103 lines
2.9 KiB
Nix
103 lines
2.9 KiB
Nix
with import <stockholm/lib>;
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{ pkgs
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, edit-key ? "ctrl-e"
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, exec-key ? "enter"
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, edit-mark ? "${mark-prefix}${edit-key}"
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, exec-mark ? "${mark-prefix}${exec-key}"
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, edit-command ? "\"\""
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, exec-command ? "accept-line"
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, mark-prefix ? " #FZFKEY:"
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, finish-keyseq ? "\\C-x\\C-p"
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, rebind-keyseq ? "\\C-x\\C-o"
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, start-keyseq ? "\\C-f"
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, load-keyseq ? start-keyseq
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}: let
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script = pkgs.writeBash "bash-fzf-history.sh" ''
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if ! command -v fzf >/dev/null; then
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# Alternatively rewrite ${pkgs.fzf}/share/fzf/* to use absolute paths.
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fzf() {
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${pkgs.fzf}/bin/fzf "$@"
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}
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fi
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. ${pkgs.fzf}/share/fzf/key-bindings.bash
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. ${pkgs.fzf}/share/fzf/completion.bash
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FZF_DEFAULT_OPTS='${toString [
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/* sh */ "--height=40%"
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/* sh */ "--inline-info"
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/* sh */ "--min-height=4"
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/* sh */ "--reverse"
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]}'
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__fzf_history__() (
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IFS=$'\n'
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result=( $(
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# To add "unknown timestamps" to each line of the history:
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# sed -i '/^#[0-9]/{n;b};s/^/#1\n/' "$HISTFILE"
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HISTTIMEFORMAT=$'\e[38;5;244m%Y-%m-%dT%H:%M:%S\e[m ' history |
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${pkgs.gnused}/bin/sed '
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s/\(\x1b\[[0-9;]*\)244m1970-[0-9T:-]*/\1237m????-??-??T??:??:??/
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' |
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FZF_DEFAULT_OPTS="${toString [
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/* sh */ "--ansi"
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/* sh */ "--tac"
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/* sh */ "--sync"
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/* sh */ "-n2..,.."
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/* sh */ "--tiebreak=index"
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/* sh */ "--bind=ctrl-r:toggle-sort"
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/* sh */ "--expect=${edit-key},${exec-key}"
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/* sh */ "$FZF_DEFAULT_OPTS"
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/* sh */ "+m"
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]}" \
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${pkgs.fzf}/bin/fzf |
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${pkgs.gnused}/bin/sed '
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/^ *[0-9]/{
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s/^ *//
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s/ \+/\n/;# index
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s/ \+/\n/;# date
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}
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'
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) )
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if test -n "$result"; then
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key=''${result[0]}
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index=''${result[1]}
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date=''${result[2]}
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command=''${result[3]}
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echo "$command${mark-prefix}$key"
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else
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# Ensure no empty new line gets produced when fzf was aborted.
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echo '${edit-mark}'
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fi
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)
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__fzf_rebind_finish_keyseq__() {
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local suffix=
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case $READLINE_LINE in
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*'${edit-mark}')
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suffix='${edit-mark}'
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bind '"${finish-keyseq}": ${edit-command}'
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;;
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*'${exec-mark}')
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suffix='${exec-mark}'
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bind '"${finish-keyseq}": ${exec-command}'
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;;
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esac
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READLINE_LINE=${"\${READLINE_LINE:0:-\${#suffix}}"}
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}
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bind -x '"${rebind-keyseq}": __fzf_rebind_finish_keyseq__'
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bind '"\C-r": reverse-search-history'
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bind '"${start-keyseq}": " \C-e\C-u\C-y\ey\C-u`__fzf_history__`\e\C-e\er\e^${rebind-keyseq}${finish-keyseq}"'
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echo '# fzf key bindings loaded:' >&2
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bind -s | ${pkgs.gnugrep}/bin/grep __fzf_ >&2
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'';
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in
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script.overrideAttrs (old: rec {
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bind = /* sh */ ''bind -x '"${load-keyseq}": . ${script}' '';
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})
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