fix(ai): make empty textobject work with selection=exclusive

Resolve #2124

Author: echasnovski

lua/mini/ai.lua

@@ -1125,7 +1125,7 @@ MiniAi.select_textobject = function(ai_type, id, opts)
     vim.cmd('normal! zv')
     vim.cmd('normal! ' .. vis_mode)
     set_cursor(tobj.to)
-    if vim.o.selection == 'exclusive' then vim.cmd('set whichwrap=l | normal! l') end
+    if vim.o.selection == 'exclusive' and not tobj_is_empty then vim.cmd('set whichwrap=l | normal! l') end
     vim.cmd('normal! zv')
 
     -- Restore horizontal view which was possibly affected by moving cursor

tests/test_ai.lua

@@ -1044,6 +1044,9 @@ T['select_textobject()']["respects 'selection=exclusive'"] = function()
 
   validate('i', ' () ')
   validate('a', '  ')
+
+  -- Works with empty regions
+  validate_select1d(' () ', 0, { 'i', ')' }, { 3, 3 })
 end
 
 T['select_textobject()']['respects `vis_mode` from textobject region'] = function()
@@ -1783,6 +1786,10 @@ T['Textobject']['works with empty output region'] = function()
 
   validate(0)
   validate(1)
+
+  child.o.selection = 'exclusive'
+  validate(0)
+  validate(1)
 end
 
 T['Textobject']['handles horizontal view for out of view textobjects'] = function()