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138567Re: regex variable

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  • shawn wilson
    Jul 18, 2013
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      Sweet, didn't know about C+r - that works. I'll look more into the
      leader stuff (which'll probably work better) later. Thanks

      On Thu, Jul 18, 2013 at 9:55 AM, Marcin Szamotulski <mszamot@...> wrote:
      > On 09:42 Thu 18 Jul , shawn wilson wrote:
      >> Is there a way of using a variable in a regex?
      >>
      >> I'm constantly looking for the first octet of IP addresses, so I do:
      >> /[^0-9\.]10\.
      >>
      >> What I've been doing is hitting / and up arrow and then edit but if I
      >> could store [^0-9\.] in something easily accessed, that would save
      >> some time.
      >
      > Hi,
      >
      > You can set:
      > :let ip='[^0-9\.]
      > and then use:
      > /^r=ip<cr>
      > (i.i. hit '/' for search, the CTRL+r, then =, then write the variable name and
      > then hit <cr>). See ":help c^r=" for the expression register.
      >
      > But maybe more useful is make a mapping:
      > cmap <Leader>i ['0-9\.]
      >
      > or even better allow for this map only in search:
      > cmap <expr> <Leader>i (getcmdtype() == '/' ? "['0-9\\.]" : '\i')
      >
      > I assumed here that your <Leader> key is set to '\', otherwise you just
      > have to modify the '\i'.
      >
      > Best regards,
      > Marcin
      >
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