Re: negative match pattern, again
It follows the general form of a negative line search for embedded search: /^\%(.*[limit0.*]search[.*limit1]\)[EMAIL PROTECTED] For example, to match a line that contains foo but does not contain bar between big and tummy: /\%(.*big.*bar.*tummy\)[EMAIL PROTECTED] Edward Wong wrote: Learn a lot more about regexp from this post. Thanks! Sorry, I missed the ^ anchor: /^\%(.*big.*bar.*tummy\)[EMAIL PROTECTED] Just a question, why it is necessary to have the ^ anchor? Isn't .* already includes the characters start from the beginning of the line? Sorry if I'm asking a stupid one Not a stupid question at all. [EMAIL PROTECTED] and variants are tricky (IMHO). Considering: /^\%(.*big.*bar.*tummy\)[EMAIL PROTECTED] First, big.*bar.*tummy can not match quite often! Just as [EMAIL PROTECTED] ordered. So look at the following two lines: big junk bar junk tummy junk foo junk bar junk tummy junk foo Its best to :set hls first, so as to see what matches. Try matching with and without that leading ^. With the ^, big junk bar junk tummy junk foo-- doesn't match junk bar junk tummy junk foo-- matches which is what one would expect. However, without that ^, the pattern is free to start matching _after_ the start-of-line, and so ig junk bar junk tummy junk foo -- matches junk bar junk tummy junk foo-- matches (I left off the non-matching b in the first line). Thus, both lines match, which isn't what's wanted, especially considering the regexp was expected to be used with :g/regex-here/somecmd Regards, Chip Campbell
Re: negative match pattern, again
Very great explanation! Many thanks to Gerald and Chip Campbell. Now I _really_ got it. :) On 6/13/06, Charles E Campbell Jr [EMAIL PROTECTED] wrote: It follows the general form of a negative line search for embedded search: /^\%(.*[limit0.*]search[.*limit1]\)[EMAIL PROTECTED] For example, to match a line that contains foo but does not contain bar between big and tummy: /\%(.*big.*bar.*tummy\)[EMAIL PROTECTED] Edward Wong wrote: Learn a lot more about regexp from this post. Thanks! Sorry, I missed the ^ anchor: /^\%(.*big.*bar.*tummy\)[EMAIL PROTECTED] Just a question, why it is necessary to have the ^ anchor? Isn't .* already includes the characters start from the beginning of the line? Sorry if I'm asking a stupid one Not a stupid question at all. [EMAIL PROTECTED] and variants are tricky (IMHO). Considering: /^\%(.*big.*bar.*tummy\)[EMAIL PROTECTED] First, big.*bar.*tummy can not match quite often! Just as [EMAIL PROTECTED] ordered. So look at the following two lines: big junk bar junk tummy junk foo junk bar junk tummy junk foo Its best to :set hls first, so as to see what matches. Try matching with and without that leading ^. With the ^, big junk bar junk tummy junk foo-- doesn't match junk bar junk tummy junk foo-- matches which is what one would expect. However, without that ^, the pattern is free to start matching _after_ the start-of-line, and so ig junk bar junk tummy junk foo -- matches junk bar junk tummy junk foo-- matches (I left off the non-matching b in the first line). Thus, both lines match, which isn't what's wanted, especially considering the regexp was expected to be used with :g/regex-here/somecmd Regards, Chip Campbell -- Ed
Re: negative match pattern, again
I need to match lines using g// (not v//); those lines having 'foo' and NOT having /)\s*;/ anywhere in the line. How do I write such regex. Well, there are several ways to go about it. One would be to use Dr. Chip's logipat script: http://vim.sourceforge.net/scripts/script.php?script_id=1290 Another would be to use something like :g/foo/if getline(.)!~'blah' | print getline(.) | endif which would search for lines that do contain foo, but don't contain blah. I don't know about using the \ atom. There might be a solution with that as well, but for negating matters, it becomes trickier. -tim
Re: negative match pattern, again
On Mon, Jun 12, 2006 at 02:42:18PM +, Yakov Lerner wrote: I need to match lines using g// (not v//); those lines having 'foo' and NOT having /)\s*;/ anywhere in the line. How do I write such regex. I think I need to use \ ^.*foo\^XXX$ and then put, in place of XXX, the pattern that matches anything not containing /)\s*;/. How do I express it in vim. Yakov I'd write \([^)]\|)\S\|)\s*[^;]\) failing other things. How about preceding 'foo' with '\(...\)\@!' and following it with '\(...\)[EMAIL PROTECTED] as in /\()\s*;.*\)\@!foo\(.*)\s*;\)[EMAIL PROTECTED]/ HTH --Benji Fisher
Re: negative match pattern, again
On 6/12/06, Tim Chase [EMAIL PROTECTED] wrote:
I need to match lines using g// (not v//); those lines having
'foo' and NOT having /)\s*;/ anywhere in the line. How do I
write such regex.
