Zoekt, en gij zult spinazie eten

Search examples:

needle: search for "needle"
thread or needle: search for either "thread" or "needle"
class needle: search for files containing both "class" and "needle"
class Needle: search for files containing both "class" (case insensitive) and "Needle" (case sensitive)
class Needle case:yes: search for files containing "class" and "Needle", both case sensitively
"class Needle": search for files with the phrase "class Needle"
needle -hay: search for files with the word "needle" but not the word "hay"
path file:java: search for the word "path" in files whose name contains "java"
needle lang:python: search for "needle" in Python source code
f:\.c$: search for files whose name ends with ".c"
path -file:java: search for the word "path" excluding files whose name contains "java"
foo.*bar: search for the regular expression "foo.*bar"
-(Path File) Stream: search "Stream", but exclude files containing both "Path" and "File"
-Path\ file Stream: search "Stream", but exclude files containing "Path File"
sym:data: search for symbol definitions containing "data"
phone r:droid: search for "phone" in repositories whose name contains "droid"
phone archived:no: search for "phone" in repositories that are not archived
phone fork:no: search for "phone" in repositories that are not forks
phone public:no: search for "phone" in repositories that are not public
phone b:master: for Git repos, find "phone" in files in branches whose name contains "master".
phone b:HEAD: for Git repos, find "phone" in the default ('HEAD') branch.

To list repositories, try:

r:droid: list repositories whose name contains "droid".
r:go -r:google: list repositories whose name contains "go" but not "google".