Merge branch 'tab_max_length' of https://github.com/fratajczak/kitty

docs/changelog.rst

@@ -57,6 +57,8 @@ Detailed list of changes
 
 - Wayland GNOME: Workaround for latest mutter release breaking full screen for semi-transparent kitty windows (:iss:`5677`)
 
+- A new option :opt:`tab_max_length` to limit the length of tab titles
+
 
 0.26.5 [2022-11-07]
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

kitty/options/definition.py

@@ -1065,6 +1065,12 @@ margin between the tab bar and the contents of the current tab.
 '''
     )
 
+opt('tab_max_length', '0', option_type='positive_int',
+    long_text='''
+The maximum number of characters a tab title can have.
+A value of zero means that no limit is applied.
+'''
+    )
 
 opt('tab_bar_style', 'fade',
     choices=('fade', 'hidden', 'powerline', 'separator', 'slant', 'custom'), ctype='!tab_bar_style',

kitty/options/parse.py

@@ -1246,6 +1246,9 @@ class Parser:
     def tab_fade(self, val: str, ans: typing.Dict[str, typing.Any]) -> None:
         ans['tab_fade'] = tab_fade(val)
 
+    def tab_max_length(self, val: str, ans: typing.Dict[str, typing.Any]) -> None:
+        ans['tab_max_length'] = positive_int(val)
+
     def tab_powerline_style(self, val: str, ans: typing.Dict[str, typing.Any]) -> None:
         val = val.lower()
         if val not in self.choices_for_tab_powerline_style:

kitty/options/types.py

@@ -433,6 +433,7 @@ option_names = (  # {{{
  'tab_bar_min_tabs',
  'tab_bar_style',
  'tab_fade',
+ 'tab_max_length',
  'tab_powerline_style',
  'tab_separator',
  'tab_switch_strategy',
@@ -581,6 +582,7 @@ class Options:
     tab_bar_min_tabs: int = 2
     tab_bar_style: choices_for_tab_bar_style = 'fade'
     tab_fade: typing.Tuple[float, ...] = (0.25, 0.5, 0.75, 1.0)
+    tab_max_length: int = 0
     tab_powerline_style: choices_for_tab_powerline_style = 'angled'
     tab_separator: str = ' ┇'
     tab_switch_strategy: choices_for_tab_switch_strategy = 'previous'

kitty/tab_bar.py

@@ -514,6 +514,7 @@ class TabBar:
             self.align = self.align_with_factor
         else:
             self.align = lambda: None
+        self.max_tab_length = opts.tab_max_length
 
     def patch_colors(self, spec: Dict[str, Optional[int]]) -> None:
         opts = get_options()
@@ -616,6 +617,8 @@ class TabBar:
         unconstrained_tab_length = max(1, s.columns - 2)
         ideal_tab_lengths = [i for i in range(len(data))]
         default_max_tab_length = max(1, (s.columns // max(1, len(data))) - 1)
+        if self.max_tab_length >= 1:
+            default_max_tab_length = min(self.max_tab_length, default_max_tab_length)
         max_tab_lengths = [default_max_tab_length for _ in range(len(data))]
         active_idx = 0
         extra = 0