Add bash autocompletion

Author: yankeexe

README.md

@@ -18,6 +18,21 @@ Copy the executable to any directory in your `$PATH`
 $ sudo cp wt /usr/local/bin
 ```
 
+### Tab Completion
+:warning: Only **bash** completion is available for now.
+
+```bash
+sudo cp wt_completion.bash /etc/bash_completion.d
+```
+
+```bash
+wt <TAB> <TAB>
+
+# OR
+
+wt <completion-characters> <TAB>
+```
+
 ## Usage
 Switch between worktrees.
 You can do a text search to change to the worktree directory.
@@ -48,4 +63,4 @@ Update to the latest release
 
 ```bash
 $ wt update
-```
+```

wt_completion

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+_wt() {
+    local cur opts
+    COMPREPLY=()
+    cur="${COMP_WORDS[COMP_CWORD]}"
+    list="$(wt list | awk '{ print $1; }' | tr "\n" " ")"
+    opts=""
+
+    for item in $list
+    do
+        opts+="$(basename "$item") "
+    done
+
+    if [[ ${cur} == -* || ${COMP_CWORD} -eq 1 ]] ; then
+        local cur=${COMP_WORDS[COMP_CWORD]}
+        COMPREPLY=( $(compgen -W "${opts}" -- "$cur") )
+    fi
+}
+
+complete -F _wt wt