#!/usr/bin/env bash

# @(#) s2	Demonstrate preparing and aligning text fields, sed, expand.

pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C sed expand

FILE=${1-data1}
pl " Input file $FILE:"
cat -A $FILE

pl " Results of expand:"
sed 's/   */\t/g' $FILE |
expand -t '20,30,50' |
tee f1

pl " Displaying special characters (if any) in output:"
cat -A f1

exit 0

% ./s2

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian GNU/Linux 5.0.8 (lenny) 
bash GNU bash 3.2.39
sed GNU sed version 4.1.5
expand (GNU coreutils) 6.10

-----
 Input file data1:
Charles Dixon  Age 23       Hometown Darlington  Postcode DL1 2DC$
Fred Bixton  Age 34  Hometown Leeds     Postcode LS1 5XS$
Jim Davis            Age 48      Hometown Cardiff  CF2 8YY$

-----
 Results of expand:
Charles Dixon       Age 23    Hometown Darlington Postcode DL1 2DC
Fred Bixton         Age 34    Hometown Leeds      Postcode LS1 5XS
Jim Davis           Age 48    Hometown Cardiff    CF2 8YY

-----
 Displaying special characters (if any) in output:
Charles Dixon       Age 23    Hometown Darlington Postcode DL1 2DC$
Fred Bixton         Age 34    Hometown Leeds      Postcode LS1 5XS$
Jim Davis           Age 48    Hometown Cardiff    CF2 8YY$