BSD 4_3_Net_2 development

[unix-history] / usr / src / usr.bin / groff / ChangeLog

Wed Mar 13 12:49:40 1991  James Clark  (jjc at jclark)

	* Version 1.01 released. 

	* dvi/devdvi/CompileFonts: Add cm*ss10 fonts.

	* dvi/tmac.dvi: ftr HR to H.

	* macros/tmac.e: Round up computation of $r.

	* xditview/tmac.X:  Don't give up completely in compatibility mode.
	Use \n(.s instead of \n[.s].

	* dvi/tmac.dvi: Don't give up completely in compatibility mode.
	Use \(ci instead of \[ci]. Use \n(.s instead of \n[.s].
	Add u to factors inside \s[...]. Rename frac to dvi-frac.
	Translate \(FM onto \[prime] and \(!/ onto \[slashnot]; use these
	short names in the char definitions.

	* ps/tmac.ps: Don't give up completely in compatibility mode.
	Fix the fraction definitions to use \n(.s and \(f/. Add an extra
	quote in front of \n(.s. Add u to factors inside \s[...].

Mon Mar 11 12:01:20 1991  James Clark  (jjc at jclark)

	* tty/tmac.tty: Call the nroff request.

	* macros/tmac.e ((x, )x):  Better definitions that work properly
	in a diversion.
	(@0, @1): Helper macros for (x.

	* macros/tmac.e ($s, hl): Use \l rather than \D.

	* tty/tmac.tty: Make it work better in compatibility mode.
	(pchar): Rename to tty-char.

	* macros/tmac.e (@E): New macro.
	(r, i, b, rb, bi): Use @E.

	* macros/tmac.e (@F): Don't use (;...) syntax.

	* macros/tmac.e: Remove mention of \*(||/revisions.  Mention that
	it was modified for groff.

	* macros/tmac.e: Make sure \n(ps and \n(es are >= \n(.V.

	* macros/tmac.e (<., .>): Removed.
	([., .]): If \n(.V>=1v, use [] instead of superscripting.

	* macros/tmac.e: Remove check that groff is being used.

	* macros/tmac.e (@C): Change families only if using groff; turn
	compatibility mode off while changing familes. Save compatibility
	mode before changing families and restore it afterwards.

	* macros/tmac.e (@h): Remove test for offset + line length.

	* macros/tmac.e (sorry): Rename to @S.  Use \$1 instead of \$0
	(lo, th, ac): Define to call @S instead of using als.

	* macros/tmac.e: Make $r and $R now contain \n(.v*100/\n(.sp, ie
	the ratio of the vertical spacing to the point size in units
	expressed as a percentage.  Use these instead of $10r and $10R,
	Delete $10r and $10R.

	* lib/font.c (font::load): In default computation of space_width,
	divide by sizescale.  Use scale_round.

	* macros/tmac.an (TP): Don't call `nf'.
	(an-do-tag): Don't call `fi'.

Sun Mar 10 09:52:35 1991  James Clark  (jjc at jclark)

	* troff/input.c (process_input_stack): Handle the case where
	spaces at the beginning of an input line are followed by a
	newline.

Thu Mar  7 20:18:07 1991  James Clark  (jjc at jclark)

	* groff.c (device_table): Add PIC_X_OPTION for dvi device.
	* groff.sh: Use pic -x with the dvi device.

	* dvi/devdvi/FontMakefile (H): Don't use -s.

	* dvi/devdvi/HI, dvi/devdvi/HB: New files.
	* dvi/devdvi/Makefile: Add HI and HB to FONTS.
	* dvi/devdvi/FontMakefile: Add rules for HI and HB. Include these
	in FONTS.

Mon Mar  4 13:20:14 1991  James Clark  (jjc at jclark)

	* ps/psfig.diff: New file.
	* ps/tmac.psfig: New file.

Sat Mar  2 00:15:09 1991  James Clark  (jjc at jclark)

	* macros/tmac.s (]=, ref*do-tl, ref*bib-print): Deleted.
	(]-): Don't call ref*do-tl.

	* macros/tmac.s (ref*end-print): Use XP if [F not defined.

	* macros/tmac.s (ref*normal-print): Call FS rather than fn@do-FS.
	(fn@do-FS): Rename to fn*do-FS.

	* troff/input.c (transparent_translate): New function.
	(process_input_stack): Apply transparent_translate before calling
	diversion::transparent_output(unsigned char).

Wed Feb 27 00:13:25 1991  James Clark  (jjc at jclark)

	* troff/input.c (do_define_macro): Define the macro before calling
	skip_line.

	* xditview/Makefile: Add DEVICES variable.  Change install target
	to use this.

Tue Feb 26 10:46:22 1991  James Clark  (jjc at jclark)

	* groff.c (run_commands): Handle the possibility that there are
	child processes other than those forked by us.

Sun Feb 24 21:32:30 1991  James Clark  (jjc at jclark)

	* lib/string.c (string::append): New function.
	* lib/stringclass.h: Declare it.

