I created a sample script and used re 'debug',I really couldn't understand the output ... 
#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;
use re 'debug';
my $file= "//depot/asic/msmshared/users/QTVOEMDrops/7600/3555473R/qtv/
+player/audioplayer/audiocmx.cpp";
my $update_p4where=`p4 where $file`;
#print "$update_p4where";
my $update_p4filelog=`p4 filelog $file`;
print "$update_p4filelog\n";
my $update_base_branched_p4path = $update_p4filelog =~ /branch\sfrom(.
+*\/(.*))\#\,(\#\d+)$/xmsg;
print "$update_base_branched_p4path\n";

[download]

Compiling REx `branch from(.*/(.*))\#,(\#\d+)$' size 30 first at 1

1: EXACT <branchfrom>(5) 5: OPEN1(7) 7: STAR(9) 8: SANY(0) 9: EXACT </>(11) 11: OPEN2(13) 13: STAR(15) 14: SANY(0) 15: CLOSE2(17) 17: CLOSE1(19) 19: EXACT <#,>(21) 21: OPEN3(23) 23: EXACT <#>(25) 25: PLUS(27) 26: DIGIT(0) 27: CLOSE3(29) 29: MEOL(30) 30: END(0)

anchored `branch' at 0 floating `#,#' at 12..2147483647 (checking anchored) minlen 16

//depot/asic/msmshared/users/QTVOEMDrops/7600/3555473R/qtv/player/audioplayer/audiocmx.cpp ... #2 change 1548905 edit on 2010/12/09 by c_krisri@C_KRISRIXP (ktext) 'Audio loss when doing nultiple ' ... #1 change 1548876 branch on 2010/12/09 by c_krisri@C_KRISRIXP (ktext) 'Branching for orphan release fo' ... ... branch from //source/qcom/qct/multimedia/qtv/player/audioplayer/rel/1.1/src/audiocmx.cpp#1,#8

Guessing start of match, REx `branch\sfrom(.*/(.*))\#,(\#\d+)$' against `//depot/asic/msmshared/users/QTVOEMDrops/7600/3555473R/qtv/p...'...

Found anchored substr `branch' at offset 219... Contradicts floating substr `#,#', giving up...//Why is it giving up?why isn't it goint to the next line??

Match rejected by optimizer Freeing REx: `branch\sfrom(.*/(.*))\#,(\#\d+)$'

In reply to Re^4: Regex to grab data after the work "branch from" by perl_mystery
in thread Regex to grab data after the work "branch from" by perl_mystery

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