.bash_profile: Fix history with real persist

Use custom fzf completion and bindings.

5 files changed, 525 insertions, 19 deletions

diff --git a/.bash_profile b/.bash_profile
index 7f0bc8c..d295098 100644
--- a/.bash_profile
+++ b/.bash_profile
@@ -51,6 +51,8 @@ export GOPATH="$XDG_DATA_HOME/go"
 export GTK2_RC_FILES="$XDG_CONFIG_HOME/gtk-2.0/gtkrc-2.0"
 export GTK_OVERLAY_SCROLLING=0
 export HISTCONTROL=ignoreboth:erasedups
+export HISTFILE="$XDG_CACHE_HOME/bash.history"
+export HISTFILEPERSIST="$XDG_DATA_HOME/bash/history"
 export HISTFILESIZE=-1
 export HISTSIZE=-1
 export HISTTIMEFORMAT="%d/%m/%y %T "
@@ -62,7 +64,7 @@ export MANPAGER="vim -M +MANPAGER -"
 export MPLAYER_HOME="$XDG_CONFIG_HOME/mplayer"
 export NPM_CONFIG_USERCONFIG="$XDG_CONFIG_HOME/npmrc"
 export PASSWORD_STORE_DIR="$XDG_CONFIG_HOME/pass"
-export PROMPT_COMMAND='cd .; history -a; history -n'
+export PROMPT_COMMAND='cd .; history -a; history -n; (bashhistory &)'
 export PYTHONSTARTUP="$XDG_CONFIG_HOME/python/pythonrc"
 export RECOLL_CONFDIR="$XDG_CONFIG_HOME/recoll"
 export RUSTUP_HOME="$XDG_DATA_HOME/rustup"
diff --git a/.bashrc b/.bashrc
index 66a7d8c..c765041 100644
--- a/.bashrc
+++ b/.bashrc
@@ -1,37 +1,37 @@
 #!/bin/bash -eu
 
 # source exports
-export BASH_PROFILE=1 && . "$HOME/.bash_profile";
+export BASH_PROFILE=1 && . "$HOME/.bash_profile"
 
 # bail if not interactive
-printf '%s' "$-" | grep -q "i" || return;
+printf '%s' "$-" | grep -q "i" || return
 
 # cd using directory name
-shopt -s autocd;
+shopt -s autocd
 
 # append bash history entries
-shopt -s histappend;
+shopt -s histappend
 
 # bash history one command per line
-shopt -s cmdhist;
+shopt -s cmdhist
 
 # disable program completion
-shopt -u progcomp;
+shopt -u progcomp
 
 # enable vi mode
-set -o vi;
+set -o vi
 
 # disable ctrl+s
-stty stop '';
-stty start '';
-stty -ixon;
-stty -ixoff;
+stty stop ''
+stty start ''
+stty -ixon
+stty -ixoff
 
 # fzf bindings
-fzfcompletion=$(readlink "$(type -P fzf)" | cut -d '/' -f -4)/share/fzf/completion.bash;
-fzfkeybindings=$(readlink "$(type -P fzf)" | cut -d '/' -f -4)/share/fzf/key-bindings.bash;
-[ -f "$fzfcompletion" ] && . "$fzfcompletion";
-[ -f "$fzfkeybindings" ] && . "$fzfkeybindings";
+fzfcompletion="$HOME/.config/fzf/completion.bash"
+fzfkeybindings="$HOME/.config/fzf/key-bindings.bash"
+[ -f "$fzfcompletion" ] && . "$fzfcompletion"
+[ -f "$fzfkeybindings" ] && . "$fzfkeybindings"
 
 # set virtual console colors
 if [ "$TERM" = "linux" ]; then
@@ -119,9 +119,6 @@ lxc-destroy() { for container in "$@"; do $(type -P lxc-destroy) --name "$contai
 # source fzf markers
 [ -f "$HOME/.config/fzf/marks.plugin.bash" ] && . "$HOME/.config/fzf/marks.plugin.bash"
 
