From 809d465de5da8c29508b6839127f0098e821fc97 Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Fri, 2 May 2014 12:52:06 +0900
Subject: [PATCH] Tip on using git ls-tree (#31)

---
 README.md | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/README.md b/README.md
index e47b26f..03a2c49 100644
--- a/README.md
+++ b/README.md
@@ -458,6 +458,26 @@ export FZF_DEFAULT_COMMAND='ag -l -g ""'
 fzf
 ```
 
+### `git ls-tree` for fast traversal
+
+If you're running fzf in a large git repository, `git ls-tree` can boost up the
+speed of the traversal.
+
+```sh
+# Copy the original fzf function to __fzf
+declare -f __fzf > /dev/null ||
+  eval "$(echo "__fzf() {"; declare -f fzf | grep -v '^{' | tail -n +2)"
+
+# Use git ls-tree when possible
+fzf() {
+  if [ -n "$(git rev-parse HEAD 2> /dev/null)" ]; then
+    FZF_DEFAULT_COMMAND="git ls-tree -r --name-only HEAD" __fzf "$@"
+  else
+    __fzf "$@"
+  fi
+}
+```
+
 ### Fish shell
 
 It's [a known bug of fish](https://github.com/fish-shell/fish-shell/issues/1362)