Re: Regular expression and VIm

On Fri, Dec 13, 2013 at 7:53 PM, Tim Chase <vim@tim.thechases.com> wrote:
> On 2013-12-13 19:35, vicky b wrote:
>> I see most of time for complex editng regular expression is a
>> must , so what is the best way to start learning regular expression
>> any thing specific to vim.
>
> There are a number of good resources for learning regular
> expressions, as a quick web search for "learn regular expressions"
> returns. Also searching your favorite book-seller's site for
> "regular expression" returns a number of well-known titles.
>
> Any good book/tutorial/site will introduce you to the ideas. Once
> you have those down, there are various flavors, so all you need to
> learn then is "how do I do $FUNCTIONALITY in $ENVIRONMENT?" And
> sometimes even that environment changes (such as Vim's "magic" and
> "no-magic" modifiers). So Perl/Python regexps have "\b" for
> indicating a word-boundary while Vim splits them out into "\<" and
> "\>" for beginning-of-word and end-of-word (I think Perl is adding
> this functionality in an upcoming or recent release). For the
> basics, it's mostly a matter of whether something is escaped with a
> backslash or not (grouping with parens, the one-or-more "+", the N-M
> curly-braces, etc). For more complex things like back-references and
> zero-width assertions, the syntax varies a bit more widely.
For the basic syntax, an interactive visualizer can aid in the
learning process, like rubular.com / debuggex.com / regexpal.com /

>
> So first learn the basics of regular expressions, then read up (or
> ask questions here on the list) on Vim-specific flavor.
>
> -tim

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