-# remove bash history duplicates
-history-remove-duplicates() { awk '!visited[$0]++' "$HOME/.bash_history" | sponge "$HOME/.bash_history"; }
-
 # extract docker container as rootfs
 docker-rootfs() { id=$(docker run --detach "$1" /bin/true) \
   && docker export "$id" --output "rootfs.tar" \
diff --git a/.config/fzf/completion.bash b/.config/fzf/completion.bash
new file mode 100644
index 0000000..21aa450
--- /dev/null
+++ b/.config/fzf/completion.bash
@@ -0,0 +1,381 @@
+#     ____      ____
+#    / __/___  / __/
+#   / /_/_  / / /_
+#  / __/ / /_/ __/
+# /_/   /___/_/ completion.bash
+#
+# - $FZF_TMUX               (default: 0)
+# - $FZF_TMUX_OPTS          (default: empty)
+# - $FZF_COMPLETION_TRIGGER (default: '**')
+# - $FZF_COMPLETION_OPTS    (default: empty)
+
+if [[ $- =~ i ]]; then
+
+# To use custom commands instead of find, override _fzf_compgen_{path,dir}
+if ! declare -f _fzf_compgen_path > /dev/null; then
+  _fzf_compgen_path() {
+    echo "$1"
+    command find -L "$1" \
+      -name .git -prune -o -name .hg -prune -o -name .svn -prune -o \( -type d -o -type f -o -type l \) \
+      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
+  }
+fi
+
+if ! declare -f _fzf_compgen_dir > /dev/null; then
+  _fzf_compgen_dir() {
+    command find -L "$1" \
+      -name .git -prune -o -name .hg -prune -o -name .svn -prune -o -type d \
+      -a -not -path "$1" -print 2> /dev/null | sed 's@^\./@@'
+  }
+fi
+
+###########################################################
+
+# To redraw line after fzf closes (printf '\e[5n')
+bind '"\e[0n": redraw-current-line' 2> /dev/null
+
+__fzf_comprun() {
+  if [[ "$(type -t _fzf_comprun 2>&1)" = function ]]; then
+    _fzf_comprun "$@"
+  elif [[ -n "$TMUX_PANE" ]] && { [[ "${FZF_TMUX:-0}" != 0 ]] || [[ -n "$FZF_TMUX_OPTS" ]]; }; then
+    shift
+    fzf-tmux ${FZF_TMUX_OPTS:--d${FZF_TMUX_HEIGHT:-40%}} -- "$@"
+  else
+    shift
+    fzf "$@"
+  fi
+}
+
+__fzf_orig_completion() {
+  local l comp f cmd
+  while read -r l; do
+    if [[ "$l" =~ ^(.*\ -F)\ *([^ ]*).*\ ([^ ]*)$ ]]; then
+      comp="${BASH_REMATCH[1]}"
+      f="${BASH_REMATCH[2]}"
+      cmd="${BASH_REMATCH[3]}"
+      [[ "$f" = _fzf_* ]] && continue
+      printf -v "_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}" "%s" "${comp} %s ${cmd} #${f}"
+      if [[ "$l" = *" -o nospace "* ]] && [[ ! "$__fzf_nospace_commands" = *" $cmd "* ]]; then
+        __fzf_nospace_commands="$__fzf_nospace_commands $cmd "
+      fi
+    fi
+  done
+}
+
+_fzf_opts_completion() {
+  local cur prev opts
+  COMPREPLY=()
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  prev="${COMP_WORDS[COMP_CWORD-1]}"
+  opts="
+    -x --extended
+    -e --exact
+    --algo
+    -i +i
+    -n --nth
+    --with-nth
+    -d --delimiter
+    +s --no-sort
+    --tac
+    --tiebreak
+    -m --multi
+    --no-mouse
+    --bind
+    --cycle
+    --no-hscroll
+    --jump-labels
+    --height