Thu Feb 21 11:49:26 1991  James Clark  (jjc at jclark)

	* eqn/main.c (main): New option -N which sets
	no_newline_in_delim_flag. 
	(do_file): If no_newline_in_delim_flag is set don't allow newlines
	in delimiters.
	* groff.c (main): Pass -N on to eqn.
	(help, synopsis): Mention -N.
	* groff.sh: Implement -N.

Wed Feb 20 15:16:10 1991  James Clark  (jjc at jclark)

	* macros/tmac.s (]=, ref*bib-print, ref*do-tl): New macros.
	(]-): Call ref*do-tl if ref*need-tl is non-zero.
	(XP): Allow as initializer.

Tue Feb 19 14:09:06 1991  James Clark  (jjc at jclark)

	* troff/env.c (environment::wrap_up_field): If field_spaces are
	non-zero and we have a current_tab, subtract padding from
	tab_distance.  If this makes tab_distance <= 0, use the next tab
	stop instead.  If there isn't any next tab or it's a left tab,
	wrap up the current tab.
	(environment::start_field): Initialize tab_precedes_field.
	(environment::wrap_up_tab): If there's a current field, update
	pre_field_width, field_distance and tab_precedes_field.
	* troff/env.h (environment::tab_precedes_field): New member.

Fri Feb 15 01:24:00 1991  James Clark  (jjc at jclark)

	* ps/ps.c (ps_printer::do_file): New function.
	(ps_printer::special): Bind to `file' special.
	(ps_printer::do_exec): Set ndefined_styles to 0.

Sat Feb  9 03:03:04 1991  James Clark  (jjc at jclark)

	* eqn/text.c (split_text): Grok \* and similar escapes sequences.
	Avoid stripping first character from the start of unrecognized
	escapes.  Use lex_error instead of error to report errors.
	* eqn/lex.c (get_token): Rework handling of escapes.
	(lex_error): Move declaration into...
	* eqn/eqn.h.

	* xditview/xditview.c (main): Make -page option work.

	* Makefile: Correct comment about -DBROKEN_SPOOLER and pageview.

Wed Feb  6 12:28:43 1991  James Clark  (jjc at jclark)

	* macros/tmac.s (B2): Correct size of box.

Tue Feb  5 00:37:35 1991  James Clark  (jjc at jclark)

	* macros/tmac.s (B2): Postpone drawing the box until in the
	top-level diversion.

	* tty/tmac.tty: Add font translations for C, CR, CW.

	* groff.c (synopsis, help): Document -i.
	* groff.sh: Implement -i.

	* macros/tmac.s (@NH): Put a `.' after multi-part numbers.
	Simplify the construction of SN.

	* troff/number.c (parse_term): Give `|' a higher precedence.
	* tbl/table.c (numeric_text_entry::simple_print): Parenthesise
	accordingly.

	* macros/tmac.s (B2): Use par@finish instead of par@reset.

Mon Feb  4 12:36:09 1991  James Clark  (jjc at jclark)

	* lib/string.c (string::move): New function.
	* lib/stringclass.h: Declare it.

Sat Feb  2 16:02:16 1991  James Clark  (jjc at jclark)

	* troff/env.c (distribute_space): Add optional argument
	`force_forward'.
	(environment::wrap_up_field): Call distribute_space with
	`force_forward' argument of 1.

Fri Feb  1 19:36:33 1991  James Clark  (jjc at jclark)

	* lib/string.c, lib/stringclass.h (string::operator+=(char)):
	Inline it.  Move reallocation into...
	(string::grow1): New function.
	* pic/Makefile, tbl/Makefile, eqn/Makefile, ps/Makefile: Redo
	dependencies to include library header files.
	* lib/Makefile: Make string.c and lf.c depend on stringclass.h.

Thu Jan 31 15:02:27 1991  James Clark  (jjc at jclark)

	* macros/tmac.s (@NH): Use the same number registers than -ms does
	for the heading level counters.  Use the same string that -ms does
	for the number for this heading.

Wed Jan 30 14:25:40 1991  James Clark  (jjc at jclark)

	* lib/new.c (operator new): Cast result of malloc to char *.

	* troff/input.c (spring_trap, lookup_request): Add assert that nm
	is not null.

Tue Jan 29 18:08:05 1991  James Clark  (jjc at jclark)

	* groff.c (main): Support -i.

Sun Jan 27 13:23:17 1991  James Clark  (jjc at jclark)

	* pic/pic.h: Include <osfcn.h>.

	* ps/ps.c: Add declaration of mktemp.

	* Makefile: Add -DHAVE_UNION_WAIT option for CPPDEFINES.
	* groff.c: If HAVE_UNION_WAIT is defined, declare wait()'s
	argument as union wait *.
	(run_commands): If HAVE_UNION_WAIT is defined cast wait()'s
	argument to union wait *.

Sat Jan 26 12:04:52 1991  James Clark  (jjc at jclark)

	* tty/tmac.tty: Add definition of \(co.

