Tags matcher for ddc.vim, for tags-exec
This filter checks match for text split by RegExp.
https://github.com/vim-denops/denops.vim
https://github.com/Shougo/ddc.vim
call ddc#custom#patch_global('sourceOptions', #{
\ 'tags-exec': {
\ 'matchers': ['matcher_tags'],
\ 'splitByRegexp': '(?=[A-Z])|_',
\ 'splitUnionString': '.*',
\ }