Google Code Search

Search public source code.

Syntax and Examples (more about regexp syntax)
regexp	Search for a regular expression go{2}gle hello,\ world ^int printk
"exact string"	Search for exact string "compiler happy"
file:regexp	Search only in files or directories matching regexp file:\.js$ XMLHttpRequest file:include/ ioctl file:/usr/sys/ken/slp.c "You are not expected to understand this."
package:regexp	Search packages with names matching regexp. (A package's name is its URL or CVS server information.) package:perl.*\.tar\.gz Frodo package:linux-2.6 int\ printk
lang:regexp	Search only for programs written in languages matching regexp lang:lisp xml lang:"c++" sprintf.*%s
license:regexp	Search only for files with licenses matching regexp. license:bsd int\ printf -license:gpl heapsort