+    --literal
+    --reverse
+    --margin
+    --inline-info
+    --prompt
+    --pointer
+    --marker
+    --header
+    --header-lines
+    --ansi
+    --tabstop
+    --color
+    --no-bold
+    --history
+    --history-size
+    --preview
+    --preview-window
+    -q --query
+    -1 --select-1
+    -0 --exit-0
+    -f --filter
+    --print-query
+    --expect
+    --sync"
+
+  case "${prev}" in
+  --tiebreak)
+    COMPREPLY=( $(compgen -W "length begin end index" -- "$cur") )
+    return 0
+    ;;
+  --color)
+    COMPREPLY=( $(compgen -W "dark light 16 bw" -- "$cur") )
+    return 0
+    ;;
+  --history)
+    COMPREPLY=()
+    return 0
+    ;;
+  esac
+
+  if [[ "$cur" =~ ^-|\+ ]]; then
+    COMPREPLY=( $(compgen -W "${opts}" -- "$cur") )
+    return 0
+  fi
+
+  return 0
+}
+
+_fzf_handle_dynamic_completion() {
+  local cmd orig_var orig ret orig_cmd orig_complete
+  cmd="$1"
+  shift
+  orig_cmd="$1"
+  orig_var="_fzf_orig_completion_$cmd"
+  orig="${!orig_var##*#}"
+  if [[ -n "$orig" ]] && type "$orig" > /dev/null 2>&1; then
+    $orig "$@"
+  elif [[ -n "$_fzf_completion_loader" ]]; then
+    orig_complete=$(complete -p "$orig_cmd" 2> /dev/null)
+    _completion_loader "$@"
+    ret=$?
+    # _completion_loader may not have updated completion for the command
+    if [[ "$(complete -p "$orig_cmd" 2> /dev/null)" != "$orig_complete" ]]; then
+      __fzf_orig_completion < <(complete -p "$orig_cmd" 2> /dev/null)
+      if [[ "$__fzf_nospace_commands" = *" $orig_cmd "* ]]; then
+        eval "${orig_complete/ -F / -o nospace -F }"
+      else
+        eval "$orig_complete"
+      fi
+    fi
+    return $ret
+  fi
+}
+
+__fzf_generic_path_completion() {
+  local cur base dir leftover matches trigger cmd
+  cmd="${COMP_WORDS[0]//[^A-Za-z0-9_=]/_}"
+  COMPREPLY=()
+  trigger=${FZF_COMPLETION_TRIGGER-'**'}
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  if [[ "$cur" == *"$trigger" ]]; then
+    base=${cur:0:${#cur}-${#trigger}}
+    eval "base=$base"
+
+    [[ $base = *"/"* ]] && dir="$base"
+    while true; do
+      if [[ -z "$dir" ]] || [[ -d "$dir" ]]; then
+        leftover=${base/#"$dir"}
+        leftover=${leftover/#\/}
+        [[ -z "$dir" ]] && dir='.'
+        [[ "$dir" != "/" ]] && dir="${dir/%\//}"
+        matches=$(eval "$1 $(printf %q "$dir")" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS $2" __fzf_comprun "$4" -q "$leftover" | while read -r item; do
+          printf "%q$3 " "$item"
+        done)
+        matches=${matches% }
+        [[ -z "$3" ]] && [[ "$__fzf_nospace_commands" = *" ${COMP_WORDS[0]} "* ]] && matches="$matches "
+        if [[ -n "$matches" ]]; then
+          COMPREPLY=( "$matches" )
+        else
+          COMPREPLY=( "$cur" )
+        fi
+        printf '\e[5n'
+        return 0
+      fi
+      dir=$(dirname "$dir")
+      [[ "$dir" =~ /$ ]] || dir="$dir"/
+    done
+  else
+    shift
+    shift
+    shift