Well, there are several ways to go about it. One would be to use
Dr. Chip's logipat script:
http://vim.sourceforge.net/scripts/script.php?script_id=1290
LogiPat does wonders. Thanks.
For the record,
:echo LogiPat('foo!bar')
produces:
\%(.*foo.*\^\%(\%(bar\)[EMAIL PROTECTED])*$\)
Yakov
Re: negative match pattern, again
Yakov Lerner wrote:
I need to match lines using g// (not v//); those lines having
'foo' and NOT having /)\s*;/ anywhere in the line. How do I write such
regex.
I think I need to use \
^.*foo\^XXX$
and then put, in place of XXX, the pattern that
matches anything not containing /)\s*;/. How do I express it in vim.
Yakov
I'd write \([^)]\|)\S\|)\s*[^;]\) failing other things.
May I suggest that you try LogiPat out:
http://vim.sourceforge.net/scripts/script.php?script_id=1290
or at
http://mysite.verizon.net/astronaut/vim/index.html#VimFuncs
(see LogiPat)
(as always, my website has the most up-to-date version)
In this case, :echo LogiPat('foo !)\s*;') yields
\%(.*foo.*\^\%(\%()\s*;\)[EMAIL PROTECTED])*$\)
Regards,
Chip Campbell
Re: negative match pattern, again
On 6/12/06, Benji Fisher [EMAIL PROTECTED] wrote: On Mon, Jun 12, 2006 at 02:42:18PM +, Yakov Lerner wrote: I need to match lines using g// (not v//); those lines having 'foo' and NOT having /)\s*;/ anywhere in the line. How do I write such regex. I think I need to use \ ^.*foo\^XXX$ and then put, in place of XXX, the pattern that matches anything not containing /)\s*;/. How do I express it in vim. Yakov I'd write \([^)]\|)\S\|)\s*[^;]\) failing other things. How about preceding 'foo' with '\(...\)\@!' and following it with '\(...\)[EMAIL PROTECTED] as in /\()\s*;.*\)\@!foo\(.*)\s*;\)[EMAIL PROTECTED]/ Benji, Im not sure the post-foo part works. I think it will give the false match whenever it something after foo that does not match )\s*;. This is not what I wanted. Yakov
Re: negative match pattern, again
On 6/12/06, Gerald Lai [EMAIL PROTECTED] wrote:
On Mon, 12 Jun 2006, Gerald Lai wrote:
On Mon, 12 Jun 2006, Yakov Lerner wrote:
On 6/12/06, Tim Chase [EMAIL PROTECTED] wrote:
I need to match lines using g// (not v//); those lines having
'foo' and NOT having /)\s*;/ anywhere in the line. How do I
write such regex.
Well, there are several ways to go about it. One would be to use
Dr. Chip's logipat script:
http://vim.sourceforge.net/scripts/script.php?script_id=1290
LogiPat does wonders. Thanks.
