# Buggy code
def _minimum_tab_size_hint_helper(
    self, tab_text: str, icon_width: int, ellipsis: bool
) -> QSize:
    """Helper function to cache tab results.

    Config values accessed in here should be added to _on_config_changed to
    ensure cache is flushed when needed.
    """
    text = "\u2026" if ellipsis else tab_text
    # Don't ever shorten if text is shorter than the ellipsis

    def _text_to_width(text):
        # Calculate text width taking into account qt mnemonics
        return self.fontMetrics().size(Qt.TextShowMnemonic, text).width()

    text_width = min(_text_to_width(text), _text_to_width(tab_text))
    padding = config.val.tabs.padding
    indicator_width = config.val.tabs.indicator.width
    indicator_padding = config.val.tabs.indicator.padding
    padding_h = padding.left + padding.right
    # Only add padding if indicator exists
    if indicator_width != 0:
        padding_h += indicator_padding.left + indicator_padding.right
    padding_v = padding.top + padding.bottom
    height = self.fontMetrics().height() + padding_v
    width = text_width + icon_width + padding_h + indicator_width
    return QSize(width, height)


# Traceback (ValueError)
16:39:44 DEBUG    init       app:_init_modules:468 Initializing websettings...
16:39:45 ERROR    misc       crashsignal:exception_hook:216 Uncaught exception
Traceback (most recent call last):
File "/bin/qutebrowser", line 11, in <module>
load_entry_point('qutebrowser==1.1.1', 'gui_scripts', 'qutebrowser')()
File "/usr/lib/python3.6/site-packages/qutebrowser/qutebrowser.py", line 188, in main
return app.run(args)
File "/usr/lib/python3.6/site-packages/qutebrowser/app.py", line 137, in run
init(args, crash_handler)
File "/usr/lib/python3.6/site-packages/qutebrowser/app.py", line 163, in init
_init_modules(args, crash_handler)
File "/usr/lib/python3.6/site-packages/qutebrowser/app.py", line 469, in _init_modules
websettings.init(args)
File "/usr/lib/python3.6/site-packages/qutebrowser/config/websettings.py", line 215, in init
webenginesettings.init(args)
File "/usr/lib/python3.6/site-packages/qutebrowser/browser/webengine/webenginesettings.py", line 297, in init
websettings.init_mappings(MAPPINGS)
File "/usr/lib/python3.6/site-packages/qutebrowser/config/websettings.py", line 198, in init_mappings
mapping.set(value)
File "/usr/lib/python3.6/site-packages/qutebrowser/config/websettings.py", line 72, in set
self._set(value, settings=settings)
File "/usr/lib/python3.6/site-packages/qutebrowser/browser/webengine/webenginesettings.py", line 154, in _set
filenames = [self._find_installed(code) for code in value]
File "/usr/lib/python3.6/site-packages/qutebrowser/browser/webengine/webenginesettings.py", line 154, in <listcomp>
filenames = [self._find_installed(code) for code in value]
File "/usr/lib/python3.6/site-packages/qutebrowser/browser/webengine/webenginesettings.py", line 143, in _find_installed
local_filename = spell.local_filename(code)
File "/usr/lib/python3.6/site-packages/qutebrowser/browser/webengine/spell.py", line 64, in local_filename
all_installed = local_files(code)
File "/usr/lib/python3.6/site-packages/qutebrowser/browser/webengine/spell.py", line 51, in local_files
for matching_dict in sorted(matching_dicts, key=version, reverse=True):
File "/usr/lib/python3.6/site-packages/qutebrowser/browser/webengine/spell.py", line 36, in version
.format(filename))
ValueError: the given dictionary file name is malformed: /usr/share/qt/qtwebengine_dictionaries/en-US.bdic

# Fixed code
def _minimum_tab_size_hint_helper(
    self, tab_text: str, icon_width: int, ellipsis: bool, pinned: bool
) -> QSize:
    """Helper function to cache tab results.

    Config values accessed in here should be added to _on_config_changed to
    ensure cache is flushed when needed.
    """
    text = "\u2026" if ellipsis else tab_text
    # Don't ever shorten if text is shorter than the ellipsis

    def _text_to_width(text):
        # Calculate text width taking into account qt mnemonics
        return self.fontMetrics().size(Qt.TextShowMnemonic, text).width()

    text_width = min(_text_to_width(text), _text_to_width(tab_text))
    padding = config.val.tabs.padding
    indicator_width = config.val.tabs.indicator.width
    indicator_padding = config.val.tabs.indicator.padding
    padding_h = padding.left + padding.right
    # Only add padding if indicator exists
    if indicator_width != 0:
        padding_h += indicator_padding.left + indicator_padding.right
    padding_v = padding.top + padding.bottom
    height = self.fontMetrics().height() + padding_v
    width = text_width + icon_width + padding_h + indicator_width
    min_width = config.val.tabs.min_width
    if (
        not self.vertical
        and min_width > 0
        and not pinned
        or not config.val.tabs.pinned.shrink
    ):
        width = max(min_width, width)
    return QSize(width, height)