	* pic/object.c (make_arc): Only increase radius when radius
	strictly less than d.
	(arc_object::update_bounding_box): May need to add 4.0 to end_quad
	more than once.

	* troff/env.c (environment::environment(symbol),
	environment::environment(const environment *)):  Initialize
	input_trap_count.

Sat Jan 19 08:18:35 1991  James Clark  (jjc at jclark)

	* tbl/main.c (main): Add exit(0).

	* ps/ps.c (ps_printer::~ps_printer): Use fseek instead of rewind.

	* pic/main.c (main):
	* eqn/main.c (main):
	* tbl/main.c (main):
	* etc/soelim.c (main):
	* driver/printer.c (printer::~printer):
	* troff/node.c (real_output_file::~real_output_file,
	real_output_file::flush):  Check for errors on stdout.

	* most files: Add 1991 to copyright notice.

	* macros/tmac.s: Don't test \n(.x and \n(.y.

	* troff/input.c (token::next): Rename `escape_char' label to
	`handle_escape_char' and `normal_char' label to
	`handle_normal_char'.

Thu Jan 17 15:46:35 1991  James Clark  (jjc at jclark)

	* groff.c (main, synopsis, help): Support -a option.
	* groff.sh: Likewise.  Also eliminate Zflag variable by adding -z
	to trflags while parsing options.

Tue Jan 15 13:07:27 1991  James Clark  (jjc at jclark)

	* troff/number.c (parse_term): With `m', `M' and `n' scale
	indicators, convert scale factor to hunits before scaling.

Mon Jan 14 12:39:12 1991  James Clark  (jjc at jclark)

	* lib/font.c (scale_round): Better test for overflow when n is
	negative.

Thu Jan 10 11:10:56 1991  James Clark  (jjc at jclark)

	* tbl/main.c (process_format): Add second argument of type
	options*. Change callers.  Allow opt->tab_char as well as '\t'
	between format items.

Mon Jan  7 12:30:18 1991  James Clark  (jjc at jclark)

	* macros/tmac.an (PD): With no arguments, make sure register PD is
	at least \n[.V].
	(TH): Call PD with no argument, instead of setting register PD
	directly.

Sun Jan  6 11:18:39 1991  James Clark  (jjc at jclark)

	* Version 1.00 released.

Sat Jan  5 08:44:30 1991  James Clark  (jjc at jclark)

	* ps/tmac.ps, xditview/tmac.X: Add font translation of C to CR.

	* dvi/devdvi/DESC: Mount CW instead of CR.

	* dvi/tmac.dvi: Add definition of \(tm.

	* dvi/devdvi/texsy.map: Add lh, and rh.
	* dvi/devdvi/texex.map: Add lt, rt, lb, rb, lk, rk.
	* dvi/devdvi/texmi.map: Add *o. Regenerate fonts.

	* dvi/devdvi/FontMakefile: Generate H from cmss10.
	* dvi/devdvi/Makefile: Install H.
	* dvi/devdvi/H: New file.

Fri Jan  4 15:04:57 1991  James Clark  (jjc at jclark)

	* troff/env.c (vertical_spacing): Don't allow vertical spacing to
	be 0.

Thu Jan  3 13:41:19 1991  James Clark  (jjc at jclark)

	* macros/tmac.s (@EN): Add \n(.V to the argument to ds@need.

	* macros/tmac.pic (PS): Avoid attempting to set negative indent.

	* macros/tmac.s (@EN): Handle the case where the equation is empty
	but the label is not.

Wed Jan  2 10:31:44 1991  James Clark  (jjc at jclark)

	* troff/groff.h: New warning category WARN_SPACE.
	* troff/input.c: Add WARN_SPACE to DEFAULT_WARNING_MASK. Add
	WARN_SPACE to warning_table.
	(interpolate_macro): Give a warning of type WARN_SPACE if the name
	is longer than two characters and is not defined, but the first
	two characters do make a defined name.

	* PROBLEMS: New file.

	* CHANGES: New file.
	* README-0.6, README-1.00: Deleted.

	* groff.c, groff.sh: Add X75-12 and X100-12 devices.
	* xditview/devX75/Makefile: Make devX75-12.
	* xditview/devX100/Makefile: Make devX100-12.

	* xditview/devX100/eqnchar, xditview/devX75/eqnchar,
	dvi/devdvi/eqnchar, ps/devps/eqnchar: Remove use of \R.

Tue Jan  1 19:24:01 1991  James Clark  (jjc at jclark)

	* README-0.7: Rename to README-1.00.

	* macros/tmac.pic: New file.
	* macros/Makefile (install.nobin): Install tmac.pic.

Mon Dec 31 10:40:53 1990  James Clark  (jjc at jclark)

	* troff/env.c (hyphen_word): Correct the test for whether the
	token is a hyphen.  Reset npos to 0.

	* macros/tmac.s (par@sup-start, par@sup-end): New implementations.