+    _fzf_handle_dynamic_completion "$cmd" "$@"
+  fi
+}
+
+_fzf_complete() {
+  # Split arguments around --
+  local args rest str_arg i sep
+  args=("$@")
+  sep=
+  for i in "${!args[@]}"; do
+    if [[ "${args[$i]}" = -- ]]; then
+      sep=$i
+      break
+    fi
+  done
+  if [[ -n "$sep" ]]; then
+    str_arg=
+    rest=("${args[@]:$((sep + 1)):${#args[@]}}")
+    args=("${args[@]:0:$sep}")
+  else
+    str_arg=$1
+    args=()
+    shift
+    rest=("$@")
+  fi
+
+  local cur selected trigger cmd post
+  post="$(caller 0 | awk '{print $2}')_post"
+  type -t "$post" > /dev/null 2>&1 || post=cat
+
+  cmd="${COMP_WORDS[0]//[^A-Za-z0-9_=]/_}"
+  trigger=${FZF_COMPLETION_TRIGGER-'**'}
+  cur="${COMP_WORDS[COMP_CWORD]}"
+  if [[ "$cur" == *"$trigger" ]]; then
+    cur=${cur:0:${#cur}-${#trigger}}
+
+    selected=$(FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_COMPLETION_OPTS $str_arg" __fzf_comprun "${rest[0]}" "${args[@]}" -q "$cur" | $post | tr '\n' ' ')
+    selected=${selected% } # Strip trailing space not to repeat "-o nospace"
+    if [[ -n "$selected" ]]; then
+      COMPREPLY=("$selected")
+    else
+      COMPREPLY=("$cur")
+    fi
+    printf '\e[5n'
+    return 0
+  else
+    _fzf_handle_dynamic_completion "$cmd" "${rest[@]}"
+  fi
+}
+
+_fzf_path_completion() {
+  __fzf_generic_path_completion _fzf_compgen_path "-m" "" "$@"
+}
+
+# Deprecated. No file only completion.
+_fzf_file_completion() {
+  _fzf_path_completion "$@"
+}
+
+_fzf_dir_completion() {
+  __fzf_generic_path_completion _fzf_compgen_dir "" "/" "$@"
+}
+
+_fzf_complete_kill() {
+  local trigger=${FZF_COMPLETION_TRIGGER-'**'}
+  local cur="${COMP_WORDS[COMP_CWORD]}"
+  if [[ -z "$cur" ]]; then
+    COMP_WORDS[$COMP_CWORD]=$trigger
+  elif [[ "$cur" != *"$trigger" ]]; then
+    return 1
+  fi
+
+  _fzf_proc_completion "$@"
+}
+
+_fzf_proc_completion() {
+  _fzf_complete -m --preview 'echo {}' --preview-window down:3:wrap --min-height 15 -- "$@" < <(
+    command ps -ef | sed 1d
+  )
+}
+
+_fzf_proc_completion_post() {
+  awk '{print $2}'
+}
+
+_fzf_host_completion() {
+  _fzf_complete +m -- "$@" < <(
+    command cat <(command tail -n +1 ~/.ssh/config ~/.ssh/config.d/* /etc/ssh/ssh_config 2> /dev/null | command grep -i '^\s*host\(name\)\? ' | awk '{for (i = 2; i <= NF; i++) print $1 " " $i}' | command grep -v '[*?]') \
+        <(command grep -oE '^[[a-z0-9.,:-]+' ~/.ssh/known_hosts | tr ',' '\n' | tr -d '[' | awk '{ print $1 " " $1 }') \
+        <(command grep -v '^\s*\(#\|$\)' /etc/hosts | command grep -Fv '0.0.0.0') |
+        awk '{if (length($2) > 0) {print $2}}' | sort -u
+  )
+}
+
+_fzf_var_completion() {
+  _fzf_complete -m -- "$@" < <(
+    declare -xp | sed 's/=.*//' | sed 's/.* //'
+  )
+}
+
+_fzf_alias_completion() {
+  _fzf_complete -m -- "$@" < <(
+    alias | sed 's/=.*//' | sed 's/.* //'
+  )
+}
+
+# fzf options
+complete -o default -F _fzf_opts_completion fzf
+
