Wow, THANK YOU!!!

This looks like the simplest and most straight-forward solution. Thank you!

Now, I did notice that the \b word boundary modifier forces it work only if the number is preceded by a whitespace, and I don't want that behavior. And the "c" at the end causes a warning to appear. It says, "Use of /c modifier is meaningless without /g at C:\DESKTOP\test.pl line 11." The second \d* should be \d+ because for some reason if I use \d* it fails to capture the very last digit.

I wrote a modified version of this to see what's happening, and I think, this is precisely how I want it to work: 


#!/usr/bin/perl

use strict;
use warnings;

my $S = " 45 ee33ee#555+'3210>{579}/8888\"~-099.2:";

for (my $i = 0; $i < length($S); $i++)
{
  pos($S) = $i;
  print("\n  :", (($S =~ m/(\d*\G\d+)/) ? $1 : ''), ":    \tptr=$i \ts
+ubstr=", substr($S, $i));
}

[download]

This program outputs the following: 

  ::            ptr=0   substr= 45 ee33ee#555+'3210>{579}/8888"~-099.2
+:
  :45:          ptr=1   substr=45 ee33ee#555+'3210>{579}/8888"~-099.2:
  :45:          ptr=2   substr=5 ee33ee#555+'3210>{579}/8888"~-099.2:
  ::            ptr=3   substr= ee33ee#555+'3210>{579}/8888"~-099.2:
  ::            ptr=4   substr=ee33ee#555+'3210>{579}/8888"~-099.2:
  ::            ptr=5   substr=e33ee#555+'3210>{579}/8888"~-099.2:
  :33:          ptr=6   substr=33ee#555+'3210>{579}/8888"~-099.2:
  :33:          ptr=7   substr=3ee#555+'3210>{579}/8888"~-099.2:
  ::            ptr=8   substr=ee#555+'3210>{579}/8888"~-099.2:
  ::            ptr=9   substr=e#555+'3210>{579}/8888"~-099.2:
  ::            ptr=10  substr=#555+'3210>{579}/8888"~-099.2:
  :555:         ptr=11  substr=555+'3210>{579}/8888"~-099.2:
  :555:         ptr=12  substr=55+'3210>{579}/8888"~-099.2:
  :555:         ptr=13  substr=5+'3210>{579}/8888"~-099.2:
  ::            ptr=14  substr=+'3210>{579}/8888"~-099.2:
  ::            ptr=15  substr='3210>{579}/8888"~-099.2:
  :3210:        ptr=16  substr=3210>{579}/8888"~-099.2:
  :3210:        ptr=17  substr=210>{579}/8888"~-099.2:
  :3210:        ptr=18  substr=10>{579}/8888"~-099.2:
  :3210:        ptr=19  substr=0>{579}/8888"~-099.2:
  ::            ptr=20  substr=>{579}/8888"~-099.2:
  ::            ptr=21  substr={579}/8888"~-099.2:
  :579:         ptr=22  substr=579}/8888"~-099.2:
  :579:         ptr=23  substr=79}/8888"~-099.2:
  :579:         ptr=24  substr=9}/8888"~-099.2:
  ::            ptr=25  substr=}/8888"~-099.2:
  ::            ptr=26  substr=/8888"~-099.2:
  :8888:        ptr=27  substr=8888"~-099.2:
  :8888:        ptr=28  substr=888"~-099.2:
  :8888:        ptr=29  substr=88"~-099.2:
  :8888:        ptr=30  substr=8"~-099.2:
  ::            ptr=31  substr="~-099.2:
  ::            ptr=32  substr=~-099.2:
  ::            ptr=33  substr=-099.2:
  :099:         ptr=34  substr=099.2:
  :099:         ptr=35  substr=99.2:
  :099:         ptr=36  substr=9.2:
  ::            ptr=37  substr=.2:
  :2:           ptr=38  substr=2:
  ::            ptr=39  substr=:

[download]

In reply to Re^2: How to capture backwards using regex? by harangzsolt33
in thread How to capture backwards using regex? by harangzsolt33

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.