=head1 NAME

convert-mudela  - convert mudela to newer versions

=head1 SYNOPSIS

	convert-mudela [options] [files]

=head1 DESCRIPTION

convert-mudela sequentially applies different mudela-conversions to
upgrade a Mudela input file from FROM_PATCHLEVEL to TO_PATCHLEVEL.
If no files are given, the standard input and output are used

=head1 OPTIONS

=over 4

=item B<--output>

The output file to write

=item B<--edit> 

Do an inline edit of the input file. override B<--output>

=item B<--show-rules>

shows all known conversions.

=item B<--from>=FROM_PATCHLEVEL

Set the level to convert from. If this is not set, convert-mudela will
guess this, on the basis of C<\version> strings in the file

=item B<--to>=TO_PATCHLEVEL

Set the goal version of the conversion. It defaults to the latest
available version.  

=back

=head1 BUGS

Not all language changes are handled. Multiple output options won't work

=head1 AUTHOR

Han-Wen Nienhuys <hanwen@gnu.org>