I'm using Term::ANSIColor to apply colors and styles (boldface, underline) to ASCII text strings, which I then want to wrap to a certain width for printing to the terminal. I found Text::ANSI::Util qw/ta_wrap/ which purports to do this properly for strings with these escape sequences, but I'm encountering what appear to be bugs. On the other hand, am I just not using the module correctly?

Here's a test program that illustrates some problems. Since I can't show the colors or styling I'll try to add some commentary to the output.

#!/usr/bin/env perl

use 5.010;
use warnings;
use strict;
use Term::ANSIColor qw(color :constants);
use Text::ANSI::Util qw/ta_wrap/;
sub show {
    my $line = shift;
    my $wrapped = ta_wrap($line, 30,
                  {flindent => q[ ] x 5, slindent => q[ ] x 5 } );

    say "BEFORE:";
    say $line;
    # print unpack('H*', $_) . ' ' for split //, $line;
    say '';

    say "AFTER:";
    say $wrapped;
    # print unpack('H*', $_) . ' ' for split //, $wrapped;
    say "\n";
}
show "Marley was " . BOLD . color('green') . "dead, " . RESET . "to be
+gin with.";
show "Marley was " . color('green')        . "dead, " . RESET . "to be
+gin with.";
show "Marley was " . BOLD                  . "dead, " . RESET . "to be
+gin with.";

show "Marley was " . UNDERLINE . color('green') . "dead, to begin with
+. " . RESET . "There is no doubt...";
show "Marley was " . UNDERLINE                  . "dead, to begin with
+. " . RESET . "There is no doubt...";
[download]

Output:

BEFORE:
Marley was dead, to begin with.

AFTER: ## 'dead,' is bold and green but we lost the space preceding it
+ ##
     Marley wasdead, to begin
     with.

BEFORE:
Marley was dead, to begin with.

AFTER: ## 'dead,' is green. This is correctly rendered. ##
     Marley was dead, to begin
     with.

BEFORE:
Marley was dead, to begin with.

AFTER: ## 'dead,' is bold. This is correctly rendered. ##
     Marley was dead, to begin
     with.

BEFORE:
Marley was dead, to begin with. There is no doubt...

AFTER: ## 'dead, to begin with. ' is underlined/green but the precedin
+g space was lost, and underlining between "begin" and "with" persiste
+d across the margin ##
     Marley wasdead, to begin
     with. There is no
     doubt...

BEFORE:
Marley was dead, to begin with. There is no doubt...

AFTER: ## Underlining only, but again the margin between "begin" and "
+with" is underlined. ##
     Marley was dead, to begin
     with. There is no
     doubt...
[download]

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