Easy, you can write this (from the Camel 3 p. 280):

#!/bin/perl -P
#include "./francais.h"

utilise strict;
utilise Data::Dumper;

mon %hdh;                           # mes, ma and mon are all like my

tant_que (<>) {
  suivant sauf_si( r/^(.*?):\e*//); # r -> remplacer \e -> espace
  mon FFqui=FF1;                    # I do not have the Euro sign on m
+y 
                                    # keyboard so I used F(rench) F(ra
+nc)
  pour mon FFchamp( separe) {           
    mes( FFclef, FFvaleur)= separe /=/, FFchamp; 
  FFhdh{FFqui}{FFclef}= FFvaleur;  
  }
}
imprime Dumper( %hdh);
[download]

Of course you need a francais.h file

#define utilise  use
#define mon      my
#define ma       my
#define mes      my
#define tant_que while
#define sauf_si  unless
#define separe   split
#define suivant  next
#define imprime  print
#define ouvre    open
#define meurt    die
#define pour     for
#define ou       or

#define execute()              \
while( <DATA>)                 \
  { $programme .= $_; }        \
$programme=~ s{FF}{\$}g;       \
$programme=~ s{r/}{s/}g;       \
$programme=~ s{\\e}{\\s}g;     \
eval( $programme) or die $@;   

execute();
__DATA__
[download]

And then you can run it using an input file such as:

pierreafeux: mari=frederic ami=barnabe femme=wilma animal_de_companie=
+dino
simpson:     mari=omer femme=marjorie enfant=barthelemie
dupont:      mari=jean femme=marie enfant=pierre animal_de_companie=me
+dor
[download]

You will need to make this file executable, or run it with perl -P as you can't do just perl <file> and have the -P on the command line take-over properly.

And I know it is not robust, especially the quick hacks to French-ize the regexp, ask Damian if you want a real French module!

Update: I removed the display of the program and moved the execute(); call to the included file, it looks better now.