summaryrefslogtreecommitdiffstats
path: root/shell/key-bindings.bash
blob: a789b19de9ea0e6dd21dd3f35e36c4b9710d73a8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
#     ____      ____
#    / __/___  / __/
#   / /_/_  / / /_
#  / __/ / /_/ __/
# /_/   /___/_/ key-bindings.bash
#
# - $FZF_TMUX_OPTS
# - $FZF_CTRL_T_COMMAND
# - $FZF_CTRL_T_OPTS
# - $FZF_CTRL_R_OPTS
# - $FZF_ALT_C_COMMAND
# - $FZF_ALT_C_OPTS

if [[ $- =~ i ]]; then


# Key bindings
# ------------

__fzf_defaults() {
  # $1: Prepend to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
  # $2: Append to FZF_DEFAULT_OPTS_FILE and FZF_DEFAULT_OPTS
  echo "--height ${FZF_TMUX_HEIGHT:-40%} --bind=ctrl-z:ignore $1"
  command cat "${FZF_DEFAULT_OPTS_FILE-}" 2> /dev/null
  echo "${FZF_DEFAULT_OPTS-} $2"
}

__fzf_select__() {
  FZF_DEFAULT_COMMAND=${FZF_CTRL_T_COMMAND:-} \
  FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=file,dir,follow,hidden --scheme=path" "${FZF_CTRL_T_OPTS-} -m") \
  FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) "$@" |
    while read -r item; do
      printf '%q ' "$item"  # escape special chars
    done
}

__fzfcmd() {
  [[ -n "${TMUX_PANE-}" ]] && { [[ "${FZF_TMUX:-0}" != 0 ]] || [[ -n "${FZF_TMUX_OPTS-}" ]]; } &&
    echo "fzf-tmux ${FZF_TMUX_OPTS:--d${FZF_TMUX_HEIGHT:-40%}} -- " || echo "fzf"
}

fzf-file-widget() {
  local selected="$(__fzf_select__ "$@")"
  READLINE_LINE="${READLINE_LINE:0:$READLINE_POINT}$selected${READLINE_LINE:$READLINE_POINT}"
  READLINE_POINT=$(( READLINE_POINT + ${#selected} ))
}

__fzf_cd__() {
  local dir
  dir=$(
    FZF_DEFAULT_COMMAND=${FZF_ALT_C_COMMAND:-} \
    FZF_DEFAULT_OPTS=$(__fzf_defaults "--reverse --walker=dir,follow,hidden --scheme=path" "${FZF_ALT_C_OPTS-} +m") \
    FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd)
  ) && printf 'builtin cd -- %q' "$(builtin unset CDPATH && builtin cd -- "$dir" && builtin pwd)"
}