For the record,
:echo LogiPat('foo!bar')
produces:
\%(.*foo.*\^\%(\%(bar\)[EMAIL PROTECTED])*$\)
Yakov
In addition to the regex above, you can also do:
/^\%(.*)\s*;\)[EMAIL PROTECTED]
It's a little shorter, and probably a little faster since the LogiPat
regex does a \%(..\)* for every character position of the line. The
speed is evident for a long line.
It follows the general form of a negative line search for embedded
search:
/^\%(.*[limit0.*]search[.*limit1]\)[EMAIL PROTECTED]
For example, to match a line that contains foo but does not contain
bar between big and tummy:
/\%(.*big.*bar.*tummy\)[EMAIL PROTECTED]
Sorry, I missed the ^ anchor:
/^\%(.*big.*bar.*tummy\)[EMAIL PROTECTED]
Is the trailing .* necessary there ? Why ?
Yakov
Re: negative match pattern, again
On Mon, 12 Jun 2006, Yakov Lerner wrote:
On 6/12/06, Gerald Lai [EMAIL PROTECTED] wrote:
On Mon, 12 Jun 2006, Gerald Lai wrote:
On Mon, 12 Jun 2006, Yakov Lerner wrote:
On 6/12/06, Tim Chase [EMAIL PROTECTED] wrote:
I need to match lines using g// (not v//); those lines having
'foo' and NOT having /)\s*;/ anywhere in the line. How do I
write such regex.
Well, there are several ways to go about it. One would be to use
Dr. Chip's logipat script:
http://vim.sourceforge.net/scripts/script.php?script_id=1290
LogiPat does wonders. Thanks.
For the record,
:echo LogiPat('foo!bar')
produces:
\%(.*foo.*\^\%(\%(bar\)[EMAIL PROTECTED])*$\)
Yakov
In addition to the regex above, you can also do:
/^\%(.*)\s*;\)[EMAIL PROTECTED]
It's a little shorter, and probably a little faster since the LogiPat
regex does a \%(..\)* for every character position of the line. The
speed is evident for a long line.
It follows the general form of a negative line search for embedded
search:
/^\%(.*[limit0.*]search[.*limit1]\)[EMAIL PROTECTED]
For example, to match a line that contains foo but does not contain
bar between big and tummy:
/\%(.*big.*bar.*tummy\)[EMAIL PROTECTED]
Sorry, I missed the ^ anchor:
/^\%(.*big.*bar.*tummy\)[EMAIL PROTECTED]
Is the trailing .* necessary there ? Why ?
Nope, not necessary for :g//. I left it there for hlsearch appeal ;)
HTH.
--
Gerald
Re: negative match pattern, again
Gerald Lai wrote:
On Mon, 12 Jun 2006, Gerald Lai wrote:
On Mon, 12 Jun 2006, Yakov Lerner wrote:
On 6/12/06, Tim Chase [EMAIL PROTECTED] wrote:
I need to match lines using g// (not v//); those lines having
'foo' and NOT having /)\s*;/ anywhere in the line. How do I
write such regex.
Well, there are several ways to go about it. One would be to use
Dr. Chip's logipat script:
http://vim.sourceforge.net/scripts/script.php?script_id=1290
LogiPat does wonders. Thanks.
For the record,
:echo LogiPat('foo!bar')
produces:
\%(.*foo.*\^\%(\%(bar\)[EMAIL PROTECTED])*$\)
Yakov
In addition to the regex above, you can also do:
/^\%(.*)\s*;\)[EMAIL PROTECTED]
It's a little shorter, and probably a little faster since the LogiPat
regex does a \%(..\)* for every character position of the line. The
speed is evident for a long line.
It follows the general form of a negative line search for embedded
search:
/^\%(.*[limit0.*]search[.*limit1]\)[EMAIL PROTECTED]
For example, to match a line that contains foo but does not contain
bar between big and tummy:
/\%(.*big.*bar.*tummy\)[EMAIL PROTECTED]
Sorry, I missed the ^ anchor:
/^\%(.*big.*bar.*tummy\)[EMAIL PROTECTED]
Hello!
These two regex's produce different results; I'm using foo and bar
instead of foo and )\s*;, because its more human readable...
