Handle unknown statement while parsing profile. Fixes #6931

conans/client/profile_loader.py

@@ -38,7 +38,10 @@ def __init__(self, text):
                 include = include[:-1]
                 self.includes.append(include)
             else:
-                name, value = line.split("=", 1)
+                try:
+                    name, value = line.split("=", 1)
+                except ValueError as error:
+                    raise ConanException("Error while parsing line %i: '%s'" % (counter, line))
                 name = name.strip()
                 if " " in name:
                     raise ConanException("The names of the variables cannot contain spaces")

conans/test/functional/command/install/install_test.py

@@ -488,7 +488,7 @@ def requirements(self):
         client.run("install . -pr=myotherprofile")
         self.assertIn("PKGOS=FreeBSD", client.out)
         client.run("install . -pr=./myotherprofile", assert_error=True)
-        self.assertIn("Error parsing the profile", client.out)
+        self.assertIn("Error while parsing line 0", client.out)
 
     def install_with_path_errors_test(self):
         client = TestClient()

conans/test/unittests/client/profile_loader/profile_loader_test.py

@@ -66,6 +66,17 @@ def test_parser(self):
 os=thing""")
 
 
+        txt = """
+includes(a/path/to\profile.txt)
+"""
+        with self.assertRaises(ConanException):
+            try:
+                ProfileParser(txt)
+            except Exception as error:
+                self.assertIn("Error while parsing line 1", error.args[0])
+                raise
+
+
 class ProfileTest(unittest.TestCase):
 
     def profile_loads_test(self):