qiaomuf/libbash — comment on commit e6d7f3a96a8850199da5d71d717243333943549c
File: bashast/bashast.g line 664
By qiaomuf:

I did spend a lot of time trying not to create this new virtual token but instead, use token rewriting like:
non_dquote -> ESC["\\"] non_dquote;
But I always cannot get the correct result from the tree walker.