+d_cmds="${FZF_COMPLETION_DIR_COMMANDS:-cd pushd rmdir}"
+a_cmds="
+  awk cat diff diff3
+  emacs emacsclient ex file ftp g++ gcc gvim head hg java
+  javac ld less more mvim nvim patch perl python ruby
+  sed sftp sort source tail tee uniq vi view vim wc xdg-open
+  basename bunzip2 bzip2 chmod chown curl cp dirname du
+  find git grep gunzip gzip hg jar
+  ln ls mv open rm rsync scp
+  svn tar unzip zip"
+
+# Preserve existing completion
+__fzf_orig_completion < <(complete -p $d_cmds $a_cmds 2> /dev/null)
+
+if type _completion_loader > /dev/null 2>&1; then
+  _fzf_completion_loader=1
+fi
+
+__fzf_defc() {
+  local cmd func opts orig_var orig def
+  cmd="$1"
+  func="$2"
+  opts="$3"
+  orig_var="_fzf_orig_completion_${cmd//[^A-Za-z0-9_]/_}"
+  orig="${!orig_var}"
+  if [[ -n "$orig" ]]; then
+    printf -v def "$orig" "$func"
+    eval "$def"
+  else
+    complete -F "$func" $opts "$cmd"
+  fi
+}
+
+# Anything
+for cmd in $a_cmds; do
+  __fzf_defc "$cmd" _fzf_path_completion "-o default -o bashdefault"
+done
+
+# Directory
+for cmd in $d_cmds; do
+  __fzf_defc "$cmd" _fzf_dir_completion "-o nospace -o dirnames"
+done
+
+# Kill completion (supports empty completion trigger)
+complete -F _fzf_complete_kill -o default -o bashdefault kill
+
+unset cmd d_cmds a_cmds
+
+_fzf_setup_completion() {
+  local kind fn cmd
+  kind=$1
+  fn=_fzf_${1}_completion
+  if [[ $# -lt 2 ]] || ! type -t "$fn" > /dev/null; then
+    echo "usage: ${FUNCNAME[0]} path|dir|var|alias|host|proc COMMANDS..."
+    return 1
+  fi
+  shift
+  __fzf_orig_completion < <(complete -p "$@" 2> /dev/null)
+  for cmd in "$@"; do
+    case "$kind" in
+      dir)   __fzf_defc "$cmd" "$fn" "-o nospace -o dirnames" ;;
+      var)   __fzf_defc "$cmd" "$fn" "-o default -o nospace -v" ;;
+      alias) __fzf_defc "$cmd" "$fn" "-a" ;;
+      *)     __fzf_defc "$cmd" "$fn" "-o default -o bashdefault" ;;
+    esac
+  done
+}
+
+# Environment variables / Aliases / Hosts
+_fzf_setup_completion 'var'   export unset
+_fzf_setup_completion 'alias' unalias
+_fzf_setup_completion 'host'  ssh telnet
+
+fi
diff --git a/.config/fzf/key-bindings.bash b/.config/fzf/key-bindings.bash
new file mode 100644
index 0000000..d2da0be
--- /dev/null
+++ b/.config/fzf/key-bindings.bash
@@ -0,0 +1,95 @@
+#     ____      ____
+#    / __/___  / __/
+#   / /_/_  / / /_
+#  / __/ / /_/ __/
+# /_/   /___/_/ key-bindings.bash
+#
+# - $FZF_TMUX_OPTS
+# - $FZF_CTRL_T_COMMAND
+# - $FZF_CTRL_T_OPTS
+# - $FZF_CTRL_R_OPTS
+# - $FZF_ALT_C_COMMAND
+# - $FZF_ALT_C_OPTS
+
+# Key bindings
+# ------------
+__fzf_select__() {
+  local cmd="${FZF_CTRL_T_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/\\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
+    -o -type f -print \
+    -o -type d -print \
+    -o -type l -print 2> /dev/null | cut -b3-"}"
+  eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_CTRL_T_OPTS" $(__fzfcmd) -m "$@" | while read -r item; do
