+# before `(`; without this the @ingroup mis-binds to the next own-line
+# definition. This fixture also pins that correction: the `_comp` group labels
+# the inline `pcpatch_eq`, and the following own-line `pcpatch_copy` keeps its
+# own `_constructor` group rather than being swallowed by `_comp`.
+INLINE = """\
+/**
+ * @ingroup meos_pointcloud_comp
+ * @brief doc
+ */
+bool pcpatch_eq(const Pcpatch *pa1, const Pcpatch *pa2)
+{ return pcpatch_cmp(pa1, pa2) == 0; }
+
+/**
+ * @ingroup meos_pointcloud_constructor
+ * @brief doc
+ */
+Pcpatch *
+pcpatch_copy(const Pcpatch *pa)
+{
+  return NULL;
+}
+"""
+
 
 class TestFndefRobustness(unittest.TestCase):
     def setUp(self):
@@ -121,6 +146,14 @@ def test_crlf(self):
         self.assertEqual(
             self._map().get("jsonbset_value_n"), "meos_json_set_accessor")
 
+    def test_inline_return_type(self):
+        _write(self.root, "meos/src/pointcloud/pcpatch.c", INLINE)
+        m = self._map()
+        # The inline `bool pcpatch_eq(...)` is captured under its own group ...
+        self.assertEqual(m.get("pcpatch_eq"), "meos_pointcloud_comp")
+        # ... and does not steal the following own-line definition's group.
+        self.assertEqual(m.get("pcpatch_copy"), "meos_pointcloud_constructor")
+
 
 class TestMultiRootScan(unittest.TestCase):
     def test_scans_every_root(self):