nvim: turn my functions into proper module

.config/nvim/lua/my/functions.lua

@@ -1,4 +1,6 @@
-function MY_remove_trailing_whitespace()
+local M = {}
+
+function M.remove_trailing_whitespace()
     local curpos = vim.api.nvim_win_get_cursor(0)
     vim.cmd([[keeppatterns %s/\s\+$//e]])
     vim.api.nvim_win_set_cursor(0, curpos)
@@ -12,11 +14,11 @@ vim.api.nvim_create_autocmd(
             '*.lua', '*.cpp',
             '*.hpp', '*.conf', '*.cfg', '*.ini'
         },
-        callback = MY_remove_trailing_whitespace
+        callback = M.remove_trailing_whitespace
     }
 )
 
-function MY_insert_modeline()
+function M.insert_modeline()
     local comment_string = vim.o.commentstring
     local space_maybe = ''
     if string.match(comment_string, '%%s(.*)') ~= '' then
@@ -53,10 +55,10 @@ function MY_insert_modeline()
         print('modeline inserted')
     end
 end
-vim.cmd([[command! ModelineInsert lua MY_insert_modeline()]])
+vim.cmd([[command! ModelineInsert lua M.insert_modeline()]])
 
 -- set colorcolumn to textwidth after buffer is displayed or option is changed
-function MY_set_colorcolumn()
+function M.set_colorcolumn()
     if vim.o.textwidth > 0 then
         vim.opt_local.colorcolumn = { vim.o.textwidth }
     else
@@ -68,7 +70,7 @@ vim.api.nvim_create_autocmd(
     { 'BufEnter' },
     {
         group = 'config_settings',
-        callback = MY_set_colorcolumn
+        callback = M.set_colorcolumn
     }
 )
 vim.api.nvim_create_autocmd(
@@ -76,11 +78,11 @@ vim.api.nvim_create_autocmd(
     {
         group = 'config_settings',
         pattern = { 'textwidth' },
-        callback = MY_set_colorcolumn
+        callback = M.set_colorcolumn
     }
 )
 
-function MY_get_project_root()
+function M.get_project_root()
     local path = vim.api.nvim_buf_get_name(0)
     local root_markers = {
         '.git', '.hg', '.svn', '.bzr', '_darcs',
@@ -99,10 +101,12 @@ function MY_get_project_root()
     return nil
 end
 
-function MY_shell_capture(command)
+function M.shell_capture(command)
     local handle = io.popen(command)
     if not handle then return nil end
     local result = handle:read() or nil
     handle:close()
     return result
 end
+
+return M

.config/nvim/lua/my/tools.lua

@@ -39,7 +39,11 @@ packer.use {
         }
 
         map('n', '<Leader>tb', require('telescope.builtin').buffers)
-        map('n', '<Leader>tf', function() require('telescope.builtin').find_files({ cwd = MY_get_project_root() }) end)
+        map('n', '<Leader>tf', function()
+            require('telescope.builtin').find_files({
+                cwd = require('my.functions').get_project_root()
+            })
+        end)
         map('n', '<Leader>tr', require('telescope.builtin').oldfiles)
         map('n', '<Leader>tg', require('telescope.builtin').live_grep)
         map('n', '<Leader>tm', require('telescope.builtin').man_pages)

.config/nvim/snippets/cpp.lua

@@ -1,5 +1,3 @@
-require('my/functions')
-
 -- <https://github.com/L3MON4D3/LuaSnip/blob/69cb81cf7490666890545fef905d31a414edc15b/lua/luasnip/config.lua#L82-L104>
 local s = require("luasnip.nodes.snippet").S
 local f = require("luasnip.nodes.functionNode").F
@@ -43,6 +41,7 @@ local bsd0 =
 
 {cursor}]]
 
+local my = require('my.functions')
 return {
     s(
         {
@@ -52,7 +51,7 @@ return {
         },
         fmt(agpl, {
             project = f(function()
-                local root = MY_get_project_root()
+                local root = my.get_project_root()
                 if root then return root:gsub('.*/', '') end
                 return 'INSERT_PROJECT'
             end),
@@ -60,11 +59,11 @@ return {
                 return os.date('%Y')
             end),
             name = f(function()
-                return MY_shell_capture('git config user.name')
+                return my.shell_capture('git config user.name')
                     or 'INSERT_NAME'
             end),
             email = f(function()
-                return MY_shell_capture('git config user.email')
+                return my.shell_capture('git config user.email')
                     or 'INSERT_EMAIL'
             end),
             cursor = i()
@@ -78,7 +77,7 @@ return {
         },
         fmt(bsd0, {
             project = f(function()
-                local root = MY_get_project_root()
+                local root = my.get_project_root()
                 if root then return root:gsub('.*/', '') end
                 return 'INSERT_PROJECT'
             end),
@@ -86,11 +85,11 @@ return {
                 return os.date('%Y')
             end),
             name = f(function()
-                return MY_shell_capture('git config user.name')
+                return my.shell_capture('git config user.name')
                     or 'INSERT_NAME'
             end),
             email = f(function()
-                return MY_shell_capture('git config user.email')
+                return my.shell_capture('git config user.email')
                     or 'INSERT_EMAIL'
             end),
             cursor = i()