Sun Dec 30 15:53:13 1990  James Clark  (jjc at jclark)

	* macros/tmac.s (ds*common-end): Call par*reset.
	(PE): Likewise.
	(par@reset-indent): Deleted.

	* macros/tmac.s (@IP): Divert the label.

Sat Dec 29 14:33:32 1990  James Clark  (jjc at jclark)

	* xditview/draw.c (setGC): Use a line width of .1m rather than
	.04m by default; round rather than truncate value.

	* tbl/table.c (class empty_entry): New class.
	(empty_entry::empty_entry, empty_entry::line_type): New functions.
	(table::add_entry): Represent empty entries by objects of type
	empty_entry.
	(table_entry::line_type): Return -1.
	(table::determine_row_type): Ignore entries with line_type 0.
	Treat type -1 as non-lines.

Fri Dec 28 15:04:41 1990  James Clark  (jjc at jclark)

	* ps/devps/textmap, xditview/libXdvi/DviChar.c, tty/devlatin1/R.proto,
	macros/tmac.s: Rename \(-d to \(Sd.

Thu Dec 27 12:35:47 1990  James Clark  (jjc at jclark)

	* ps/devps/textmap: Add `sd', `/_' and `3d' characters.
	* xditview/libXdvi/DviChar.c: Likewise.
	* dvi/devdvi/texsy.map: Add `<<', `>>'.

Wed Dec 26 13:33:23 1990  James Clark  (jjc at jclark)

	* troff/div.c (top_level_diversion::begin_page): Call
	init_output() if the_output is 0.

Sat Dec 22 12:35:29 1990  James Clark  (jjc at jclark)

	* troff/input.c: Replace ESCAPE_E by ESCAPE_e and ESCAPE_C by
	ESCAPE_c.
	(get_copy): Turn \E into ESCAPE_E.
	(token::process, asciify): Handle ESCAPE_E.

	* macros/tmac.s (ds*common-end, par@reset): Add `.rj 0'.
	(RD): New macro.
	(DS): Implement `.DS R'.

Fri Dec 21 11:41:53 1990  James Clark  (jjc at jclark)

	* macros/tmac.s (FS): New macro.

	* macros/tmac.s (fn@do-FS): Use @LP instead of LP.

	* macros/tmac.s (cov*tl-init): Remove after first execution
	instead of aliasing to @nop.  Call top of page macro explicitly
	instead of setting trap; call @init first.  Set pg@top as top of
	page macro.
	(cov*auto-init): Deleted.  Set cov*tl-init instead of
	cov*auto-init as top of page trap. 
	(TL, LP): Do a break instead of calling cov*tl-init.
	(cov*print): With RP format but no TL, alias FS and FE to @FS and
	@FE; in this case also give a warning and always start another
	page. No need to set pg@top here.
	(cov*tl-init): Rename to cov*first-page-init.

	* macros/tmac.s (RP): Do `.pn 0'.
	(cov*tl-init): With RP format don't do `.pn 0'.

	* macros/tmac.s (pg@cs-top): Set no space mode.

	* macros/tmac.s (par@TL, par@AU, par@AI): New macros.
	(cov*ab-init): Alias TL, AU and AI to these.

Thu Dec 20 10:10:50 1990  James Clark  (jjc at jclark)

	* macros/tmac.s (@EQ): Move the space before the equation into @EN
	(@EN): Do nothing unless \n[dl] is > 0.

Tue Dec 18 12:20:47 1990  James Clark  (jjc at jclark)

	* pic/object.c (ellipse_object::radius): New function.

	* VERSION: Change version to 0.7.

	* tbl/table.c (block_entry::do_divert): Declare return type as
	void.
	(block_entry::divert, alphabetic_block_entry::divert): Return 1.

Mon Dec 17 12:30:34 1990  James Clark  (jjc at jclark)

	* troff/column.c: New file.
	* troff/Makefile: Corresponding changes.

	* troff/hvunits.c (scale(vunits, vunits, vunits)):  New function.
	Friend of vunits.

	* troff/div.c (top_level_diversion::space): If the space causes
	the first-page transition and springs a trap, truncate the space
	to 0.

Fri Dec 14 12:30:02 1990  James Clark  (jjc at jclark)

	* ps/ps.c (ps_printer::do_import): Add a `clear' after including
	the document.

	* pic/troff.c (troff_output::line_thickness,
	troff_output::set_fill): Do a horizontal motion to compensate for
	the width of the \D escape sequence.

Thu Dec 13 10:17:14 1990  James Clark  (jjc at jclark)

	* xditview/tmac.X: Reinstate definition of \(rn, but only for X100
	(not X75).

	* eqn/sqrt.c (sqrt_box::compute_metrics):  Supply missing argument
	to printf.

	* tbl/table.c (simple_entry::simply_print): Don't declare as pure.
	Supply empty definition.
	(text_entry::simple_print, simple_text_entry::simple_print):
	Delete declarations.
	(table::add_entry): Represent empty entries by objects of type
	`simple_entry'.