To see the results, use:
vim tst
:set hls
:so pat1
:so pat2
(also, use a fixed font to see this properly in the email)
-- tst --P1--P2-
foo * *
bar
foo junk* *
bar junk
junk foo* *
junk bar
foo junk bar*
bar junk foo
-- pat1
/^\%(bar\)[EMAIL PROTECTED]
-- pat2
/\%(.*foo.*\^\%(\%(bar\)[EMAIL PROTECTED])*$\)
--
To summarize:
Gerald's pattern (P1, pat1) matches the same three that LogiPat's (P2,
pat2) does,
plus it allows one line that P2 rejects.
Regards,
Chip Campbell
Re: negative match pattern, again
On Mon, 12 Jun 2006, Charles E Campbell Jr wrote:
Gerald Lai wrote:
On Mon, 12 Jun 2006, Gerald Lai wrote:
On Mon, 12 Jun 2006, Yakov Lerner wrote:
On 6/12/06, Tim Chase [EMAIL PROTECTED] wrote:
I need to match lines using g// (not v//); those lines having
'foo' and NOT having /)\s*;/ anywhere in the line. How do I
write such regex.
Well, there are several ways to go about it. One would be to use
Dr. Chip's logipat script:
http://vim.sourceforge.net/scripts/script.php?script_id=1290
LogiPat does wonders. Thanks.
For the record,
:echo LogiPat('foo!bar')
produces:
\%(.*foo.*\^\%(\%(bar\)[EMAIL PROTECTED])*$\)
Yakov
In addition to the regex above, you can also do:
/^\%(.*)\s*;\)[EMAIL PROTECTED]
It's a little shorter, and probably a little faster since the LogiPat
regex does a \%(..\)* for every character position of the line. The
speed is evident for a long line.
It follows the general form of a negative line search for embedded
search:
/^\%(.*[limit0.*]search[.*limit1]\)[EMAIL PROTECTED]
For example, to match a line that contains foo but does not contain
bar between big and tummy:
/\%(.*big.*bar.*tummy\)[EMAIL PROTECTED]
Sorry, I missed the ^ anchor:
/^\%(.*big.*bar.*tummy\)[EMAIL PROTECTED]
Hello!
These two regex's produce different results; I'm using foo and bar
instead of foo and )\s*;, because its more human readable...
To see the results, use:
vim tst
:set hls
:so pat1
:so pat2
(also, use a fixed font to see this properly in the email)
-- tst --P1--P2-
foo * *
bar
foo junk* *
bar junk
junk foo* *
junk bar
foo junk bar*
bar junk foo
-- pat1
/^\%(bar\)[EMAIL PROTECTED]
-- pat2
/\%(.*foo.*\^\%(\%(bar\)[EMAIL PROTECTED])*$\)
--
To summarize:
Gerald's pattern (P1, pat1) matches the same three that LogiPat's (P2, pat2)
does,
plus it allows one line that P2 rejects.
In the same context, pat1 should instead be:
/^\%(.*bar\)[EMAIL PROTECTED]
and both patterns match the same.
--
Gerald
Re: negative match pattern, again
Gerald Lai wrote: In the same context, pat1 should instead be: /^\%(.*bar\)[EMAIL PROTECTED] and both patterns match the same. And so they do! (with your pattern having .* again, which is unnecessary for :g... as you mentioned). Regards, Chip Campbell
Re: negative match pattern, again
It follows the general form of a negative line search for embedded search: /^\%(.*[limit0.*]search[.*limit1]\)[EMAIL PROTECTED] For example, to match a line that contains foo but does not contain bar between big and tummy: /\%(.*big.*bar.*tummy\)[EMAIL PROTECTED] Learn a lot more about regexp from this post. Thanks! Sorry, I missed the ^ anchor: /^\%(.*big.*bar.*tummy\)[EMAIL PROTECTED] Just a question, why it is necessary to have the ^ anchor? Isn't .* already includes the characters start from the beginning of the line? Sorry if I'm asking a stupid one -- Ed
