Re: Pattern questions
On Tue, May 23, 2006 at 02:22:32PM +0200, Zdenek Sekera wrote:
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_+-[\]/\]')
do something
endif
2. why when the pattern ends with '+' or '\+' do I get
an error?
Can you be more specific? I tried
:let char = a
:echo char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_+-[\]/\]+'
:echo char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_+-[\]/\]\+'
and neither generated an error.
HTH --Benji Fisher
RE: Pattern questions
Hi, Benji
On Tue, May 23, 2006 at 02:22:32PM +0200, Zdenek Sekera wrote:
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_+-[\]/\]')
do something
endif
2. why when the pattern ends with '+' or '\+' do I get
an error?
Can you be more specific? I tried
:let char = a
:echo char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_+-[\]/\]+'
:echo char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_+-[\]/\]\+'
Sorry, I should have been clearer:
Note the placement of the '+' in my pattern, somewhere
in the middle, there it doesn't cause any problem:
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_+-[\]/\]'
^
| here
The erroneous (in my judgement) patterns are (e.g.) are these:
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_-[\]/\+]')
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_-[\]/\\+]')
So the question is why is it OK to have '+' in the middle
and not at the end?
---Zdenek
Re: Pattern questions
Zdenek Sekera wrote:
Sorry, I should have been clearer:
Note the placement of the '+' in my pattern, somewhere
in the middle, there it doesn't cause any problem:
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_+-[\]/\]'
^
| here
The erroneous (in my judgement) patterns are (e.g.) are these:
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_-[\]/\+]')
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_-[\]/\\+]')
So the question is why is it OK to have '+' in the middle
and not at the end?
It has nothing to do with +, and everything to do with - . The - is a
range character,
more commonly seen with something like [a-z] (which stands for all lower
case characters).
You need to escape the minus sign (ie. \-).
Regards,
Chip Campbell
RE: Pattern questions
-Original Message-
From: Charles E Campbell Jr [mailto:[EMAIL PROTECTED]
Sent: 24 May 2006 15:55
To: Zdenek Sekera
Cc: vim-dev@vim.org
Subject: Re: Pattern questions
Zdenek Sekera wrote:
Sorry, I should have been clearer:
Note the placement of the '+' in my pattern, somewhere
in the middle, there it doesn't cause any problem:
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_+-[\]/\]'
^
| here
The erroneous (in my judgement) patterns are (e.g.) are these:
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_-[\]/\+]')
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_-[\]/\\+]')
So the question is why is it OK to have '+' in the middle
and not at the end?
It has nothing to do with +, and everything to do with - .
The - is a
range character,
more commonly seen with something like [a-z] (which stands
for all lower
case characters).
You need to escape the minus sign (ie. \-).
Ops, I missed that one. Obvious! Thanks.
---Zdenek
Re: Pattern questions
Zdenek Sekera wrote:
I have this:
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_+-[\]/\]')
do something
endif
Basically it is checking for all non-alphanumeric chars
(expect '=').
1. how do I include the ' char?.
I can't seem to find a proper way.
(I'd like to keep the patter in enclosed in '...')
2. why when the pattern ends with '+' or '\+' do I get
an error?
---Zdenek
1. Starting with version 7, you can have a single quote in a
single-quoted string by doubling the single quote. Thus, (four
single quotes) represents one single quote and 'a''b' (quote a quote
quote b quote) is a string consisting of the letters a and b with a
single quote between them.
In all versions, you can concatenate strings, and a single quote can be
enclosed in a double-quoted string. Thus, '' . ' (single double
single space dot space double single double) is an expression whose
value is a String consisting of a double quote followed by a single quote.
2. I don't know, but I think it's either a bug, or documented under
:help pattern.txt somewhere.
Best regards,
Tony.
RE: Pattern questions
-Original Message-
From: A.J.Mechelynck [mailto:[EMAIL PROTECTED]
Sent: 23 May 2006 14:22
To: Zdenek Sekera
Cc: vim-dev@vim.org
Subject: Re: Pattern questions
Zdenek Sekera wrote:
I have this:
if (char =~ '\m[;|?:[EMAIL PROTECTED]*(){}\\_+-[\]/\]')
do something
endif
Basically it is checking for all non-alphanumeric chars
(expect '=').
1. how do I include the ' char?.
I can't seem to find a proper way.
(I'd like to keep the patter in enclosed in '...')
2. why when the pattern ends with '+' or '\+' do I get
an error?
---Zdenek
1. Starting with version 7, you can have a single quote in a
single-quoted string by doubling the single quote. Thus, (four
single quotes) represents one single quote and 'a''b' (quote a quote
quote b quote) is a string consisting of the letters a and b with a
single quote between them.
Arrrgh, missed that in the doc somewhere, I'm running vim7
(I forgot to say so)
In all versions, you can concatenate strings, and a single
quote can be
enclosed in a double-quoted string. Thus, '' . ' (single double
single space dot space double single double) is an expression whose
value is a String consisting of a double quote followed by a
single quote.
Arrrgh :-), that I new but didn't think of.
2. I don't know, but I think it's either a bug, or documented under
:help pattern.txt somewhere.
My feelings, too, but I can't find it anywhere in the pattern.txt
(and I printer the newest on purpose :-)!
Thanks, Tony, for help.
---Zdenek
