[bash] Export fzf-file-widget function for bash 4+ (#546)
[bash] Export fzf-file-widget function for bash 4+ (#546)

e.g. Remapping fzf-file-widget to CTRL-X CTRL-T intead of CTRL-T

    bind -x '"\C-x\C-t": fzf-file-widget'
    bind '"\C-t": transpose-chars'

lululau/fzf,lululau/fzf,junegunn/fzf,qiemem/fzf,qiemem/fzf,stuha/wbr-zsh,wilywampa/fzf,infokiller/fzf,me-and/fzf,infokiller/fzf,wilywampa/fzf,lululau/fzf,janlazo/fzf,infokiller/fzf,me-and/fzf,tomfitzhenry/pkg-fzf,tomfitzhenry/pkg-fzf,me-and/fzf,tomfitzhenry/pkg-fzf,junegunn/fzf,janlazo/fzf,qiemem/fzf,junegunn/fzf,wilywampa/fzf,janlazo/fzf