if command -v perl > /dev/null; then
  __fzf_history__() {
    local output script
    script='BEGIN { getc; $/ = "\n\t"; $HISTCOUNT = $ENV{last_hist} + 1 } s/^[ *]//; print $HISTCOUNT - $. . "\t$_" if !$seen{$_}++'
    output=$(
      set +o pipefail
      builtin fc -lnr -2147483648 |
        last_hist=$(HISTTIMEFORMAT='' builtin history 1) command perl -n -l0 -e "$script" |
        FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} +m --read0") \
        FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) --query "$READLINE_LINE"
    ) || return
    READLINE_LINE=${output#*$'\t'}
    if [[ -z "$READLINE_POINT" ]]; then
      echo "$READLINE_LINE"
    else
      READLINE_POINT=0x7fffffff
    fi
  }
else # awk - fallback for POSIX systems
  __fzf_history__() {
    local output script n x y z d
    if [[ -z $__fzf_awk ]]; then
      __fzf_awk=awk
      # choose the faster mawk if: it's installed && build date >= 20230322 && version >= 1.3.4
      IFS=' .' read n x y z d <<< $(command mawk -W version 2> /dev/null)
      [[ $n == mawk ]] && (( d >= 20230302 && (x *1000 +y) *1000 +z >= 1003004 )) && __fzf_awk=mawk
    fi
    [[ $(HISTTIMEFORMAT='' builtin history 1) =~ [[:digit:]]+ ]]    # how many history entries
    script='function P(b) { ++n; sub(/^[ *]/, "", b); if (!seen[b]++) { printf "%d\t%s%c", '$((BASH_REMATCH + 1))' - n, b, 0 } }
    NR==1 { b = substr($0, 2); next }
    /^\t/ { P(b); b = substr($0, 2); next }
    { b = b RS $0 }
    END { if (NR) P(b) }'
    output=$(
      set +o pipefail
      builtin fc -lnr -2147483648 2> /dev/null |   # ( $'\t '<lines>$'\n' )* ; <lines> ::= [^\n]* ( $'\n'<lines> )*
        command $__fzf_awk "$script"           |   # ( <counter>$'\t'<lines>$'\000' )*
        FZF_DEFAULT_OPTS=$(__fzf_defaults "" "-n2..,.. --scheme=history --bind=ctrl-r:toggle-sort ${FZF_CTRL_R_OPTS-} +m --read0") \
        FZF_DEFAULT_OPTS_FILE='' $(__fzfcmd) --query "$READLINE_LINE"
    ) || return
    READLINE_LINE=${output#*$'\t'}
    if [[ -z "$READLINE_POINT" ]]; then
      echo "$READLINE_LINE"
    else
      READLINE_POINT=0x7fffffff
    fi
  }
fi

# Required to refresh the prompt after fzf
bind -m emacs-standard '"\er": redraw-current-line'

bind -m vi-command '"\C-z": emacs-editing-mode'
bind -m vi-insert '"\C-z": emacs-editing-mode'
bind -m emacs-standard '"\C-z": vi-editing-mode'

if (( BASH_VERSINFO[0] < 4 )); then
  # CTRL-T - Paste the selected file path into the command line
  if [[ "${FZF_CTRL_T_COMMAND-x}" != "" ]]; then
    bind -m emacs-standard '"\C-t": " \C-b\C-k \C-u`__fzf_select__`\e\C-e\er\C-a\C-y\C-h\C-e\e \C-y\ey\C-x\C-x\C-f"'
    bind -m vi-command '"\C-t": "\C-z\C-t\C-z"'
    bind -m vi-insert '"\C-t": "\C-z\C-t\C-z"'
  fi

  # CTRL-R - Paste the selected command from history into the command line
  bind -m emacs-standard '"\C-r": "\C-e \C-u\C-y\ey\C-u`__fzf_history__`\e\C-e\er"'
  bind -m vi-command '"\C-r": "\C-z\C-r\C-z"'
  bind -m vi-insert '"\C-r": "\C-z\C-r\C-z"'
else
  # CTRL-T - Paste the selected file path into the command line
  if [[ "${FZF_CTRL_T_COMMAND-x}" != "" ]]; then
    bind -m emacs-standard -x '"\C-t": fzf-file-widget'
    bind -m vi-command -x '"\C-t": fzf-file-widget'
    bind -m vi-insert -x '"\C-t": fzf-file-widget'
  fi

  # CTRL-R - Paste the selected command from history into the command line
  bind -m emacs-standard -x '"\C-r": __fzf_history__'
  bind -m vi-command -x '"\C-r": __fzf_history__'
  bind -m vi-insert -x '"\C-r": __fzf_history__'
fi

# ALT-C - cd into the selected directory
if [[ "${FZF_ALT_C_COMMAND-x}" != "" ]]; then
  bind -m emacs-standard '"\ec": " \C-b\C-k \C-u`__fzf_cd__`\e\C-e\er\C-m\C-y\C-h\e \C-y\ey\C-x\C-x\C-d"'
  bind -m vi-command '"\ec": "\C-z\ec\C-z"'
  bind -m vi-insert '"\ec": "\C-z\ec\C-z"'
fi

fi