History completion by both URL and title.

Resolves #1649.

qutebrowser/completion/models/histcategory.py

@@ -47,7 +47,7 @@ class HistoryCategory(QSqlQueryModel):
             "FROM CompletionHistory",
             # the incoming pattern will have literal % and _ escaped with '\'
             # we need to tell sql to treat '\' as an escape character
-            "WHERE (url LIKE :pat escape '\\' or title LIKE :pat escape '\\')",
+            "WHERE ((url || title) LIKE :pat escape '\\')",
             self._atime_expr(),
             "ORDER BY last_atime DESC",
         ]), forward_only=False)

tests/unit/completion/test_histcategory.py

@@ -78,6 +78,10 @@ def hist(init_sql, config_stub):
     ("can't",
      [("can't touch this", ''), ('a', '')],
      [("can't touch this", '')]),
+
+    ("ample itle",
+     [('example.com', 'title'), ('example.com', 'nope')],
+     [('example.com', 'title')]),
 ])
 def test_set_pattern(pattern, before, after, model_validator, hist):
     """Validate the filtering and sorting results of set_pattern."""