nvim: add autosplit workaround vor NeogitCommitMessage

it doesn't work with vim.g.autosplit_ft, probably because the filetype
is set later than expected

.config/nvim/lua/my/coding.lua

@@ -43,7 +43,8 @@ neogit.setup {
     kind = 'tab',
     integrations = {
         diffview = true
-    }
+    },
+    disable_insert_on_commit = false
 }
 map('n', '<Leader>gg', neogit.open, 'Open Neogit')
 
@@ -51,10 +52,16 @@ map('n', '<Leader>gg', neogit.open, 'Open Neogit')
 vim.api.nvim_create_augroup('config_coding', { clear = true })
 vim.api.nvim_create_autocmd({ 'FileType' }, {
     group = 'config_coding',
-    pattern = { 'gitcommit', 'gitrebase', 'NeogitCommitMessage' },
+    pattern = { 'gitcommit', 'gitrebase' },
     command = [[startinsert | 1]]
 })
 
+vim.api.nvim_create_autocmd({ 'FileType' }, {
+    group = 'config_coding',
+    pattern = { 'NeogitCommitMessage' },
+    callback = require('autosplit')
+})
+
 vim.api.nvim_create_autocmd({ 'FileType' }, {
     group = 'config_coding',
     pattern = { 'Neogit*' },

.config/nvim/lua/my/settings.lua

@@ -40,7 +40,7 @@ vim.api.nvim_create_user_command('Ht', 'tab help <args>', {
 -- split these vertically if there is enough space
 vim.g.autosplit_bt = { 'help', 'terminal' }
 vim.g.autosplit_ft = {
-    'man', 'fugitive', 'gitcommit', 'gitrebase', 'NeogitCommitMessage'
+    'man', 'fugitive', 'gitcommit', 'gitrebase'
 }
 
 -- theme