feat: also reload parsers after uninstallation

lua/nvim-treesitter/install.lua

@@ -42,6 +42,26 @@ local function get_job_status()
     .. "]"
 end
 
+---@param lang string
+---@return function
+local function reattach_if_possible_fn(lang)
+  return function()
+    for _, buf in ipairs(vim.api.nvim_list_bufs()) do
+      if parsers.get_buf_lang(buf) == lang then
+        vim._ts_remove_language(lang)
+        local ok = pcall(vim.treesitter.language.require_language, lang)
+        for _, mod in ipairs(require("nvim-treesitter.configs").available_modules()) do
+          if ok then
+            require("nvim-treesitter.configs").reattach_module(mod, buf)
+          else
+            require("nvim-treesitter.configs").detach_module(mod, buf)
+          end
+        end
+      end
+    end
+  end
+end
+
 ---@param lang string
 ---@param validate boolean|nil
 ---@return InstallInfo
@@ -384,17 +404,7 @@ local function run_install(cache_folder, install_folder, lang, repo, with_sync,
       end,
     },
     { -- auto-attach modules after installation
-      cmd = function()
+      cmd = reattach_if_possible_fn(lang),
-        for _, buf in ipairs(vim.api.nvim_list_bufs()) do
-          if parsers.get_buf_lang(buf) == lang then
-            vim._ts_remove_language(lang)
-            vim.treesitter.language.require_language(lang)
-            for _, mod in ipairs(require("nvim-treesitter.configs").available_modules()) do
-              require("nvim-treesitter.configs").reattach_module(mod, buf)
-            end
-          end
-        end
-      end,
     },
   })
   if not from_local_path then
@@ -594,6 +604,9 @@ function M.uninstall(...)
               end
             end,
           },
+          { -- auto-reattach or detach modules after uninstallation
+            cmd = reattach_if_possible_fn(lang),
+          },
         }
         M.iter_cmd(command_list, 1, lang, "Treesitter parser for " .. lang .. " has been uninstalled")
       elseif #all_parsers > 0 then