Bash completion script for the brew command

Library/Contributions/brew_bash_completion.sh

@@ -0,0 +1,35 @@
+_brew_to_completion()
+{
+    local actions cur prev
+    local cellar_contents formulae which_cellar brew_base
+
+    COMPREPLY=()
+    cur="${COMP_WORDS[COMP_CWORD]}"
+    prev="${COMP_WORDS[COMP_CWORD-1]}"
+    
+    actions="install rm list info ln edit"
+    
+    # Command list
+    if [[ ( ${COMP_CWORD} -eq 1 ) && ( ${COMP_WORDS[0]} == brew )  ]] ; then
+        COMPREPLY=( $(compgen -W "${actions}" -- ${cur}) )
+        return 0
+    # Handle subcommands
+    else
+        brew_base=`which brew`
+        brew_base=`dirname ${brew_base}`/..
+        
+        # Commands that take an existing brew...
+        if [[ ($prev == "list") || ($prev == "ln") || ($prev == "rm") ]] ; then
+            cellar_contents=`ls ${brew_base}/Cellar/`
+            COMPREPLY=( $(compgen -W "${cellar_contents}" -- ${cur}) )
+            return 0
+        # Commands that take a formula...
+        elif [[ ($prev == "install") ]] ; then
+            formulae=`ls ${brew_base}/Library/Formula/ | sed "s/\.rb//g"`
+            COMPREPLY=( $(compgen -W "${formulae}" -- ${cur}) )
+            return 0
+        fi
+    fi
+}
+
+complete -F _brew_to_completion brew