bash completion rules

tools/bash-completion

Index: tools/bash-completion
diff --git a/tools/bash-completion b/tools/bash-completion
new file mode 100644
index 0000000000000000000000000000000000000000..229582c1f64332df80ab0345a7e80e9f4da81a3f
--- /dev/null
+++ b/tools/bash-completion
@@ -0,0 +1,21 @@
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Flag completion rule for bash.
+# To load in your shell, "source path/to/this/file".
+
+chrome_source=$(readlink -f $(dirname $BASH_SOURCE)/..)
+
+_chrome_flag() {
+    local cur targets
+    cur="${COMP_WORDS[COMP_CWORD]}"
+    targets=$(cd $chrome_source; \
+        git ls-files | grep switches | \
+        xargs sed -ne 's/^[^/]*"\([^" /]\+\)".*/--\1/p')
+    COMPREPLY=($(compgen -W "$targets" -- "$cur"))
+    return 0
+}
+
+complete -F _chrome_flag google-chrome
+complete -F _chrome_flag chrome