Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.javascript > #16880

Re: Quickie - Regexp for a string not at the beginning of the line

Cross-posted to 5 groups.

Show key headers only | View raw

On 10/25/2012 8:08 PM, Rivka Miller wrote:
> On Oct 25, 2:27 pm, Danny <dann90...@gmail.com> wrote:
>> Why you just don't give us the string/input, say a line or two, and what you want off of it, so we can tell better what to suggest
>
> no one has really helped yet.

Because there is no solution - there IS no _RE_ that will match a string not at 
the beginning of a line.

Now if you want to know how to extract a string that matches an RE in awk, 
that'd be (just one way):

    awk 'match($0,/.[$]hello[$]/) { print substr($0,RSTART+1,RLENGTH-1) }'

and other tools would have their ways of producing the same output, but that's 
not the question you're asking.

     Ed.
>
> I want to search and modify.
>
> I dont wanna be tied to a specific language etc so I just want a
> regexp and as many versions as possible. Maybe I should try in emacs
> and so I am now posting to emacs groups also, although javascript has
> rich set of regexp facilities.
>
> examples
>
> $hello$ should not be selected but
> not hello but all of the $hello$ and $hello$ ... $hello$ each one
> selected
>
> =================
> original post
> =================
>
>
> Hello Programmers,
>
> I am looking for a regexp for a string not at the beginning of the
> line.
>
> For example, I want to find $hello$ that does not occur at the
> beginning of the string, ie all $hello$ that exclude ^$hello$.
>
> In addition, if you have a more difficult problem along the same
> lines, I would appreciate it. For a single character, eg < not at the
> beginning of the line, it is easier, ie
>
> ^[^<]+<
>
> but I cant use the same method for more than one character string as
> permutation is present and probably for more than one occurrence,
> greedy or non-greedy version of [^<]+ would pick first or last but not
> the middle ones, unless I break the line as I go and use the non-
> greedy version of +. I do have the non-greedy version available, but
> what if I didnt?
>
> If you cannot solve the problem completely, just give me a quick
> solution with the first non beginning of the line and I will go from
> there as I need it in a hurry.
>
> Thanks
>

Back to comp.lang.javascript | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Quickie - Regexp for a string not at the beginning of the line Rivka Miller <rivkaumiller@gmail.com> - 2012-10-25 13:53 -0700
  Re: Quickie - Regexp for a string not at the beginning of the line Janis Papanagnou <janis_papanagnou@hotmail.com> - 2012-10-25 23:01 +0200
  Re: Quickie - Regexp for a string not at the beginning of the line Danny <dann90038@gmail.com> - 2012-10-25 14:27 -0700
    Re: Quickie - Regexp for a string not at the beginning of the line Rivka Miller <rivkaumiller@gmail.com> - 2012-10-25 18:08 -0700
      Re: Quickie - Regexp for a string not at the beginning of the line Ed Morton <mortonspam@gmail.com> - 2012-10-25 21:00 -0500
      Re: Quickie - Regexp for a string not at the beginning of the line Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-10-26 03:11 +0100
        Re: Quickie - Regexp for a string not at the beginning of the line Rivka Miller <rivkaumiller@gmail.com> - 2012-10-25 21:45 -0700
          Re: Quickie - Regexp for a string not at the beginning of the line Janis Papanagnou <janis_papanagnou@hotmail.com> - 2012-10-26 11:18 +0200
          Re: Quickie - Regexp for a string not at the beginning of the line Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-10-26 13:11 +0100
          Re: Quickie - Regexp for a string not at the beginning of the line Ed Morton <mortonspam@gmail.com> - 2012-10-26 07:32 -0500
      Re: Quickie - Regexp for a string not at the beginning of the line anon@anon.anon - 2012-10-25 23:22 -0400
  Re: Quickie - Regexp for a string not at the beginning of the line Asen Bozhilov <asen.bozhilov@gmail.com> - 2012-10-26 03:46 -0700

csiph-web