Add support for font families `T' and `H'.

* font/devdvi/HBI: New file.
* font/devdvi/B: Renamed to ...
* font/devdvi/TB: This.
* font/devdvi/BI: Renamed to ...
* font/devdvi/TBI: This.
* font/devdvi/I: Renamed to ...
* font/devdvi/TI: This.
* font/devdvi/R: Renamed to ...
* font/devdvi/TR: This.
* font/devdvi/H: Renamed to ...
* font/devdvi/HR: This.
* font/devdvi/Makefile.sub (DEVFILES): Updated.
* font/devdvi/generate/Makefile (FONTS): Updated.
(R, I, B, BI, H): Renamed to ...
(TR, TI, TB, TBI, HR): This, respectively.
* NEWS, src/devices/grodvi/grodvi.man: Updated.
* font/devdvi/DESC.in: Don't mount R, I, B, BI, and CWI.
Add `styles' and `family' keywords.
* tmac/dvi.tmac: Alias `H' to `HR'.
Add some fspecial requests for italic fonts.
Add TR and TI as special.
Add support for `_' with font CWI.

* src/roff/troff/number.cc (parse_expr): Add missing `break' for
operator `:'.  Until now, the expression `0:1' would return 2
instead of 1.

1 files changed, 170 insertions, 10 deletions

diff --git a/src/devices/grodvi/grodvi.man b/src/devices/grodvi/grodvi.man
index a4488ce7..fd3b16df 100644
--- a/src/devices/grodvi/grodvi.man
+++ b/src/devices/grodvi/grodvi.man
@@ -1,5 +1,5 @@
 .ig
-Copyright (C) 1989-2000, 2001 Free Software Foundation, Inc.
+Copyright (C) 1989-2000, 2001, 2002 Free Software Foundation, Inc.
 
