help regarding

Chris Rebert clp2 at
Wed Sep 14 21:55:12 EDT 2011

On Wed, Sep 14, 2011 at 6:41 PM, Sagar Neve <nevesagar at> wrote:
> Hi,
> I have a small program where I want to do just a small regex operation.
> I want to see if value of a variable 'A' is present in an another variable
> 'B'.  The below code works fine but as soon as the variable 'A' has some
> string including a dot it fails.

There's no need to use regexes at all! Just do:
if A in B:
    # do something

> for example say:
> B="xxxxyyyydpkg.ipazzzzz
> The code works fine  when A="dpkg"
> however the code does not work when A="dpkg.ipa"

Right, because period is a regex metacharacter. To have it treated as
a literal character to match, escape it:


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