Re: [9fans] fmt and unicode text

[David Presotto <presotto@closedmind.org>]

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Odd, of the two examples, the old fmt looks reasonable on my screen
and the other has odd long and unbalanced line.  What is the
advantage here?

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From: mirtchov@cpsc.ucalgary.ca
To: 9fans@cse.psu.edu
Subject: [9fans] fmt and unicode text
Date: Sun, 16 Nov 2003 12:29:24 -0700
Message-ID: <6a245736ff4fa6f1dcf7d9b2303482bd@plan9.ucalgary.ca>

This diff makes 'fmt' understand utf text without cutting it short:

	home% diff fmt.c /sys/src/cmd/fmt.c
	197c197
	< 			col += utflen(w[i]->text);
	---
	> 			col += strlen(w[i]->text);
	203c203
	< 			if(col+nsp+utflen(w[i]->text) > extraindent+length)
	---
	> 			if(col+nsp+strlen(w[i]->text) > extraindent+length)
	home% 


here's an example:

This is utf text formatted with the stock fmt:

  Зарегистрируйтесь сейчас на Десятую
  Международную Конференцию по Unicode,
  которая состоится 10-12 марта 1997 года в
  Майнце в Германии.  

This is utf text formatted with the new fmt:

  Зарегистрируйтесь сейчас на Десятую Международную Конференцию по
  Unicode, которая состоится 10-12 марта 1997 года в Майнце в
  Германии.  

Note that the russian text above appears to be formatted longer than
this english text.  That is due to the default cyrillic fonts being
used in acme rendered slightly larger, even the fixed-size ones.  If
you use something completely fixed-size such as
/lib/font/bit/10646/7x13/7x13.font you'll find that the texts are of
proper length :)

cheers, andrey

ps: the patch(1) system isn't operational still..
  
pps: a similar change may be required for cb(1), but since most code
is written in plain english I doubt it's that necessary.