Xcode and Mercurial .hgignore

For future reference, culled from Peter Hosey and Ben Clark-Robinson, a mostly useful .hgignore definition for use with an Xcode project stored in the Mercurial version control system.

syntax: glob
*.pyc
.DS_Store
._*
*.xcodeproj/*.pbxuser
*.xcodeproj/*.perspective*
*.xcodeproj/*.mode*

syntax: regexp
^build/

Ugh to .DS_Store files and gaaaaaah to resource forks wedged into dot-underscore files. Yay! to regular expressions.