+    printf '%q ' "$item"
+  done
+  echo
+}
+
+if [[ $- =~ i ]]; then
+
+__fzfcmd() {
+  [[ -n "$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 + ${#selected} ))
+}
+
+__fzf_cd__() {
+  local cmd dir
+  cmd="${FZF_ALT_C_COMMAND:-"command find -L . -mindepth 1 \\( -path '*/\\.*' -o -fstype 'sysfs' -o -fstype 'devfs' -o -fstype 'devtmpfs' -o -fstype 'proc' \\) -prune \
+    -o -type d -print 2> /dev/null | cut -b3-"}"
+  dir=$(eval "$cmd" | FZF_DEFAULT_OPTS="--height ${FZF_TMUX_HEIGHT:-40%} --reverse --bind=ctrl-z:ignore $FZF_DEFAULT_OPTS $FZF_ALT_C_OPTS" $(__fzfcmd) +m) && printf 'cd -- %q' "$dir"
+}
+
+__fzf_history__() {
+  local output
+  output=$(
+      cat $HISTFILEPERSIST |
+      FZF_DEFAULT_OPTS="--reverse --height ${FZF_TMUX_HEIGHT:-40%} $FZF_DEFAULT_OPTS -n2..,.. --tiebreak=index --bind=ctrl-r:toggle-sort,ctrl-z:ignore $FZF_CTRL_R_OPTS +m --prompt '* ~ > '" $(__fzfcmd) --query "$READLINE_LINE"
+  ) || return
+  READLINE_LINE=${output#*$'\t'}
+  if [[ -z "$READLINE_POINT" ]]; then
+    echo "$READLINE_LINE"
+  else
+    READLINE_POINT=0x7fffffff
+  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
+  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"'
+
+  # 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"$(__fzf_history__)"\e\C-e\er"'
+  bind -m vi-command '"\C-r": "\C-z\C-r\C-z"'
+  bind -m vi-insert '"\C-r": "\C-z\C-r\C-z"'
+else
+  # CTRL-T - Paste the selected file path into the command line
+  bind -m emacs-standard -x '"\C-t": fzf-file-widget'
+  bind -m vi-command -x '"\C-t": fzf-file-widget'
+  bind -m vi-insert -x '"\C-t": fzf-file-widget'
+
+  # CTRL-R - Paste the selected command from history into the command line
+  bind -m emacs-standard -x '"\C-r": __fzf_history__'
+  bind -m vi-command -x '"\C-r": __fzf_history__'
+  bind -m vi-insert -x '"\C-r": __fzf_history__'
+fi
+
+# ALT-C - cd into the selected directory
+bind -m emacs-standard '"\ec": " \C-b\C-k \C-u`__fzf_cd__`\e\C-e\er\C-m\C-y\C-h\e \C-y\ey\C-x\C-x\C-d"'
+bind -m vi-command '"\ec": "\C-z\ec\C-z"'
+bind -m vi-insert '"\ec": "\C-z\ec\C-z"'
+
+fi
diff --git a/.local/bin/bashhistory b/.local/bin/bashhistory
new file mode 100755
index 0000000..6320834
--- /dev/null
+++ b/.local/bin/bashhistory
@@ -0,0 +1,31 @@
+#!/bin/sh -eu
+
+directory="$XDG_DATA_HOME/bash"
+persist="$directory/history"
+default="$HOME/.bash_history"
+current="$HISTFILE"
+
+_prune() {
+ sed --in-place '/^#/d' "$1" &&            # Remove all timestamps.
+ sed --in-place '/......../!d' "$1" &&     # Remove all commands 8 characters or less.
+ sort --unique "$1" | sponge "$1"          # Remove all duplicate entries.
+}
+
+mkdir --parents "$directory"
+touch "$current"
+
+_migrate() {
+ [ -f "$default" ] &&
+  cat "$default" >>"$persist" &&
+  _prune "$persist" &&
+  rm "$default"
+}
+
+_store() {
+ cat "$current" >> "$persist" &&
+ _prune "$persist" &&
+ true > "$current"
+}
+
+_migrate || true
+_store