See https://github.com/golang/go/issues/31044

1.14 for 32-bit binaries

Fix #2373

  # Display top 3 lines as the fixed header
  fzf --preview 'bat --style=header,grid --color=always {}' --preview-window '~3'

Fix #2346

Fix #2346

Fix #2372

This commit speeds up the parsing/processing of ANSI escape codes by
roughly 7.5x. The speedup is mostly accomplished by replacing the regex
with dedicated parsing logic (nextAnsiEscapeSequence()) and reducing the
number of allocations in extractColor().

#### Benchmarks
```
name             old time/op    new time/op     delta
ExtractColor-16    4.89µs ± 5%     0.64µs ± 2%   -86.87%  (p=0.000 n=9+9)

name             old speed      new speed       delta
ExtractColor-16  25.6MB/s ± 5%  194.6MB/s ± 2%  +661.43%  (p=0.000 n=9+9)

name             old alloc/op   new alloc/op    delta
ExtractColor-16    1.37kB ± 0%     0.31kB ± 0%   -77.31%  (p=0.000 n=10+10)

name             old allocs/op  new allocs/op   delta
ExtractColor-16      48.0 ± 0%        4.0 ± 0%   -91.67%  (p=0.000 n=10+10)
```

Co-authored-by: Junegunn Choi <junegunn.c@gmail.com>

Fix #2367

EventBox.Set should not be called while holding the terminal mutex

  goroutine 1 [semacquire]:
  sync.runtime_SemacquireMutex(0xc0001923bc, 0x1000001066200, 0x1)
          /usr/local/Cellar/go/1.16/libexec/src/runtime/sema.go:71 +0x47
  sync.(*Mutex).lockSlow(0xc0001923b8)
          /usr/local/Cellar/go/1.16/libexec/src/sync/mutex.go:138 +0x105
  sync.(*Mutex).Lock(...)
          /usr/local/Cellar/go/1.16/libexec/src/sync/mutex.go:81
  github.com/junegunn/fzf/src.(*Terminal).Input(0xc000192000, 0x0, 0x0, 0x0, 0x0)
          /fzf/src/terminal.go:581 +0x145
  github.com/junegunn/fzf/src.Run.func10(0xc00010c8a0, 0xc000092050, 0xa)
          /fzf/src/core.go:245 +0x37
  github.com/junegunn/fzf/src.Run.func11(0xc00011a4e0)
          /fzf/src/core.go:295 +0x5ce
  github.com/junegunn/fzf/src/util.(*EventBox).Wait(0xc00011a4e0, 0xc000127ec8)
          /fzf/src/util/eventbox.go:34 +0x5e
  github.com/junegunn/fzf/src.Run(0xc000180000, 0x11ac014, 0x6, 0x11ac158, 0x7)
          /fzf/src/core.go:251 +0xdac
  main.main()
          /fzf/main.go:13 +0x5a

  goroutine 11 [semacquire]:
  sync.runtime_SemacquireMutex(0xc00012c31c, 0xc00010e800, 0x1)
          /usr/local/Cellar/go/1.16/libexec/src/runtime/sema.go:71 +0x47
  sync.(*Mutex).lockSlow(0xc00012c318)
          /usr/local/Cellar/go/1.16/libexec/src/sync/mutex.go:138 +0x105
  sync.(*Mutex).Lock(0xc00012c318)
          /usr/local/Cellar/go/1.16/libexec/src/sync/mutex.go:81 +0x47
  github.com/junegunn/fzf/src/util.(*EventBox).Set(0xc00011a4e0, 0x7, 0x114eb40, 0x1265460)
          /fzf/src/util/eventbox.go:40 +0x3b
  github.com/junegunn/fzf/src.(*Terminal).killPreview(0xc000192000, 0x0)
          /fzf/src/terminal.go:1831 +0xa5
  github.com/junegunn/fzf/src.(*Terminal).exit(0xc000192000, 0xc000106e58)
          /fzf/src/terminal.go:1847 +0x75
  github.com/junegunn/fzf/src.(*Terminal).Loop.func8.1(0xc00011a540)
          /fzf/src/terminal.go:2148 +0x38f
  github.com/junegunn/fzf/src/util.(*EventBox).Wait(0xc00011a540, 0xc000106f90)
          /fzf/src/util/eventbox.go:34 +0x5e
  github.com/junegunn/fzf/src.(*Terminal).Loop.func8(0xc000192000, 0xc00010a2c0)
          /fzf/src/terminal.go:2077 +0xa5
  created by github.com/junegunn/fzf/src.(*Terminal).Loop
          /fzf/src/terminal.go:2072 +0x3e8

For some reason, `test_ctrl_r` and `test_ctrl_r_abort` are not passing
on GitHub Action runner with Fish 3.2.0.

$USER is missing

Fix #2381
Close #2382

Fix #2374

Co-authored-by: Junegunn Choi <junegunn.c@gmail.com>

Otherwise, the jump list will contain a (hidden) entry for the FZF buffer if `window: enew` is used.

Close #2361

Close #2358

Workaround for Neovim v0.5.0-dev

https://github.com/junegunn/fzf/issues/2352#issuecomment-782894123

Fix #2352
Fix https://github.com/junegunn/fzf.vim/issues/1216

Close #2364

Co-authored-by: Ryan Ou <ryanou@aetherai.com>

Remove Linuxbrew links since Linuxbrew has been merged into Homebrew

* https://brew.sh/2019/02/02/homebrew-2.0.0/

Fix #2357

Fix #2352

`precmd` hooks expect the Zsh Line Editor to not be active.
Running these when the ZLE is active can lead to unpredictable results.
See https://github.com/marlonrichert/zsh-autocomplete/issues/180