hammerspoon: sync

hammerspoon/.hammerspoon/keyboard/delete-words.lua

@@ -0,0 +1,70 @@
+local log = hs.logger.new('delete-words.lua', 'debug')
+
+local isInTerminal = function()
+  app = hs.application.frontmostApplication():name()
+  return app == 'iTerm2' or app == 'Terminal'
+end
+
+-- Use option + h to delete previous word
+hs.hotkey.bind({'alt'}, 'h', function()
+  if isInTerminal() then
+    keyUpDown({'ctrl'}, 'w')
+  else
+    keyUpDown({'alt'}, 'delete')
+  end
+end)
+
+-- Use option + l to delete next word
+hs.hotkey.bind({'alt'}, 'l', function()
+  if isInTerminal() then
+    keyUpDown({}, 'escape')
+    keyUpDown({}, 'd')
+  else
+    keyUpDown({'alt'}, 'forwarddelete')
+  end
+end)
+
+-- Use control + u to delete to beginning of line
+--
+-- In bash, control + u automatically deletes to the beginning of the line, so
+-- we don't need (or want) this hotkey in the terminal. If this hotkey was
+-- enabled in the terminal, it would break the standard control + u behavior.
+-- Therefore, we only enable this hotkey for non-terminal apps.
+local wf = hs.window.filter.new():setFilters({iTerm2 = false, Terminal = false})
+enableHotkeyForWindowsMatchingFilter(wf, hs.hotkey.new({'ctrl'}, 'u', function()
+  keyUpDown({'cmd'}, 'delete')
+end))
+
+-- Use control + ; to delete to end of line
+--
+-- I prefer to use control+h/j/k/l to move left/down/up/right by one pane in all
+-- multi-pane apps (e.g., iTerm, various editors). That's convenient and
+-- consistent, but it conflicts with the default macOS binding for deleting to
+-- the end of the line (i.e., control+k). To maintain that very useful
+-- functionality, and to keep it on the home row, this hotkey binds control+; to
+-- delete to the end of the line.
+hs.hotkey.bind({'ctrl'}, ';', function()
+  -- If we're in the terminal, then temporarily disable our custom control+k
+  -- hotkey used for pane navigation, then fire control+k to delete to the end
+  -- of the line, and then renable the control+k hotkey.
+  --
+  -- If we're not in the terminal, then just select to the end of the line and
+  -- then delete the selected text.
+  if isInTerminal() then
+    hotkeyForControlK = hs.fnutils.find(hs.hotkey.getHotkeys(), function(hotkey)
+      return hotkey.idx == '⌃K'
+    end)
+    if hotkeyForControlK then hotkeyForControlK:disable() end
+
+    keyUpDown({'ctrl'}, 'k')
+
+    -- Allow some time for the control+k keystroke to fire asynchronously before
+    -- we re-enable our custom control+k hotkey.
+    hs.timer.doAfter(0.2, function()
+      if hotkeyForControlK then hotkeyForControlK:enable() end
+    end)
+  else
+    keyUpDown({'cmd', 'shift'}, 'right')
+    keyUpDown({}, 'forwarddelete')
+  end
+end)