Wed Dec 12 08:50:48 1990  James Clark  (jjc at jclark)

	* troff/Makefile: Remove -DHYPHEN_CONTROL from DEFINES.

	* tbl/table.c (left_text_entry::add_tab): New function.

	* macros/tmac.s: Make @RT an alias for par@reset.  Make RT
	initialize like LP.

Mon Dec 10 11:19:55 1990  James Clark  (jjc at jclark)

	* troff/env.c (environment::start_field): Give an error message if
	there is no next tab.

Sun Dec  9 11:46:40 1990  James Clark  (jjc at jclark)

	* troff/env.c (hyphenate): Skip initial elements with zero
	hyphenation code.

	* macros/tmac.s (par@init): Keep VS in points rather than units.

Sat Dec  8 23:00:27 1990  James Clark  (jjc at jclark)

	* pic/main.c (main): Implement `-c' option.
	* pic/output.h: Declare make_tpic_output().
	* pic/tex.c (tex_output::set_pen_size): Make it virtual and
	protected.
	(tpic_output): New class.
	(tpic_output::tpic_output, tpic_output::set_pen_size,
	tpic_output::command, make_tpic_output): New functions.

Fri Dec  7 11:57:41 1990  James Clark  (jjc at jclark)

	* tbl/main.c (main): Call `.ab' if \n(.g is false.  Define TS/TE
	if they're not already defined.
	* tbl/table.c (init_output): Don't test \n(.g.

	* troff/input.c (do_if_request): Delete `g' condition. Recognize
	`d', `r' and `c' conditions even in compatibility mode.

Tue Dec  4 09:13:47 1990  James Clark  (jjc at jclark)

	* ps/tmac.ps (ps-bb): Protect against negative numbers in bounding
	box.

Mon Dec  3 07:18:26 1990  James Clark  (jjc at jclark)

	* troff/env.h (environment::prev_line_interrupted): New member.
	(environment::get_prev_line_interrupted): New function.
	* troff/env.c (environment::newline): Set prev_line_interrupted.
	(environment::environment(const environment *),
	environment::environment(symbol)): Initialize
	prev_line_interrupted.
	* troff/input.c (process_input_stack): Don't give special
	treatment to space and newline at the beginning of the line if the
	previous line was interrupted.

Sat Dec  1 15:48:37 1990  James Clark  (jjc at jclark)

	* eqn/eqn.y: Disallow PRIME by itself.
	* eqn/lex.c (token_table): Bind `opprime' instead of `prime' to
	PRIME.
	(def_table): Remove definition of '.  Define prime to be `.

	* eqn/eqn.y: Split off part of rule `script' into a new rule
	`nonsup'.

Fri Nov 30 10:23:44 1990  James Clark  (jjc at jclark)

	* macros/tmac.s ({, }): New string aliases.

Thu Nov 29 11:34:40 1990  James Clark  (jjc at jclark)

	* README-0.7: New file.

Wed Nov 28 10:09:57 1990  James Clark  (jjc at jclark)

	* macros/tmac.s: New file.
	* man/groff_ms.man: New file.
	* Makefile: Add definition of TMAC_S. Pass TMAC_S in SUBFLAGS.
	* Makefile.bd: Similarily.
	* man/Makefile: Add groff_ms.n to MAN7PAGES. Replace @TMAC_S@. Add
	definition of TMAC_S.
	* macros/Makefile: Add definition of TMAC_S. Install tmac.s.
	* macros/TODO: New file.

Sat Nov 24 20:04:54 1990  James Clark  (jjc at jclark)

	* troff/env.c (right_justify): New function.
	(init_env_requests): Bind this to request "rj".
	(center_lines): Set right_justify_lines to 0. If we get a bad
	integer, center 1 line.
	(environment::environment(symbol), environment::environment(const
	environment *)): Initialize right_justify_lines.
	(environment::get_right_justify_lines): New function.
	(init_env_requests): Bind this to number_register ".rj".

	* troff/env.c (environment::choose_breakpoint): Implement
	hyphenation_margin and hyphenation_space.
	(environment::get_hyphenation_space,
	environment::get_hyphenation_margin): New functions.
	(init_env_requests): Bind these to .hys and .hym.
	(hyphenation_space_request, hyphenation_margin_request): New
	functions
	(init_env_requests): Bind these to hys and hym.
	(environment::environment(symbol), environment::environment(const
	environment *)): Initialize hyphenation_margin and
	hyphenation_space.
	* troff/env.h: Corresponding changes to class environment.

Fri Nov 23 09:08:16 1990  James Clark  (jjc at jclark)

	* troff/div.c (blank_line): Always do a break.

	* eqn/box.c (do_text): Turn off escapes while appending text to
	string.

Thu Nov 22 10:58:59 1990  James Clark  (jjc at jclark)

	* troff/input.c (while_break_request, while_continue_request): New
	functions.
	(init_input_requests): Bind these to "break" and "continue".
	(while_depth, while_break_flag): New variables.
	(while_request): Update while_depth.  Break out of loop if
	while_break_flag is set.

