my take on this is to KISS and to chain 2 (s)printf (similar to GF's second solution)

use 5.012; use warnings; my $width = 60 - 1; my $scale = '1.......10........20........30........40........50....... +.60'; my $long_string = q{The quick brown fox jumps over the lazy dog}; my $short_string = q{lazy dog}; my $pat = "%.2f %d/%d/%d %s"; my @aoa = ( [ qw/79.3 2022 1 8 /, $long_string ], [ qw/394571 22 10 81 /, $long_string ], [ qw/123456.78 12345 123 1234 /, $long_string ], [ qw/79.3 2022 1 8 /, $short_string ], ); say $scale; for my $aref (@aoa) { printf "%.*s|\n" , $width => sprintf ($pat => @$aref) . " "x$width; }
OUTPUT:
1.......10........20........30........40........50........60 79.30 2022/1/8 The quick brown fox jumps over the lazy dog | 394571.00 22/10/81 The quick brown fox jumps over the lazy | 123456.78 12345/123/1234 The quick brown fox jumps over the| 79.30 2022/1/8 lazy dog |

NB: I appended " "x $max_width for left alignment by minimal length.

There is most probably a possibility to enforce left alignment in the pattern, that I'm ignoring/missing.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

update

off by one, corrected 60 to 59

update

> to enforce left alignment in the pattern, that I'm ignoring/missing.

prepending - to the pattern signals a left align, but we'll still need $witdh twice

use 5.012; use warnings; my $width = 60 - 1; my $scale = '1.......10........20........30........40........50....... +.60'; my $long_string = q{The quick brown fox jumps over the lazy dog}; my $short_string = q{lazy dog}; my $pat = "%.2f %d/%d/%d %s"; my @aoa = ( [ qw/79.3 2022 1 8 /, $long_string ], [ qw/394571 22 10 81 /, $long_string ], [ qw/123456.78 12345 123 1234 /, $long_string ], [ qw/79.3 2022 1 8 /, $short_string ], ); say $scale; for my $aref (@aoa) { printf "%-*.*s|\n" , $width, $width => sprintf ($pat => @$aref) ; }

In reply to Re: How to use sprintf %n formatting pattern (chain printf) by LanX
in thread How to use sprintf %n formatting pattern by ibm1620

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