Re: [PATCH] charmap.5: update to match current glibc

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Hi Marko,

On 06/04/2014 07:53 AM, Marko Myllynen wrote:
> Hi,
> 
> charmap(5) hadn't been updated for years, let's make it helpful again.

Looks good to me. Applied.

Thanks for the patch!

Cheers,

Michael


>>From 925c36aefc0a46ce1892039a95fa9a0151018705 Mon Sep 17 00:00:00 2001
> From: Marko Myllynen <myllynen@xxxxxxxxxx>
> Date: Mon, 2 Jun 2014 16:37:43 +0300
> Subject: [PATCH] charmap.5: update to match current glibc
> 
> charmap(5) was outdated, bring it to closer to reality by fixing
> syntax description to match current glibc code and practices, add
> missing options, remove obsolete comments and references, and
> remove now incorrect examples.
> ---
>  man5/charmap.5 |  156 +++++++++++++++++++++++++-------------------------------
>  1 files changed, 70 insertions(+), 86 deletions(-)
> 
> diff --git a/man5/charmap.5 b/man5/charmap.5
> index cc95f4a..9b78fca 100644
> --- a/man5/charmap.5
> +++ b/man5/charmap.5
> @@ -1,5 +1,3 @@
> -.\" This file is part of locale(1) which displays the settings of the
> -.\" current locale.
>  .\" Copyright (C) 1994  Jochen Hein (Hein@xxxxxxxxxxxxxxxxxxxxxxx)
>  .\"
>  .\" %%%LICENSE_START(GPLv2+_SW_3_PARA)
> @@ -18,112 +16,98 @@
>  .\" <http://www.gnu.org/licenses/>.
>  .\" %%%LICENSE_END
>  .\"
> -.TH CHARMAP 5 1994-11-28 "" "Linux User Manual"
> +.TH CHARMAP 5 2014-06-02 "GNU" "Linux Programmer's Manual"
>  .SH NAME
> -charmap \- character symbols to define character encodings
> +charmap \- characters to define character sets
>  .SH DESCRIPTION
> -A character set description (charmap) defines a character set of
> -available characters and their encodings.
> -All supported character
> -sets should have the
> -.B portable character set
> -as a proper subset.
> -.\" Not true anymore:
> -.\" The portable character set is defined in the file
> -.\" .I /usr/lib/nls/charmap/POSIX
> -.\" .I /usr/share/i18n/charmap/POSIX
> -.\" for reference purposes.
> +A character set description (charmap) defines all available characters
> +and their encodings in a character set.
> +All ISO C compliant character sets should have
> +the ASCII character set as a proper subset.
>  .SS Syntax
> -The charmap file starts with a header, that may consist of the
> +The charmap file starts with a header that may consist of the
>  following keywords:
>  .TP
> -.I <codeset>
> -is followed by the name of the codeset.
> +.I <code_set_name>
> +is followed by the name of the character map.
> +.TP
> +.I <comment_char>
> +is followed by a character that will be used as the comment character
> +for the rest of the file.
> +It defaults to the number sign (#).
> +.TP
> +.I <escape_char>
> +is followed by a character that should be used as the escape character
> +for the rest of the file to mark characters that should be interpreted
> +in a special way.
> +It defaults to the backslash (\\).
>  .TP
>  .I <mb_cur_max>
> -is followed by the max number of bytes for a multibyte-character.
> -Multibyte characters are currently not supported.
> -The default value
> -is 1.
> +is followed by the maximum number of bytes for a character.
> +The default value is 1.
>  .TP
>  .I <mb_cur_min>
> -is followed by the min number of bytes for a character.
> -This
> -value must be less than or equal than
> -.BR mb_cur_max .
> +is followed by the minimum number of bytes for a character.
> +This value must be less than or equal than
> +.IR mb_cur_max .
>  If not specified, it defaults to
> -.BR mb_cur_max .
> -.TP
> -.I <escape_char>
> -is followed by a character that should be used as the
> -escape-character for the rest of the file to mark characters that
> -should be interpreted in a special way.
> -It defaults to
> -the backslash (
> -.B \\\\
> -).
> -.TP
> -.I <comment_char>
> -is followed by a character that will be used as the
> -comment-character for the rest of the file.
> -It defaults to the
> -number sign (
> -.B #
> -).
> +.IR mb_cur_max .
>  .PP
> -The charmap-definition itself starts with the keyword
> +The character set definition section starts with the keyword
>  .B CHARMAP
> -in column 1.
> +in the first column.
> 
>  The following lines may have one of the two following forms to
> -define the character-encodings:
> +define the character set:
>  .TP
> -.I <symbolic-name> <encoding> <comments>
> -This form defines exactly one character and its encoding.
> +.I <character> <byte-sequence> <comment>
> +This form defines exactly one character and its byte sequence,
> +.I <comment>
> +being optional.
>  .TP
> -.I <symbolic-name>...<symbolic-name> <encoding> <comments>
> -This form defines a couple of characters.
> -This is useful only for
> -multibyte-characters, which are currently not implemented.
> +.I <character>..<character> <byte-sequence> <comment>
> +This form defines a character range and its byte sequence,
> +.I <comment>
> +being optional.
>  .PP
> -The last line in a charmap-definition file must contain
> -.B END CHARMAP.
> -.SS Symbolic names
> -A
> -.B symbolic name
> -for a character contains only characters of the
> -.B portable character set.
> -The name itself is enclosed between angle brackets.
> -Characters following an
> -.B <escape_char>
> -are interpreted as itself; for example, the sequence
> -.B "<\\\\\\\\\\\\>>"
> -represents the symbolic name
> -.B "\\\\>"
> -enclosed in angle brackets.
> -.SS Character encoding
> -The
> -encoding may be in each of the following three forms:
> -.TP
> -.I <escape_char>d<number>
> -with a decimal number
> +The character set definition section ends with the string
> +.IR "END CHARMAP" .
> +.PP
> +The character set definition section may optionally be followed by a
> +section to define widths of characters.
> +.PP
> +The width section starts with the keyword
> +.B WIDTH
> +in the first column.
> +
> +The following lines may have one of the two following forms to
> +define the widths of the characters:
>  .TP
> -.I <escape_char>x<number>
> -with a hexadecimal number
> +.I <character> <width>
> +This form defines the width of exactly one character.
>  .TP
> -.I <escape_char><number>
> -with an octal number.
> -.\" FIXME comments
> -.\" FIXME char ... char
> +.I <character>...<character> <width>
> +This form defines the width for all the characters in the range.
> +.PP
> +The width definition section ends with the string
> +.IR "END WIDTH" .
>  .SH FILES
> -.I /usr/share/i18n/charmaps/*
> -.\" .SH AUTHOR
> -.\" Jochen Hein (jochen.hein@xxxxxxxxxxxxxxxxx)
> +.TP
> +.I /usr/share/i18n/charmaps
> +Usual default character map path.
>  .SH CONFORMING TO
>  POSIX.2.
> +.SH EXAMPLE
> +The Euro sign is defined as follows in the
> +.I UTF\-8
> +charmap:
> +.PP
> +.nf
> +<U20AC>     /xe2/x82/xac
> +.fi
>  .SH SEE ALSO
> +.BR iconv (1),
>  .BR locale (1),
>  .BR localedef (1),
> -.BR localeconv (3),
> -.BR setlocale (3),
> -.BR locale (5)
> +.BR locale (5),
> +.BR charsets (7)
> --
> 1.7.1
> 
> Thanks,
> 


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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