Add --xdg option which makes the installer generate files under $XDG_CONFIG_HOME/fzf.

https://wiki.archlinux.org/index.php/Partial_upgrades#Partial_upgrades_are_unsupported

You should never `pacman -Sy <pkg>`, Arch users are expected
to keep their system already up-to-date before installing anything.

Close #1288

Close #1251

@amaravora

Close #1273

@codingCoffee

fzf-tmux temporarily turns off remain-on-exit and synchronize-panes
options. We don't have to try to restore the values of the options if
they were already turned off when fzf-tmux was started.

Fixes #1278

Restore the original values of 'remain-on-exit' and 'synchronize-panes'
options when exiting 'fzf-tmux'.

awk may not set OFS to match FS depending on the implementation.

Close #1227

Close #1268

This compensates the use of --tac. fzf will not render on the screen
until the complete list of commands are loaded.

Close #1266
Close #447

fzf used to print non-displayable characters (ascii code < 32) as '?',
but we will simply ignore those characters with this patch, just like
our terminals do.

\n and \r are exceptions. They will be printed as a space character.

TODO: \H should delete the preceding character, but this is not implemented.

Related: #1253

Close #1234

Shebangs are only for files that are directly executable. In cases
where files are only sourced (such as completion scripts), these
are unneeded.

Add String() methods to types, so they can be printed with %s. Change
some %s format specifiers to %v, when the default string representation
is good enough. In Go 1.10, `go test` triggers a parallel `go vet`. So
this also makes fzf pass `go test`.

Close #1236
Close #1219

* Document inverse prefix exact match search syntax.

* Reorder search syntax table to explain basic exact match first.

Close #1216

1. Append a single space so that step 3 won't fail
2. CTRL-E to move to the end of the line
3. CTRL-U to delete the whole line before the cursor
4. CTRL-Y to paste the deleted line
5. ESC+Y to rotate the kill ring and bring back the previous yank before step 3
6. CTRL-U to delete the whole line again
7. Paste `__fzf_history__`
8. ESC+CTRL-E to expand the command substitution
9. ESC+R to redraw the line
10. ESC+^ to expand the history entry (!NUMBER)

For now, they are respectively bound to preview-up and preview-down
by default (TBD).

Not available on tcell build.

Close #1201

Close #1203

Fix #1205

I've decided not to take more donations.

Thanks to everyone who has supported my projects.

Edgar Hipp
Eyal Levin
Philip Stewart
James O'Beirne
Minh Triet Ly
Victor Alvarez
Max Hung
Gearoid Murphy
Aaron Taylor
Brett Bender
Phil Thompson
Anders Damsgaard

Close #681

Close #1172

This reverts commit 2f1edeff.

- Close #1169
- https://github.com/gdamore/tcell/pull/159

The issue is fixed in https://github.com/vim/vim/commit/1232624ae5b56c167c5982a2620f736c4bbc19ef

After _completion_loader is called, instead of loading the entire
completion.bash file, just restore the fzf completion for the current
command. `_fzf_orig_completion_$cmd` is only set if _completion_loader
actually changed the completion options to avoid infinite loop.

Close #1170

'accept-non-empty' is similar to 'accept' (which is bound to 'enter' and
'double-click' by default) but it prevents fzf from exiting without any
selection.

Close #1162