cgrep won't search all indexed files

[Nick Moffitt]

The cgrep man page says:

    CGREP(1) General Commands Manual CGREP(1)

    NAME
           cgrep - like grep(1) over all indexed files

    SYNOPSIS
           cgrep [-c] [-h] [-i] [-l] [-n] regexp [ file... ]

    DESCRIPTION
           Cgrep behaves like grep, searching for regexp, an RE2 (nearly PCRE)
           regular expression.

Unfortunately, it seems to do no such thing:

    ~$ cindex corpus/
    ~$ csearch wibble
    /home/nick/corpus/identica.log:18:23 <evan> @brydon You can a) turn off the privacy flag or b) ignore the public stream or c) @zach can talk to @twibble for you. Need more deetz.
    ~$ cgrep wibble
[Time passes...]
    ~$ cgrep wibble /home/nick/corpus/identica.log
    /home/nick/corpus/identica.log:18:23 <evan> @brydon You can a) turn off the privacy flag or b) ignore the public stream or c) @zach can talk to @twibble for you. Need more deetz.

It seems that the files are not optional, which is baffling given csearch's
default-everything behaviour and the documented behaviour in the first two
substantive lines of the man page.

Otherwise, cindex/csearch are faboo!

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: codesearch 0.0~hg20120502-1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
Date: Wed Oct 23 22:23:31 2013
Dependencies:

EcryptfsInUse: Yes
MarkForUpload: True
SourcePackage: codesearch
UpgradeStatus: Upgraded to saucy on 2013-09-17 (36 days ago)