fix(icons): update get() to work when cwd is removed from disk

Resolve #2455

Co-authored-by: Evgeni Chasnovski <evgeni.chasnovski@gmail.com>

Author: abeldekat

lua/mini/icons.lua

@@ -2216,7 +2216,12 @@ H.filetype_match = function(filename)
     H.set_buf_name(buf_id, 'filetype-match-scratch')
     H.scratch_buf_id = buf_id
   end
-  return vim.filetype.match({ filename = filename, buf = H.scratch_buf_id })
+
+  -- `vim.filetype.match` can error for relative path when cwd does not exist
+  local ok, ft = pcall(vim.filetype.match, { filename = filename, buf = H.scratch_buf_id })
+  if ok then return ft end
+  ok, ft = pcall(vim.filetype.match, { filename = '~/' .. filename, buf = H.scratch_buf_id })
+  return ok and ft or nil
 end
 
 -- Utilities ------------------------------------------------------------------

tests/dir-icons/file.txt

@@ -653,6 +653,23 @@ T['get()']['can be used without `setup()`'] = function()
   eq(child.lua_get('{ require("mini.icons").get("default", "file") }'), { '󰈔', 'MiniIconsGrey', false })
 end
 
+T['get()']['works with deleted cwd'] = function()
+  local temp_dir = 'tests/dir-icons/temp'
+  vim.fn.mkdir(temp_dir, 'p')
+  MiniTest.finally(function() vim.fn.delete(temp_dir, 'rf') end)
+
+  local file_path = child.fn.fnamemodify('tests/dir-icons/file.txt', ':p')
+  child.fn.chdir(temp_dir)
+  vim.fn.delete(temp_dir, 'rf')
+
+  -- Should use `vim.filetype.match` without errors due to missing cwd
+  eq(get('extension', 'xpm'), { '󰍹', 'MiniIconsYellow', false })
+  eq(get('extension', 'unknown'), { '󰈔', 'MiniIconsGrey', true })
+  eq(get('file', 'hello.tcsh'), { '', 'MiniIconsAzure', false })
+  eq(get('file', file_path), { '󰦪', 'MiniIconsYellow', false })
+  eq(get('file', 'does-not-exist'), { '󰈔', 'MiniIconsGrey', true })
+end
+
 T['get()']['handles deleting all buffers'] = function()
   -- As `vim.filetype.match()` requries a buffer to be more useful, make sure
   -- that there is a persistent helper buffer