In-word expansion not working

[flimofly]

Description

i option does not cause snippy to recognise triggers at the end of words

Steps to Reproduce

Given the following snippet, with the i option

snippet ft "\footnote" i
    %
      \\footnote{%
                ${1:${VISUAL:text}}%
        }
       ${0}

Expected Result

Lorem ipsumft| expands to Lorem ipsum% \footnote{% |text% }

Actual Result

No suggestion or expansion, trigger is not recognised. Trigger is however recognised when using the w option and typing Lorem ipsum.ft|

Additional Context

No response

[dcampos]

I'm not sure if I can reproduce this bug. Here's what I tried:

1. Created a minimal config at /tmp/minimal.vim (see below).
2. Added /tmp/snippets/lua.snippets containing the ft snippet.
3. Ran nvim --clean -u minimal.vim test.lua.
4. Typed Lorem ipsumft and pressed tab. It seems to have expanded correctly for me.

So, it seems manual expansion is working, but I noticed that nvim-cmp doesn't show any suggestion. I think it's filtering based on the entire word, and I'm not sure if this behavior can be changed in cmp-snippy.

Can you confirm that manual expansion is working (i.e not using nvim-cmp)?

Contents of `minimal.vim`

if has('vim_starting')
  set encoding=utf-8
endif
scriptencoding utf-8

if &compatible
  set nocompatible
endif

let s:plug_dir = expand('/tmp/plugged/vim-plug')
if !filereadable(s:plug_dir .. '/plug.vim')
  execute printf('!curl -fLo %s/autoload/plug.vim --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim', s:plug_dir)
end

execute 'set runtimepath+=' . s:plug_dir
call plug#begin(s:plug_dir)
Plug 'dcampos/nvim-snippy'
Plug 'honza/vim-snippets'
call plug#end()
PlugInstall | quit

imap <expr> <Tab> snippy#can_expand_or_advance() ? '<Plug>(snippy-expand-or-advance)' : '<Tab>'
imap <expr> <S-Tab> snippy#can_jump(-1) ? '<Plug>(snippy-previous)' : '<S-Tab>'
smap <expr> <Tab> snippy#can_jump(1) ? '<Plug>(snippy-next)' : '<Tab>'
smap <expr> <S-Tab> snippy#can_jump(-1) ? '<Plug>(snippy-previous)' : '<S-Tab>'
xmap <Tab> <Plug>(snippy-cut-text)

lua << EOF
    require('snippy').setup({
        hl_group = 'Search',
        snippet_dirs = '/tmp/snippets/',
    })
EOF

[dcampos]

This issue from cmp-nvim-ultisnips may be related: quangnguyen30192/cmp-nvim-ultisnips#78