Erwin Waterlander schreef, Op 24-9-2013 22:01:
Hi,
As far as I see it, on Cygwin it is assumed that man pages are encoded
in Latin-1 (ISO-8859-1).
For instance the man pages of vim.
/usr/share/man/fr/vim.1.gz is encoded in Latin-1.
$ export LANG=fr_FR.UTF-8
$ man vim
This will show the French man page correctly. Latin-1 is converted to
UTF-8.
For the Russian translation of the vim manual I see two files:
/usr/share/man/ru.UTF-8/man1/vim.1.gz
/usr/share/man/ru.KOI8-R/man1/vim.1.gz
When I type
$ export LANG=ru_RU.UTF-8
$ man vim
I get the English man page, instead of the Russian man page.
I think because there is no /usr/share/man/ru/man1/vim.1.gz present.
The problem is here that man looks for the manual in these directories
in this order:
/usr/share/man/ru_RU.UTF-8
/usr/share/man/ru_RU
/usr/share/man/ru
All three paths are not present on Cygwin.
I could set LANG to ru.UTF-8, but this is not common practice. Normally
you set LANG to ru_RU.UTF-8. Therefore I think that the non-Latin1
folders under /usr/share/man have the wrong name.
When I set LANG to ru.UTF-8, man finds the Russian man page, but
displays it wrongly. Even when I fix the NROFF line in /etc/man.conf.
Moving /usr/share/man/ru.UTF-8 to /usr/share/man/ru_RU.UTF-8 (and fixing
man.conf) makes the man page display properly. This confirms that the
non-latin1 directories have the wrong name in Cygwin.
When I type
$ export LANG=ru_RU.UTF-8
$ export LANGUAGE=ru.UTF-8
$ man vim
The Russian man page is displayed, but all Russian characters are
wrongly displayed.
I think because it is assumed the man page is in Latin-1.
To get a correct display of the Russian man page I need to change
/etc/man.config
I change the line with NROFF to:
NROFF /usr/bin/preconv | /usr/bin/nroff -c -mandoc 2>/dev/null
Now the Russian man page displays correctly, but now all the Latin-1
pages display wrongly.
This can be fixed by adding a coding tag to the first or second line of
the man page, which is understood by preconv.
When I set LANG to fr_FR.UTF-8, move /usr/share/man/fr.UTF-8 to
/usr/share/man/fr_FR.UTF-8, and add this tag to vim.1
.\" -*- coding: latin-1; -*-
The French manual displays properly.
So I undo my change in /etc/man.conf
On Linux the trend is to convert all man pages to UTF-8 encoding.
Will Cygwin follow this trend?
The following needs to be done in Cygwin to have man pages for all
scripts displayed properly out of the box (assuming an UTF-8 locale and
use of mintty):
* Rename the non-latin1 directories under /usr/share/man/ to
fr_FR.UTF-8, ru_RU.UTF-8, and so on.
* Change /etc/man.conf to use preconv:
NROFF /usr/bin/preconv | /usr/bin/nroff -c -mandoc 2>/dev/null
* Convert all Latin-1 coded man pages to UTF-8, or add a latin-1 coding
tag on the first line.
regards,
--
Erwin Waterlander
http://waterlan.home.xs4all.nl/
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