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Is there any way to set vertical lines for loops in pseudo-algorithms written with listings package, in an algorithm2e style?

As an example, see here:

The reason for my question is that I am using a pseudo-code syntax without end while, end if and so on, in order to save space, but then it is sometimes difficult to follow the structure of nested loops, specially in the case of large algorithms.

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closed as not constructive by Marco Daniel, Andrew Swann, egreg, Claudio Fiandrino, Stefan Kottwitz Mar 3 '13 at 13:04

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I guess you have good reason for not using the algorithm2e package? – T. Verron Nov 21 '12 at 16:59
@Verron, yes, I find it easier to maintain (make changes and whatever) those algorithms written with listings. Moreover, using algorithm2e and other similar packages is like learning another programming language. – Vicent Nov 21 '12 at 17:02
It would be helpful if you composed a fully compilable MWE including \documentclass and the appropriate packages that sets up the problem. While solving problems is fun, setting them up is not. Then those trying to help can simply cut and paste your MWE and get started on solving problem. – Peter Grill Nov 21 '12 at 20:37

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