mention for Gitlab inserts nil instead of username

[jakubbortlik]

Hi and thanks for your plugin!

I've come across an issue with the Gitlab mentions completion. It inserts nil instead of the username, even if the list of usernames and the documentation show the correct values. This can be fixed by the following change to cmp-git/lua/cmp_git/format.lua:

diff --git a/lua/cmp_git/format.lua b/lua/cmp_git/format.lua                                                                                                                                   
index a76dc20..2c4aa02 100644                                                                                                                                                                  
--- a/lua/cmp_git/format.lua                                                                                                                                                                   
+++ b/lua/cmp_git/format.lua                                                                                                                                                                   
@@ -104,7 +104,7 @@ local M = {                                                                                                                                                                
                 return string.format("@%s", mention.username)                                                                                                                                 
             end,                                                                                                                                                                              
             insertText = function(trigger_char, mention)                                                                                                                                      
-                return string.format("@%s", mention.login)                                                                                                                                    
+                return string.format("@%s", mention.username)                                                                                                                                 
             end,                                                                                                                                                                              
             filterText = function(trigger_char, mention)                                                                                                                                      
                 return string.format("%s %s", trigger_char, mention.username)

I'll be happy to open a pull request with the fix.

[petertriho]

A PR for the fix would be great. Thanks