This makes it easier to override FZF command like follows:

    autocmd VimEnter * command! -nargs=? -bang -complete=dir FZF call fzf#run({
          \ 'sink': 'tabe',
          \ 'dir': <q-args>,
          \ 'options': '-m',
          \ 'tmux_height': empty('<bang>') ? '40%' : '' })

- `[ -f ~/.fzf.${shell} ] && source ~/.fzf.${shell}"`
- `source ~/.fzf.${shell}"`

So only check for file name

Related #95.

Follow symlinks when using bash autocompletion.

Remove `1` from --nth option. With the change you can no more use `$`
anchor to match the tail of a command index. But it makes search
around 15% faster.

    jg@jg:~> time cat history | fzf +s -n..,1,2.. -f fzf > /dev/nul
    real    0m2.929s
    user    0m2.766s
    sys     0m0.154s

    jg@jg:~> time cat history | fzf +s -n2..,.. -f fzf > /dev/null
    real    0m2.535s
    user    0m2.422s
    sys     0m0.112s

Fixed escaping bug of the previous commit

This reverts commit cc9938d4.

Add control + left/right key mappings

On Ubuntu/Debian, completion functions can be dynamically loaded via
_completion_loader. Since those functions are not visible when
fzf-completion.bash is loaded, we need this special hack to make it
possible to fail back to the original completion function when trigger
sequence is not found.

Old versions of sed does not have -E option

Although a major overhaul is ongoing (#67), it is not yet finished and
cannot be considered stable enough for the next release. This commit
fixes a few apparent issues with small change to the current
implementation.

- Fixed error when $TMPDIR is not defined
- Better escaping of file/directory names
- Splitted functions to workaround fish bug

[bash-completion] Fail back to original completion