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=head1 NAME
tran - transcribe between character scripts
=head1 SYNOPSIS
B<tran> E<lt>I<input>
B<echo> Hello world B<|> B<tran> I<script>
=head1 DESCRIPTION
B<tran> lets you convert between Latin and a number of other character
scripts. It works as a filter, reading standard input and writing to the
standard output.
Please specify the target script as the argument. If none is given, the
default is latin. Specify "I<list>" to get the list of supported scripts.
=head1 OPTIONS
=over
=item B<-d>, B<--debug>
marks characters that haven't been touched in color. The output must go to a
terminal, "B<less -R>" or something that can understand ANSI colors.
=back
=head1 CAVEATS
There is currently no triangulation -- to go between two scripts other than
latin you need to convert to latin first.
This especially matters for I<ascii>: to convert, eg, cyrillic text, you
need to use a pipe: B<tran|tran ascii>.
The I<ascii> conversion, like any other, leaves characters it doesn't have
data for intact, leading to non-ASCII output. This might be what you want
if you need to just drop diacritics and expand digraphs, but if you're after
pure 7-bit text, use "B<tran ascii|perl -CIO -pe 'tr /\x1-\x7e/?/c'>"
(B</usr/bin/tr> works on bytes not characters).
Not all of your recipients may have all required fonts, especially for Plane
1 scripts. Such support is especially bad on old terminals that use bitmap
fonts, such as I<xterm>, text-mode Linux or pre-Windows 10 console.
=head1 BUGS
Ancient (ie, non-Unicode) charsets are not supported at all. B<tran> will
obliviously write UTF-8 even when inappropriate.
This tool is pretty slow, especially on startup. If this is a problem for
anyone, please holler -- I did not optimize it at all.
=head1 AUTHOR
Adam Borowski (kilobyte@angband.pl)
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