Remove obsolete func (#377)

- remove function: SynGroup, HasColorscheme and
  GetGitBranch
- rewrite Inside_git_repo in lua instead

autoload/utils.vim

@@ -10,23 +10,6 @@ function! s:Single_quote(str) abort
   return "'" . substitute(copy(a:str), "'", "''", 'g') . "'"
 endfunction
 
-" Check the syntax group in the current cursor position, see
-" https://stackoverflow.com/q/9464844/6064933 and
-" https://jordanelver.co.uk/blog/2015/05/27/working-with-vim-colorschemes/
-function! utils#SynGroup() abort
-  if !exists('*synstack')
-    return
-  endif
-  echo map(synstack(line('.'), col('.')), 'synIDattr(v:val, "name")')
-endfunction
-
-" Check if a colorscheme exists in runtimepath.
-" The following two functions are inspired by https://stackoverflow.com/a/5703164/6064933.
-function! utils#HasColorscheme(name) abort
-  let l:pat = printf('colors/%s.vim', a:name)
-  return !empty(globpath(&runtimepath, l:pat))
-endfunction
-
 " Custom fold expr, adapted from https://vi.stackexchange.com/a/9094/15292
 function! utils#VimFolds(lnum) abort
   " get content of current line and the line below
@@ -146,27 +129,6 @@ function! utils#iso_time(timestamp) abort
 
 endfunction
 
-" Check if we are inside a Git repo.
-function! utils#Inside_git_repo() abort
-  let res = system('git rev-parse --is-inside-work-tree')
-  if match(res, 'true') == -1
-    return v:false
-  else
-    " Manually trigger a special user autocmd InGitRepo (used lazyloading.
-    doautocmd User InGitRepo
-    return v:true
-  endif
-endfunction
-
-function! utils#GetGitBranch()
-  let l:res = systemlist('git rev-parse --abbrev-ref HEAD')[0]
-  if match(l:res, 'fatal') != -1
-    return ''
-  else
-    return l:res
-  endif
-endfunction
-
 " Redirect command output to a register for later processing.
 " Ref: https://stackoverflow.com/q/2573021/6064933 and https://unix.stackexchange.com/q/8101/221410 .
 function! utils#CaptureCommandOutput(command) abort

lua/custom-autocmd.lua

@@ -206,14 +206,16 @@ api.nvim_create_autocmd({ "VimEnter", "DirChanged" }, {
   group = api.nvim_create_augroup("git_repo_check", { clear = true }),
   pattern = "*",
   desc = "check if we are inside Git repo",
-  command = "call utils#Inside_git_repo()",
+  callback = function()
+    utils.inside_git_repo()
+  end,
 })
 
 -- ref: https://vi.stackexchange.com/a/169/15292
 api.nvim_create_autocmd("BufReadPre", {
   group = api.nvim_create_augroup("large_file", { clear = true }),
   pattern = "*",
-  desc = "check if we are inside Git repo",
+  desc = "optimize for large file",
   callback = function(ev)
     local file_size_limit = 524288 -- 0.5MB
     local f = ev.file

lua/mappings.lua

@@ -143,9 +143,6 @@ keymap.set("x", "c", '"_c')
 -- Remove trailing whitespace characters
 keymap.set("n", "<leader><space>", "<cmd>StripTrailingWhitespace<cr>", { desc = "remove trailing space" })
 
--- check the syntax group of current cursor position
-keymap.set("n", "<leader>st", "<cmd>call utils#SynGroup()<cr>", { desc = "check syntax group" })
-
 -- Copy entire buffer.
 keymap.set("n", "<leader>y", "<cmd>%yank<cr>", { desc = "yank entire buffer" })
 

lua/utils.lua

@@ -79,4 +79,18 @@ function M.is_compatible_version(expected_version)
   return true
 end
 
+--- check if we are inside a git repo
+--- @return boolean
+function M.inside_git_repo()
+  local result = vim.system({ "git", "rev-parse", "--is-inside-work-tree" }, { text = true }):wait()
+  if result.code ~= 0 then
+    return false
+  end
+
+  -- Manually trigger a special user autocmd InGitRepo (used lazyloading.
+  vim.cmd([[doautocmd User InGitRepo]])
+
+  return true
+end
+
 return M