update conf related to firenvim

1. Change autocmd for buffers started by firenivm, it seems that
   BufNewFile does not work as intended, in contrast, BufEnter, BufRead,
   BufWinEnter seem to work.
2. Disable several plugins if we are using firenvim, these plugins
   include dashboard-nvim, lualine, bufferline.nvim

2 files changed, 23 insertions, 8 deletions

diff --git a/core/plugins.vim b/core/plugins.vim
index 3d9dce3..89d792b 100644
--- a/core/plugins.vim
+++ b/core/plugins.vim
@@ -362,16 +362,20 @@ if exists('g:started_by_firenvim') && g:started_by_firenvim
       \ }
   \ }
 
-  function! s:setup_firenvim() abort
-    set noruler noshowcmd
-    set laststatus=0 showtabline=0
+  function s:setup_firenvim() abort
+    set signcolumn=no
+    set noruler
+    set noshowcmd
+    set laststatus=0
+    set showtabline=0
   endfunction
 
   augroup firenvim
     autocmd!
-    autocmd FileType text call s:setup_firenvim()
-    autocmd BufNewFile github.com_*.txt set filetype=markdown
-    autocmd BufNewFile stackoverflow.com_*.txt set filetype=markdown
+    autocmd BufEnter * call s:setup_firenvim()
+    autocmd BufEnter sqlzoo*.txt set filetype=sql
+    autocmd BufEnter github.com_*.txt set filetype=markdown
+    autocmd BufEnter stackoverflow.com_*.txt set filetype=markdown
   augroup END
 endif
 
diff --git a/lua/plugins.lua b/lua/plugins.lua
index f09d6b9..c4f7dc3 100644
--- a/lua/plugins.lua
+++ b/lua/plugins.lua
@@ -28,6 +28,11 @@ vim.cmd("packadd packer.nvim")
 local packer = require("packer")
 local packer_util = require("packer.util")
 
+-- check if firenvim is active
+local firenvim_not_active = function()
+  return not vim.g.started_by_firenvim
+end
+
 packer.startup {
   function(use)
     -- it is recommended to put impatient.nvim before any other plugins
@@ -130,13 +135,19 @@ packer.startup {
     use {
       "nvim-lualine/lualine.nvim",
       event = "VimEnter",
+      cond = firenvim_not_active,
       config = [[require('config.statusline')]],
     }
 
-    use { "akinsho/bufferline.nvim", event = "VimEnter", config = [[require('config.bufferline')]] }
+    use { "akinsho/bufferline.nvim", event = "VimEnter",
+      cond = firenvim_not_active,
+      config = [[require('config.bufferline')]] }
 
     -- fancy start screen
-    use { "glepnir/dashboard-nvim", event = "VimEnter", config = [[require('config.dashboard-nvim')]] }
+    use { "glepnir/dashboard-nvim", event = "VimEnter",
+      cond = firenvim_not_active,
+      config = [[require('config.dashboard-nvim')]]
+    }
 
     use {
       "lukas-reineke/indent-blankline.nvim",