From 5ca22a2e982011d1d33ac40f81b5ee6f78836dad Mon Sep 17 00:00:00 2001
From: Ben Sima <ben@bsima.me>
Date: Sat, 12 Dec 2020 13:08:49 -0500
Subject: fzf aliases, functions, bindings

---
 lib/common.nix | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 72 insertions(+), 2 deletions(-)

diff --git a/lib/common.nix b/lib/common.nix
index 0800e52..0975cfd 100644
--- a/lib/common.nix
+++ b/lib/common.nix
@@ -19,6 +19,12 @@ in
       LEDGER_FILE = "${homedir}/.hledger.journal";
       XTERM_LOCALE = locale;
       PYTHONSTARTUP = "${homedir}/.pythonrc";
+
+      FD_OPTIONS = "--follow --exclude .git";
+      BAT_PAGER = "less -R";
+      FZF_DEFAULT_COMMAND = "git ls-files --cached --others --exclude-standard | fd --type f --type l $FD_OPTIONS";
+      FZF_CTRL_T_COMMAND = "fd $FD_OPTIONS";
+      FZF_ALT_C_COMMAND = "fd --type d $FD_OPTIONS";
     };
 
     # From the command line:
@@ -193,6 +199,63 @@ in
         }
         # my prompt, after much chagrin
         export PS1="\n\[\e[34m\][\u@\h:\w]\[\e[m\] \$(date +%Y.%m.%d..%H.%M) \$(if [ \$? == 0 ]; then true; else echo \(\$?\); fi) \n$ "
+
+
+        # https://gist.github.com/junegunn/8b572b8d4b5eddd8b85e5f4d40f17236
+        is_in_git_repo() {
+          git rev-parse HEAD > /dev/null 2>&1
+        }
+
+        fzf-down() {
+          fzf --height 50% "$@" --border
+        }
+
+        _gf() {
+          is_in_git_repo || return
+          git -c color.status=always status --short |
+          fzf-down -m --ansi --nth 2..,.. \
+            --preview '(git diff --color=always -- {-1} | sed 1,4d; cat {-1}) | head -500' |
+          cut -c4- | sed 's/.* -> //'
+        }
+
+        _gb() {
+          is_in_git_repo || return
+          git branch -a --color=always | grep -v '/HEAD\s' | sort |
+          fzf-down --ansi --multi --tac --preview-window right:70% \
+            --preview 'git log --oneline --graph --date=short --color=always --pretty="format:%C(auto)%cd %h%d %s" $(sed s/^..// <<< {} | cut -d" " -f1) | head -'$LINES |
+          sed 's/^..//' | cut -d' ' -f1 |
+          sed 's#^remotes/##'
+        }
+
+        _gt() {
+          is_in_git_repo || return
+          git tag --sort -version:refname |
+          fzf-down --multi --preview-window right:70% \
+            --preview 'git show --color=always {} | head -'$LINES
+        }
+
+        _gh() {
+          is_in_git_repo || return
+          git log --date=short --format="%C(green)%C(bold)%cd %C(auto)%h%d %s (%an)" --graph --color=always |
+          fzf-down --ansi --no-sort --reverse --multi --bind 'ctrl-s:toggle-sort' \
+            --header 'Press CTRL-S to toggle sort' \
+            --preview 'grep -o "[a-f0-9]\{7,\}" <<< {} | xargs git show --color=always | head -'$LINES |
+          grep -o "[a-f0-9]\{7,\}"
+        }
+
+        _gr() {
+          is_in_git_repo || return
+          git remote -v | awk '{print $1 "\t" $2}' | uniq |
+          fzf-down --tac \
+            --preview 'git log --oneline --graph --date=short --pretty="format:%C(auto)%cd %h%d %s" {1} | head -200' |
+          cut -d$'\t' -f1
+        }
+        bind '"\er": redraw-current-line'
+        bind '"\C-g\C-f": "$(_gf)\e\C-e\er"'
+        bind '"\C-g\C-b": "$(_gb)\e\C-e\er"'
+        bind '"\C-g\C-t": "$(_gt)\e\C-e\er"'
+        bind '"\C-g\C-h": "$(_gh)\e\C-e\er"'
+        bind '"\C-g\C-r": "$(_gr)\e\C-e\er"'
       '';
       shellAliases = {
         add = "git add --ignore-removal";
@@ -216,13 +279,20 @@ in
         hs = "home-manager switch";
         ll = "ls -lah";
         rm = "rm -i";
+        s = ''
+          INITIAL_QUERY="" && \
+          RG_PREFIX="rg --column --line-number --no-heading --color=always --smart-case " && \
+          FZF_DEFAULT_COMMAND="$RG_PREFIX '$INITIAL_QUERY'" && \
+          fzf --bind "change:reload:$RG_PREFIX {q} || true" \
+            --ansi --phony --query "$INITIAL_QUERY" \
+            --height=50% --layout=reverse
+        '';
         showpath = "echo $PATH | sed 's/:/\n/g'";
         tdate = "date +%Y.%m.%d..%H.%M";
         ttime = "date +%H.%M";
         typeless = "history | tail -n 20000 | sed 's/.*  //' | sort | uniq -c | sort -g | tail -n 100";
+        v = "vim $(fzf)";
         "v." = "vim .";
-        vk = "vim $(sk -m)";
-        vs = "vim $(sk -m)";
       };
     };
 
-- 
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