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author | tv <tv@krebsco.de> | 2019-02-05 11:00:10 +0100 |
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committer | tv <tv@krebsco.de> | 2019-02-05 11:00:10 +0100 |
commit | e95c91edb81f1043247817f733de91ad751efaf9 (patch) | |
tree | 8038659077c1abb42de0317a25f53436a1861e45 /tv/5pkgs/simple/bash-fzf-history.nix | |
parent | ba6aa9a871850e1d613a2a510f45d3249aee4405 (diff) |
tv bash-fzf-history: init
Diffstat (limited to 'tv/5pkgs/simple/bash-fzf-history.nix')
-rw-r--r-- | tv/5pkgs/simple/bash-fzf-history.nix | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/tv/5pkgs/simple/bash-fzf-history.nix b/tv/5pkgs/simple/bash-fzf-history.nix new file mode 100644 index 0000000..e9a21b9 --- /dev/null +++ b/tv/5pkgs/simple/bash-fzf-history.nix @@ -0,0 +1,91 @@ +with import <stockholm/lib>; +{ pkgs + +, edit-key ? "ctrl-e" +, exec-key ? "enter" +, edit-mark ? "${mark-prefix}${edit-key}" +, exec-mark ? "${mark-prefix}${exec-key}" +, edit-command ? "\"\"" +, exec-command ? "accept-line" +, mark-prefix ? " #FZFKEY:" +, finish-keyseq ? "\\C-x\\C-p" +, rebind-keyseq ? "\\C-x\\C-o" + +, start-keyseq ? "\\C-f" +, load-keyseq ? start-keyseq +}: let + script = pkgs.writeBash "bash-fzf-history.sh" '' + if ! command -v fzf >/dev/null; then + # Alternatively rewrite ${pkgs.fzf}/share/fzf/* to use absolute paths. + fzf() { + ${pkgs.fzf}/bin/fzf "$@" + } + fi + + . ${pkgs.fzf}/share/fzf/key-bindings.bash + . ${pkgs.fzf}/share/fzf/completion.bash + + FZF_DEFAULT_OPTS='${toString [ + /* sh */ "--height=40%" + /* sh */ "--inline-info" + /* sh */ "--min-height=4" + /* sh */ "--reverse" + ]}' + + __fzf_history__() ( + result=$( + HISTTIMEFORMAT= history | + FZF_DEFAULT_OPTS="${toString [ + /* sh */ "--tac" + /* sh */ "--sync" + /* sh */ "-n2..,.." + /* sh */ "--tiebreak=index" + /* sh */ "--bind=ctrl-r:toggle-sort" + /* sh */ "--expect=${edit-key},${exec-key}" + /* sh */ "$FZF_DEFAULT_OPTS" + /* sh */ "+m" + ]}" \ + ${pkgs.fzf}/bin/fzf + ) + if test -n "$result"; then + shopt -s extglob + + key=''${result%%$'\n'*} + line=''${result##*([^0-9])} + index=''${line%%[^0-9]*} + command=''${line##*([0-9 ])} + + echo "$command${mark-prefix}$key" + else + # Ensure no empty new line gets produced when fzf was aborted. + echo '${edit-mark}' + fi + ) + + __fzf_rebind_finish_keyseq__() { + local suffix= + case $READLINE_LINE in + *'${edit-mark}') + suffix='${edit-mark}' + bind '"${finish-keyseq}": ${edit-command}' + ;; + *'${exec-mark}') + suffix='${exec-mark}' + bind '"${finish-keyseq}": ${exec-command}' + ;; + esac + READLINE_LINE=${"\${READLINE_LINE:0:-\${#suffix}}"} + } + bind -x '"${rebind-keyseq}": __fzf_rebind_finish_keyseq__' + + bind '"\C-r": reverse-search-history' + bind '"${start-keyseq}": " \C-e\C-u\C-y\ey\C-u`__fzf_history__`\e\C-e\er\e^${rebind-keyseq}${finish-keyseq}"' + + echo '# fzf key bindings loaded:' >&2 + bind -s | ${pkgs.gnugrep}/bin/grep __fzf_ >&2 + ''; +in + script // + rec { + bind = /* sh */ ''bind -x '"${load-keyseq}": . ${script}' ''; + } |