From f660ad35b2a28fd21778ba0a80e880e27ab32a9b Mon Sep 17 00:00:00 2001
From: Junegunn Choi <junegunn.c@gmail.com>
Date: Sat, 23 Nov 2013 20:09:56 +0900
Subject: [PATCH] Improve bash completion: `[DIRECTORY/][FUZZY_PATTERN]**<TAB>`

---
 README.md           | 28 +++++++++++++++++-----------
 fzf-completion.bash | 36 +++++++++++++++++++++---------------
 2 files changed, 38 insertions(+), 26 deletions(-)

diff --git a/README.md b/README.md
index 35c8fd9..7cbed42 100644
--- a/README.md
+++ b/README.md
@@ -73,12 +73,13 @@ Usage
 ```
 usage: fzf [options]
 
-  -m, --multi      Enable multi-select
-  -x, --extended   Extended-search mode
-  -s, --sort=MAX   Maximum number of matched items to sort. Default: 1000
-  +s, --no-sort    Do not sort the result. Keep the sequence unchanged.
-  +i               Case-sensitive match
-  +c, --no-color   Disable colors
+    -m, --multi      Enable multi-select
+    -x, --extended   Extended-search mode
+    -q, --query=STR  Initial query
+    -s, --sort=MAX   Maximum number of matched items to sort. Default: 1000
+    +s, --no-sort    Do not sort the result. Keep the sequence unchanged.
+    +i               Case-sensitive match
+    +c, --no-color   Disable colors
 ```
 
 fzf will launch curses-based finder, read the list from STDIN, and write the
@@ -266,8 +267,10 @@ over time*
 
 ### bash
 
-fuzzy-finder-completion can be triggered if you type in a directory name
-followed by the trigger sequence which is by default `**`.
+Fuzzy completion can be triggered if the word before the cursor ends
+with the trigger sequence which is by default `**`.
+
+- `COMMAND [DIRECTORY/][FUZZY_PATTERN]**<TAB>`
 
 #### Examples
 
@@ -277,7 +280,10 @@ followed by the trigger sequence which is by default `**`.
 vim **<TAB>
 
 # Files under parent directory
-vim ..**<TAB>
+vim ../**<TAB>
+
+# Files under parent directory that match `fzf`
+vim ../fzf**<TAB>
 
 # Files under your home directory
 vim ~/**<TAB>
@@ -286,8 +292,8 @@ vim ~/**<TAB>
 # Directories under current directory (single-selection)
 cd **<TAB>
 
-# Directories under parent directory
-cd ../**<TAB>
+# Directories under ~/github that match `fzf`
+cd ~/github/fzf**<TAB>
 ```
 
 #### Settings
diff --git a/fzf-completion.bash b/fzf-completion.bash
index e52a8f9..bdb8568 100644
--- a/fzf-completion.bash
+++ b/fzf-completion.bash
@@ -31,31 +31,37 @@ _fzf_opts_completion() {
 }
 
 _fzf_generic_completion() {
-  local cur prev opts base matches
+  local cur prev opts base dir leftover matches
   COMPREPLY=()
   FZF_COMPLETION_TRIGGER=${FZF_COMPLETION_TRIGGER:-**}
   cur="${COMP_WORDS[COMP_CWORD]}"
   prev="${COMP_WORDS[COMP_CWORD-1]}"
   if [[ ${cur} == *"$FZF_COMPLETION_TRIGGER" ]]; then
     base=${cur:0:${#cur}-${#FZF_COMPLETION_TRIGGER}}
-    base=${base%/}
     eval base=$base
 
-    find_opts="-name .git -prune -o -name .svn -prune -o"
-    if [ -z "$base" -o -d "$base" ]; then
-      matches=$(find ${base:-*} $1 2> /dev/null | fzf $FZF_COMPLETION_OPTS $2 | while read item; do
-        if [[ ${item} =~ \  ]]; then
-          echo -n "\"$item\" "
-        else
-          echo -n "$item "
+    dir="$base"
+    while [ 1 ]; do
+      if [ -z "$dir" -o -d "$dir" ]; then
+        leftover=${base/#"$dir"}
+        leftover=${leftover/#\/}
+        [ "$dir" = '.' ] && dir=''
+        matches=$(find "$dir"* $1 2> /dev/null | fzf $FZF_COMPLETION_OPTS $2 -q "$leftover" | while read item; do
+          if [[ ${item} =~ \  ]]; then
+            echo -n "\"$item\" "
+          else
+            echo -n "$item "
+          fi
+        done)
+        matches=${matches% }
+        if [ -n "$matches" ]; then
+          COMPREPLY=( "$matches" )
+          return 0
         fi
-      done)
-      matches=${matches% }
-      if [ -n "$matches" ]; then
-        COMPREPLY=( "$matches" )
-        return 0
+        return 1
       fi
-    fi
+      dir=$(dirname "$dir")
+    done
   fi
 }