[zsh] add history search with fzf

zsh/palette.zsh

@@ -43,7 +43,7 @@ _palette_widget() {
   # try to fill in a placeholder if there're any, otherwise pick a snippet
   if ! _palette_fill_in_placeholder; then
     local selected
-    if selected="$(_palette_parse_tldr_pages | fzf --ansi --cycle --height 50% --reverse)"
+    if selected="$(_palette_parse_tldr_pages | fzf --height 40% --reverse --ansi)"
     then
       # paste selected snippet without its description
       zle -U "${selected%%$PALETTE_SNIPPET_COMMENT*}"

zsh/zle.zsh

@@ -0,0 +1,22 @@
+#!/usr/bin/env zsh
+
+if command_exists fzf; then
+  # taken from https://github.com/junegunn/fzf/blob/master/shell/key-bindings.zsh
+  fzf-history-widget() {
+    setopt localoptions pipefail
+    local selected
+    selected=(
+      $(fc -rl 1 |
+        fzf --height=40% --reverse --nth=2.. --tiebreak=index --query="$LBUFFER")
+    )
+    local fzf_ret="$?"
+    if (( ${#selected} )); then
+      zle vi-fetch-history -n "${selected[1]}"
+    fi
+    zle reset-prompt
+    return "$fzf_ret"
+  }
+
+  zle     -N    fzf-history-widget
+  bindkey '^[r' fzf-history-widget
+fi

zsh/zshrc

@@ -2,7 +2,7 @@
 
 ZSH_DOTFILES="${0:h}"
 
-for script in functions path env plugins aliases palette prompt; do
+for script in functions path env plugins aliases zle palette prompt; do
   source "$ZSH_DOTFILES/$script.zsh"
   source_if_exists "$ZSH_DOTFILES/custom/$script.zsh"
 done