 Permission is granted to make and distribute verbatim copies of
 this manual provided the copyright notice and this permission notice
@@ -16,6 +16,8 @@ versions, except that this permission notice may be included in
 translations approved by the Free Software Foundation instead of in
 the original English.
 ..
+.
+.
 .ie t .ds tx T\h'-.1667m'\v'.224m'E\v'-.224m'\h'-.125m'X
 .el .ds tx TeX
 .\" Like TP, but if specified indent is more than half
@@ -24,9 +26,13 @@ the original English.
 .ie \\n(.$=0:((0\\$1)*2u>(\\n(.lu-\\n(.iu)) .TP
 .el .TP "\\$1"
 ..
+.
+.
 .TH GRODVI @MAN1EXT@ "@MDATE@" "Groff Version @VERSION@"
 .SH NAME
 grodvi \- convert groff output to TeX dvi format
+.
+.
 .SH SYNOPSIS
 .B grodvi
 [
@@ -41,13 +47,17 @@ grodvi \- convert groff output to TeX dvi format
 .PP
 It is possible to have whitespace between a command line option and its
 parameter.
+.
+.
 .SH DESCRIPTION
 .B grodvi
 is a driver for
 .B groff
 that produces \*(tx dvi format.
+.
 Normally it should be run by
 .BR groff\ \-Tdvi .
+.
 This will run
 .BR @g@troff\ \-Tdvi ;
 it will also input the macros
@@ -56,115 +66,265 @@ if the input is being preprocessed with
 .B @g@eqn
 it will also input
 .BR @FONTDIR@/devdvi/eqnchar .
+.
 .LP
 The dvi file generated by
 .B grodvi
 can be printed by any correctly-written dvi driver.
+.
 The troff drawing primitives are implemented
 using the tpic version 2 specials.
+.
 If the driver does not support these, the
-.B \eD
+.B \[rs]D
 commands will not produce any output.
+.
 .LP
 There is an additional drawing command available:
+.
 .TP
-.BI \eD'R\  dh\ dv '
+.BI \[rs]D'R\  dh\ dv '
 Draw a rule (solid black rectangle), with one corner
 at the current position, and the diagonally opposite corner
 at the current position 
 .RI +( dh , dv ).
-Afterwards the current position will be at the opposite corner.  This
-produces a rule in the dvi file and so can be printed even with a
+.
+Afterwards the current position will be at the opposite corner.
+.
+This produces a rule in the dvi file and so can be printed even with a
 driver that does not support the tpic specials unlike the other
-.B \eD
+.B \[rs]D
 commands.
+.
 .LP
 The groff command
-.BI \eX' anything '
+.BI \[rs]X' anything '
 is translated into the same command in the dvi file as would be
 produced by
-.BI \especial{ anything }
+.BI \[rs]special{ anything }
 in \*(tx;
-.I anything may not contain a newline.
+.I anything
+may not contain a newline.
+.
 .LP
 Font files for
 .B grodvi
 can be created from tfm files using
 .BR tfmtodit (@MAN1EXT@).
+.
 The font description file should contain the following
 additional commands:
+.
 .Tp \w'\fBinternalname'u+2n
 .BI internalname\   name
 The name of the tfm file (without the
 .B .tfm
 extension) is
 .IR name .
+.
 .TP
 .BI checksum\  n
 The checksum in the tfm file is
 .IR n .
+.
 .TP
 .BI designsize\  n
 The designsize in the tfm file is
 .IR n .
+.
 .LP
 These are automatically generated by
 .B tfmtodit.
+.
 .LP
 In
 .B troff
 the
-.B \eN
+.B \[rs]N
 escape sequence can be used to access characters by their position
 in the corresponding tfm file;
 all characters in the tfm file can be accessed this way.
+.
+.
 .SH OPTIONS
 .TP
 .B \-d
 Do not use tpic specials to implement drawing commands.
+.
 Horizontal and vertical lines will be implemented by rules.
+.
 Other drawing commands will be ignored.
+.
 .TP
 .B \-v
 Print the version number.
+.
 .TP
 .BI \-w n
 Set the default line thickness to
 .I n
 thousandths of an em. 
+.
 .TP
 .BI \-F dir
 Prepend directory
 .IB dir /devdvi
 to the search path for font and device description files.
+.
+.
+.SH USAGE
+There are styles called
+.BR R ,
+.BR I ,
+.BR B ,
+and
+.B BI
+mounted at font positions 1 to 4.
+The fonts are grouped into families
+.B T
+and
+.B H
+having members in each of these styles:
+.
+.de FT
+.if '\\*(.T'dvi' .ft \\$1
+..
+.
+.RS
+.TP
+.B TR
+.FT TR
+CM Roman (cmr10)
+.FT
+.
+.TP
+.B TI
+.FT TI
+CM Text Italic (cmti10)
+.FT
+.
+.TP
+.B TB
+.FT TB
+CM Bold Extended Roman (cmbx10)
+.FT
+.
+.TP
+.B TBI
+.FT TBI
+CM Bold Extended Text Italic (cmbxti10)
+.FT
+.
+.TP
+.B HR
+.FT HR
+CM Sans Serif (cmss10)
+.FT
+.
+.TP
+.B HI
+.FT HI
+CM Slanted Sans Serif (cmssi10)
+.FT
+.
+.TP
+.B HB
+.FT HB
+CM Sans Serif Bold Extended (cmssbx10)
+.FT
+.
+.TP
+.B HBI
+.FT HBI
+CM Slanted Sans Serif Bold Extended (cmssbxo10)
+.FT
+.RE
+.
+.LP
+There are also the following fonts which are not members of a family:
+.
+.RS
+.TP
+.B CW
+CM Typewriter Text (cmtt10)
+.FT CW
+.FT
+.
+.TP
+.B CWI
+CM Italic Typewriter Text (cmitt10)
+.FT CWI
+.FT
+.RE
+.
+.LP
+Special fonts are
+.B MI
+(cmmi10),
+.B S
+(cmsy10), 
+.B EX
+(cmex10),
+and, perhaps surprisingly,
+.BR TR ,
+.BR TI ,
+and
+.BR CW ,
+due to the different font encodings of text fonts.
+.
+For italic fonts,
+.B CWI
+is used instead of
+.BR CW .
+.
+.LP
+Finally, the symbol fonts of the American Mathematical Society are available
+as special fonts
+.B SA
+(msam10) and
+.B SB
+(msbm10).
+.
+These two fonts are not mounted by default.
+.
+.
 .SH FILES
 .TP
 .B @FONTDIR@/devdvi/DESC
 Device description file.
+.
 .TP
 .BI @FONTDIR@/devdvi/ F
 Font description file for font
 .IR F .
+.
 .TP
 .B @MACRODIR@/dvi.tmac
 Macros for use with
 .BR grodvi .
+.
+.
 .SH BUGS
 Dvi files produced by
 .B grodvi
 use a different resolution (57816 units per inch) to those produced by
 \*(tx.
+.
 Incorrectly written drivers which assume the resolution used by \*(tx,
 rather than using the resolution specified in the dvi file will not
 work with
 .BR grodvi .
+.
 .LP
 When using the
 .B \-d
 option with boxed tables,
 vertical and horizontal lines can sometimes protrude by one pixel.
+.
 This is a consequence of the way \*(tx requires that the heights
 and widths of rules be rounded.
+.
+.
 .SH "SEE ALSO"
 .BR tfmtodit (@MAN1EXT@),
 .BR groff (@MAN1EXT@),