Wed Nov 21 10:54:40 1990  James Clark  (jjc at jclark)

	* tbl/table.c (init_span_reg): Initialize span_width_reg to \n(.H
	rather than 0.

Mon Nov 19 00:45:03 1990  James Clark  (jjc at jclark)

	* Makefile: Include -DBROKEN_SPOOLER by default.  Expand comment.

	* stringify: New file.
	* Makefile (groff.o): Use stringify.

	* xditview/tmac.X: Remove definition of \(rn.
	* xditview/libXdvi/DviChar.c: Remove radicalex from
	Adobe_symbol_map.

Sat Nov 17 10:44:58 1990  James Clark  (jjc at jclark)

	* tbl/table.c (table::add_entry): Allow alphabetic text blocks.
	(alphabetic_block_entry::alphabetic_block_entry,
	alphabetic_block_entry::divert, alphabetic_block_entry::print):
	New functions.
	(block_entry::divert): Split off body into ...
	(block_entry::do_divert): If the block is alphabetic, subtract 2n
	from the line length; also update the span width to dl+2n, and the
	alphabetic span width to dl.

	* driver/input.c (do_file):  While reading argument to D command,
	when expanding buffer, multiply szp by sizeof(int) rather than 2
	in the argument to memcpy.

	* tbl/table.c (compute_span_width): Add 2n rather than 1n to the
	width of alphabetic columns.

Fri Nov 16 06:34:27 1990  James Clark  (jjc at jclark)

	* troff/node.c (lookup_family): Supply second argument to lookup.

	* troff/dictionary.c (dictionary::lookup): After an unsuccesful
	search, return immediately if v is 0.

	* pic/troff.c: Define EQN_NO_EXTRA_SPACE_REG.
	(troff_output::start_picture): Set this reg.
	(troff_output::end_picture): Remove this reg
	* eqn/box.c (box::extra_space): Don't produce `\x's if
	EQN_NO_EXTRA_SPACE_REG is defined.

	* eqn/eqn.y: Allow just a PRIME to be a `simple'.
	* eqn/text.c (split_text): Map ' to \(fm when it's the first
	character.

Thu Nov 15 10:35:06 1990  James Clark  (jjc at jclark)

	* macros/tmac.e: Use font 3 instead of B in $c. Remove `bd'
	requests.

	* troff/div.c (top_level_diversion::top_level_diversion):
	Initialize page_number to 0.

Wed Nov 14 21:41:58 1990  James Clark  (jjc at jclark)

	* groff/troff (environment::environment(const environment *)):
	Initialize name to e->name, rather than "anonymous".

Sat Nov 10 01:59:37 1990  James Clark  (jjc at jclark)

	* xditview/libXdvi/Dvi.c (ShowDvi): If eof is encountered, reset
	requested_page.  Split middle part into ...
	(FindPage): New function.
	(SetValues): If we don't yet know the last page, and the requested
	page is greater than the current page, call FindPage.
	Update the font_map_string before doing this.

	* xditview/tmac.X: Add definitions of \(sq, \(ga, \(dg and \(dd.
	Translate \(lh and \(rh into left and right double arrows.

	* troff/node.c (class hyphen_inhibitor_node): New class.
	(hyphen_inhibitor_node::hyphen_inhibitor_node,
	hyphen_inhibitor_node::copy, hyphen_inhibitor_node::same,
	hyphen_inhibitor_node::type,
	hyphen_inhibitor_node::get_hyphenation_type): New functions.
	(node::add_discretionary_hyphen): Use hyphen_inhibitor_node rather
	than dbreak_node(0, 0) to represent a `\%' at the beginning of a
	word.

Fri Nov  9 16:05:38 1990  James Clark  (jjc at jclark)

	* troff/node.h (dummy_node::get_hyphenation_type,
	transparent_dummy_node::get_hyphenation_type):  Declare them.
	* troff/node.c: (dummy_node::get_hyphenation_type,
	transparent_dummy_node::get_hyphenation_type): New functions.

Wed Nov  7 10:09:06 1990  James Clark  (jjc at jclark)

	* xditview/libXdvi/draw.c: If M_PI not defined after including
	math.h, then define it.

	* xditview/Makefile: Add definition of AR. Pass it to the submake
	in libXdvi.
	* xditview/libXdvi/Makefile: Add definitions of AR and RANLIB.

Tue Nov  6 10:14:27 1990  James Clark  (jjc at jclark)

	* troff/dictionary.h (object_dictionary::alias): Declare return
	value as int.
	* troff/dictionary.c (object_dictionary::alias): Return non-zero
	if the old name was defined.
	* troff/input.c (alias_macro): Give a warning if the old name was
	not defined.
	* troff/reg.c (alias_reg): Likewise.

Mon Nov  5 00:31:39 1990  James Clark  (jjc at jclark)

	* troff/input.c (token::next): Delete implementation of \R.

