How to change tab behaviour in neovim as specified (luasnip+lsp-popup)

Plugins
1

I have currently set tab to what is suggested by nvim-cmp:

    
    mapping = {
            -------other mappings --------

        ["<Tab>"] = cmp.mapping(function(fallback)
          if cmp.visible() then
            cmp.select_next_item()
          elseif luasnip.expand_or_jumpable() then
            luasnip.expand_or_jump()
          elseif has_words_before() then
            cmp.complete()
          else
            fallback()
          end
        end, { "i", "s" }),
        ["<S-Tab>"] = cmp.mapping(function(fallback)
          if cmp.visible() then
            cmp.select_prev_item()
          elseif luasnip.jumpable(-1) then
            luasnip.jump(-1)
          else
            fallback()
          end
        end, { "i", "s" }),

            -------other mappings --------
    }

This is sort of behavior I want but there is one problem.
Say I used a snippet which has multiple placeholders, I write in one of them and then exit insert mode and get into command mode. Now I do not change other place holders and want to insert a tab somewhere else in code, but nvim-cmp assumes(or seems to me atleast) that I am in snippet and would want to jump some characters, and tab will do that. But actually I want to insert actual tab character.

Behaviour I want:
A soon as I exit insert mode, it forgets all placeholder positions. Then I will be able to insert tab. According to me if I wanted to complete a snippet I could have done it in insert mode only.

Please hint to solution or provide required configuration.

I have been able to partially achieve this using (thanks to shaeinst):


mapping = {
-------other mappings --------

        ["<Tab>"] = cmp.mapping(function(fallback)
          if cmp.visible() then
            cmp.select_next_item()
          elseif luasnip.expand_or_locally_jumpable() then
            luasnip.expand_or_jump()
          --elseif has_words_before() then
            --cmp.complete()
          else
            fallback()
          end
        end, { "i", "s" }),
    }

Using this, cursor only jumps to placeholders when I am inside snippet and also once I have covered all placeholders, it does not jump back. But still my requirement is that as soon as I exit insert mode, all the placeholders are neglected, but untill I am in insert mode I would like to even cycle through placeholders.

2

this might help you