allow swapping dict at runtime

qutebrowser/browser/hints.py

@@ -1004,11 +1004,14 @@ class WordHinter:
     def __init__(self):
         # will be initialized on first use.
         self.words = set()
+        self.dictionary = None
 
     def ensure_initialized(self):
         """Generate the used words if yet uninialized."""
-        if not self.words:
-            dictionary = config.get("hints", "dictionary")
+        dictionary = config.get("hints", "dictionary")
+        if not self.words or self.dictionary != dictionary:
+            self.words.clear()
+            self.dictionary = dictionary
             try:
                 with open(dictionary, encoding="UTF-8") as wordfile:
                     alphabet = set(string.ascii_lowercase)
@@ -1104,3 +1107,4 @@ class WordHinter:
             used_hints.add(hint)
             hints.append(hint)
         return hints
+

tests/integration/test_hints_html.py

@@ -62,21 +62,21 @@ def test_hints(test_name, quteproc):
 def test_word_hints_issue1393(quteproc, tmpdir):
     dict_file = tmpdir / 'dict'
     dict_file.write(textwrap.dedent("""
-        alpha
+        alph
         beta
-        gamma
-        delta
-        epsilon
+        gamm
+        delt
+        epsi
     """))
     targets = [
         ('words', 'words.txt'),
         ('smart', 'smart.txt'),
         ('hinting', 'hinting.txt'),
-        ('alpha', 'l33t.txt'),
+        ('alph', 'l33t.txt'),
         ('beta', 'l33t.txt'),
-        ('gamma', 'l33t.txt'),
-        ('delta', 'l33t.txt'),
-        ('epsilon', 'l33t.txt'),
+        ('gamm', 'l33t.txt'),
+        ('delt', 'l33t.txt'),
+        ('epsi', 'l33t.txt'),
     ]
 
     quteproc.set_setting('hints', 'mode', 'word')