You're missing the negation ^ in the character class. Also, you're using forward slashes in the regex, but backslashes in the string. Moreover, I'm not sure the ? is needed. 
#! /usr/bin/perl
use strict;
use warnings;

use utf8;

my $input = 'TEXT: "C:\temp\test äbc.txt"';

print $input =~ /.*TEXT:\s+".*[\\]([^\\"]+)"/;
#                            ~  ~   ~ ~

[download]
map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re^5: Regex to get file name from the path with spaces by choroba
in thread Regex to get file name from the path with spaces by szpt9m

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