Adding tab-completion function for zsh.

misc/zsh-completion

@@ -0,0 +1,21 @@
+# Copyright 2011 Google Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Add the following to your .zshrc to tab-complete ninja targets
+#   . path/to/ninja/misc/zsh-completion
+
+_ninja() {
+  reply=(`(ninja -t targets all 2&>/dev/null) | awk -F: '{print $1}'`)
+}
+compctl -K _ninja ninja