	* macros/Makefile: Strip comments from tmac.e while installing it.

	* troff/input.c: New variable `nroff_mode'.
	(troff_request, nroff_request): New functions.
	(init_input_requests): Bind `troff' and `nroff' to troff_request
	and nroff_request.
	(do_if_request): Compute results of t and n conditions from
	nroff_mode.

	* text/text.c (split_text): Fix typo in >=.

	* eqn/lex.c: Add definition of `==' to def_table.

Fri Nov  2 02:49:09 1990  James Clark  (jjc at jclark)

	* pic/tex.c (tex_output::start_picture): Change the definitions of
	\graph and \graphtemp so that they work properly with Plain TeX.

	* pic/tex.c (tex_output::solid_arc): Ensure that the second angle
	argument to `ar' is not less than the first.

	* pic/pic.y: Allow a comma between elements of the variable list
	in the argument to `reset'.

	* pic/object.c (arc_object::arc_object): Fix computation of
	radius.

	* eqn/main.c (main): Add exit(0).

Thu Nov  1 02:03:50 1990  James Clark  (jjc at jclark)

	* troff/div.c (begin_page): Test no_space_mode after doing the
	break, but still push the page ejector cookie before doing the
	break.  Also set the next page number after doing the break.
	
	* xditview/xditview.c (NewFile): Don't set the title and icon name
	if this is the first file and its name is `-'.
	* groff/groff.c: Define a new device flag XT_OPTION.  Set it for
	the X75 and X100 devices.
	(main): If a device has the XT_OPTION flag set and there's exactly
	one file argument, pass the driver -xrm and -title options to set
	the icon name and window title to the name of the file.

	* troff/env.c (environment_switch): If there was an argument but
	it wasn't a valid number or name, then pop an environment but
	don't give an error message on underflow.

	* troff/number.c (start_number): Correct spelling in error message.

	* troff/input.c (token::delimiter): Don't print an error message
	if err is false.

	* xditview/libXdvi/parse.c (ParseInput): In case 'D', only call
	ParseDrawFunction if dw->display_enable is true.

Wed Oct 31 05:49:50 1990  James Clark  (jjc at jclark)

	* pic/pic.y: Parse text positioning like normal attributes, so as
	to allow `"text" at 0,0 ljust'.  Don't allow `center' as a
	positioning attribute.

Mon Oct 29 22:50:38 1990  James Clark  (jjc at jclark)

	* tbl/main.c (process_data): When in state START while reading a
	text block, don't change to state MIDDLE if c is a newline.

Sun Oct 28 21:59:56 1990  James Clark  (jjc at jclark)

	* dvi/dvi.c (dvi_printer::begin_page): Rename `i' variable to `j'
	so as to avoid shadowing parameter.

Wed Oct 24 18:35:39 1990  James Clark  (jjc at jclark)

	* tbl/table.c (trim_space): Deleted.
	(table::add_entry): Don't call trim_space.

Mon Oct 22 03:48:39 1990  James Clark  (jjc at jclark)

	* VERSION: Change version to 0.6.

	* troff/number.c (parse_expr): Make == work.

Sat Oct 20 11:28:17 1990  James Clark  (jjc at jclark)

	* man/grog.man: New file.
	* man/Makefile: Add grog.n to MAN1PAGES.
	* etc/grog.sh: New file.
	* etc/Makefile: Install grog.sh as grog.

Fri Oct 19 11:17:15 1990  James Clark  (jjc at jclark)

	* troff/input.c (token::next): Implement \E.

Thu Oct 18 11:56:24 1990  James Clark  (jjc at jclark)

	* xditview/tmac.X: Change font translations to match tmac.ps.

	* troff/input.c (non_empty_name_warning): Don't give a warning if
	`\{' terminates the name.

Tue Oct 16 10:04:23 1990  James Clark  (jjc at jclark)

	* ps/devps/symbol.diff: New file.
	* ps/devps/FontMakefile: Mention symbol.diff.

Sun Oct 14 11:46:46 1990  James Clark  (jjc at jclark)

	* troff/node.c (font_position): Use get_long_name to read the
	external_name.

	* troff/env.c (environment_switch): If we get a number that's < 0
	or >= NENVIRONMENTS, treat it like a name.
	Change NENVIRONMENTS to 10.

