{file} ...
			Like above, but instead of enclosing the pattern in a
			non-ID character use a white space separated pattern.
			The pattern must start with an ID character.
			Example: >
				:vimgrep Error *.c
<
							*:lv* *:lvimgrep*
:lv[imgrep][!] /{pattern}/[g][j][f] {file} ...
:lv[imgrep][!] {pattern} {file} ...
			Same as ":vimgrep", except the location list for the
			current window is used instead of the quickfix list.

						*:vimgrepa* *:vimgrepadd*
:vimgrepa[dd][!] /{pattern}/[g][j][f] {file} ...
:vimgrepa[dd][!] {pattern} {file} ...
			Just like ":vimgrep", but instead of making a new list
			of errors the matches are appended to the current
			list.

						*:lvimgrepa* *:lvimgrepadd*
:lvimgrepa[dd][!] /{pattern}/[g][j][f] {file} ...
:lvimgrepa[dd][!] {pattern} {file} ...
			Same as ":vimgrepadd", except the location list for
			the current window is used instead of the quickfix
			list.

5.2 External grep

Vim can interface with "grep" and grep-like programs (such as the GNU
id-utils) in a similar way to its compiler integration (see |:make| above).

[Unix trivia: The name for the Unix "grep" command comes from ":g/re/p", where
"re" stands for Regular Expression.]

							    *:gr* *:grep*
:gr[ep][!] [arguments]	Just like ":make", but use 'grepprg' instead of
			'makeprg' and 'grepformat' instead of 'errorformat'.
			When 'grepprg' is "internal" this works like
			|:vimgrep|.  Note that the pattern needs to be
			enclosed in separator characters then.
			If the encoding of the program output differs from the
			'encoding' option, you can use the 'makeencoding'
			option to specify the encoding.

							    *:lgr* *:lgrep*
:lgr[ep][!] [arguments]	Same as ":grep", except the location list for the
			current window is used instead of the quickfix list.

							*:grepa* *:grepadd*
:grepa[dd][!] [arguments]
			Just like ":grep", but instead of making a new list of
			errors the matches are appended to the current list.
			Example: >
				:call setqflist([])
				:bufdo grepadd! something %
<			The first command makes a new error list which is
			empty.  The second command executes "grepadd" for each
			listed buffer.  Note the use of ! to avoid that
			":grepadd" jumps to the first error, which is not
			allowed with |:bufdo|.
			An example that uses the argument list and avoids
			errors for files without matches: >
				:silent argdo try
				  \ | grepadd! something %
				  \ | catch /E480:/
				  \ | endtry"
<
			If the encoding of the program output differs from the
			'encoding' option, you can use the 'makeencoding'
			option to specify the encoding.

							*:lgrepa* *:lgrepadd*
:lgrepa[dd][!] [arguments]
			Same as ":grepadd", except the location list for the
			current window is used instead of the quickfix list.

5.3 Setting up external grep

If you have a standard "grep" program installed, the :grep command may work
well with the defaults.  The syntax is very similar to the standard command: >

	:grep foo *.c

Will search all files with the .c extension for the substring "foo".  The
arguments to :grep are passed straight to the "grep" program, so you can use
whatever options your "grep" supports.

By default, :grep invokes grep with the -n option (show file and line
numbers).  You can change this with the 'grepprg' option.  You will need to set
'grepprg' if:

a)	You are using a program that isn't called "grep"
b)	You have to call grep with a full path
c)	You want to pass other options automatically (e.g. case insensitive
	search.)

Once "grep" has executed, Vim parses the results using the 'grepformat'
option.  This option works in the same way as the 'errorformat' option - see
that for details.  You may need to change 'grepformat' from the default if
your grep outputs in a non-standard format, or you are using some other
program with a special format.

Once the results are parsed, Vim loads the first file containing a match and
jumps to the appropriate line, in the same way that it jumps to a compiler
error in