fix(modules): enabling disabling per buffer and globally

When a module is disabled by default in the config, running
TSBufEnable will not enable the module because the is_enabled
function will always return false, thus the module not being enabled.
Also, disabling/enabling the buffers is flaky.

This commit adds per buffer check when the module is not disabled. It
also makes the enable and disable more indempotent.

i've also renamed TS*All to TS*.

Fixes #2754

lua/nvim-treesitter/configs.lua

@@ -72,8 +72,22 @@ end
 -- @param bufnr buffer number, defaults to current buffer
 -- @param lang language, defaults to current language
 local function enable_module(mod, bufnr, lang)
+  local module = M.get_module(mod)
+  if not module then
+    return
+  end
+
   bufnr = bufnr or api.nvim_get_current_buf()
   lang = lang or parsers.get_buf_lang(bufnr)
+
+  if not module.enable then
+    if module.enabled_buffers then
+      module.enabled_buffers[bufnr] = true
+    else
+      module.enabled_buffers = { [bufnr] = true }
+    end
+  end
+
   M.attach_module(mod, bufnr, lang)
 end
 
@@ -101,19 +115,28 @@ local function enable_all(mod)
     return
   end
 
+  enable_mod_conf_autocmd(mod)
+  config_mod.enable = true
+  config_mod.enabled_buffers = nil
+
   for _, bufnr in pairs(api.nvim_list_bufs()) do
     enable_module(mod, bufnr)
   end
-
-  enable_mod_conf_autocmd(mod)
-  config_mod.enable = true
 end
 
 -- Disables and detaches the module for a buffer.
 -- @param mod path to module
 -- @param bufnr buffer number, defaults to current buffer
 local function disable_module(mod, bufnr)
+  local module = M.get_module(mod)
+  if not module then
+    return
+  end
+
   bufnr = bufnr or api.nvim_get_current_buf()
+  if module.enabled_buffers then
+    module.enabled_buffers[bufnr] = false
+  end
   M.detach_module(mod, bufnr)
 end
 
@@ -136,16 +159,17 @@ end
 -- @param mod path to module
 local function disable_all(mod)
   local config_mod = M.get_module(mod)
-  if not config_mod or not config_mod.enable then
+  if not config_mod then
     return
   end
 
+  config_mod.enabled_buffers = nil
+  disable_mod_conf_autocmd(mod)
+  config_mod.enable = false
+
   for _, bufnr in pairs(api.nvim_list_bufs()) do
     disable_module(mod, bufnr)
   end
-
-  disable_mod_conf_autocmd(mod)
-  config_mod.enable = false
 end
 
 -- Toggles a module for a buffer
@@ -291,21 +315,21 @@ M.commands = {
       "-complete=custom,nvim_treesitter#available_modules",
     },
   },
-  TSEnableAll = {
+  TSEnable = {
     run = enable_all,
     args = {
       "-nargs=+",
       "-complete=custom,nvim_treesitter#available_modules",
     },
   },
-  TSDisableAll = {
+  TSDisable = {
     run = disable_all,
     args = {
       "-nargs=+",
       "-complete=custom,nvim_treesitter#available_modules",
     },
   },
-  TSToggleAll = {
+  TSToggle = {
     run = toggle_all,
     args = {
       "-nargs=+",
@@ -347,7 +371,9 @@ function M.is_enabled(mod, lang, bufnr)
     return false
   end
 
-  if not module_config.enable or not module_config.is_supported(lang) then
+  local buffer_enabled = module_config.enabled_buffers and module_config.enabled_buffers[bufnr]
+  local config_enabled = module_config.enable or buffer_enabled
+  if not config_enabled or not module_config.is_supported(lang) then
     return false
   end