	* troff/groff.h: Remove definition of FONTS_MAX.
	* troff/node.h (class font_family): Make map a pointer instead of
	an array. Add a map_size member. Make it a class. Make nm const
	and public. Make invalidate_fontno a friend.
	* troff/node.c: Define font_table_size. Make font_info a pointer
	rather than an array.
	(class troff_output_file): Allocate font_position dynamically. Add
	nfont_positions member.
	(troff_output_file::set_font): Grow font_position if necessary.
	(troff_output_file::~troff_output_file): Delete font_position.
	(troff_output_file::troff_output_file): Allocate font_position.
	(grow_font_table): New function.
	(troff_output_file::really_begin_page,
	troff_output_file:really_copy_page): Use nfont_positions rather
	than FONTS_MAX.
	(mount_font_no_translate, mount_style): Call grow_font_table if
	necessary.
	(font_family::font_family): Allocate map.
	(font_family::make_definite): Grow map if necessary. Use
	font_table_size instead of FONTS_MAX.
	(font_family::~font_family): New function.
	(invalidate_fontno): Use font_family::map_size.
	(get_fontno, env_space_width, env_half_narrow_space_width,
	env_narrow_space_width, symbol_fotno, is_good_fontno,
	get_bold_fontno, make_glyph_node): Use font_table_size rather than
	FONTS_MAX.
	(next_available_font_position): Never return 0.

Fri Oct 12 10:17:52 1990  James Clark  (jjc at jclark)

	* ps/tmac.ps: Add font translations for compatibility with dpost.

Thu Oct 11 12:09:03 1990  James Clark  (jjc at jclark)

	* eqn/pile.c: Rename default_baseline_sep to baseline_sep.
	Move BASELINE_SEP_FORMAT and COLUMN_WIDTH_FORMAT into pbox.h.
	Move definitions baseline_sep, shift_down, column_sep,
	matrix_side_sep into...
	* eqn/box.c: Add them to param_table.
	* eqn/pbox.h: Add declarations to pbox.h.

	* troff/input.c (set_string): Cast value to unsigned char *.

	* troff/token.h (process_input_stack): Declare it static before
	declaring it a friend.

Wed Oct 10 09:59:13 1990  James Clark  (jjc at jclark)

	* dvi/devdvi/texex.map: Fix positions of extensible brace middle
	and bottom.
	* dvi/devdvi/EX: Regenerate.

	* troff/input.c (init_charset_table): Make ", ', ), ], *, \(dg
	transparent.

Tue Oct  9 08:34:02 1990  James Clark  (jjc at jclark)

	* eqn/lex.c: In defaults_table, make definition of `dot' call
	`dot_def'.  Don't explicitly make it roman.  Similarily for other
	accents.

	* pic/lex.c (for_input::for_input): Add by_is_multiplicative
	argument.
	(for_input::get, for_input::peek): Use this.
	(do_for): Add by_is_multiplicative argument.
	* pic/pic.y: Change optional_by clause to allow '*' after `by'.
	Change semantic value of optional_by to be a double plus a flag
	saying whethet the by clause is multiplicative.

	* eqn/lex.c (get_delimited_text): Remember location of start of
	definition.  Improve error handling when EOF is encountered.

	* lib/font.h: Rename handle_x_command to
	handle_unknown_font_command.
	* lib/font.c (font::load): Call handle_unknown_font_command for
	any unknown command in the font description file.  Don't call
	handle_x_command. Include the name of the command in the argv.
	Improve message for unknown command after kernpairs or charset
	command.
	* ps/ps.c (ps_font::handle_x_command): Rename to
	handle_unknown_font_command.  Remove message about `x download'
	command.  Give error message for wrong number of arguments.
	* ps/devps/afmtodit: Generate `encoding' instead of `x encoding'.
	* dvi/dvi.c (dvi_font::handle_x_command): Rename to
	handle_unknown_font_command. Give an error message for wrong
	number of arguments.  Rename design_size to designsize.
	* dvi/tfmtodit.c (main): Generate `checksum' instead of `x
	checksum', `designsize' instead of `design_size'.

Mon Oct  8 00:38:55 1990  James Clark  (jjc at jclark)

	* eqn/*.[chy]: Change underaccent to uaccent.

	* eqn/eqn.y: Add rule for underaccent.  Declare UNDERACCENT token;
	give it the same precedence as ACCENT.
	* eqn/other.c (make_underaccent_box): New function.
	* eqn/box.h: Declare it.
	* eqn/lex.c: Add UNDERACCENT to token_table. Add utilde to
	def_table.

Sun Oct  7 11:25:16 1990  James Clark  (jjc at jclark)

	* pic/pic.y (reset_all): New function. Called in rule for RESET.
	(parse_init): Call reset_all.
	(define_variable): When defining scale reset only those
	pre-defined variables that are scaled.
	(defaults_table): Add `scale' as non-scaled value.

	* pic/pic.y: Redo parsing of text adjustments: parse adjustments
	together with the text; allow any number of positioning words;
	allow center as a positioning word.

	* pic/object.c (output::compute_scale): Get picture maximum height
	and width from variables called maxpswid and maxpsht.
	* pic/pic.y: Add maxpswid and maxpsht to defaults_table.

Sat Oct  6 10:16:56 1990  James Clark  (jjc at jclark)

	* pic/object.c (object_spec::make_text): Multiply textht by number
	of text items.

	* pic/pic.y: Allow `sprintf("string", expr,...)' wherever text can
	occur.
	(do_sprintf): New function.
	(pic.gperf): Add sprintf token.
	(text, sprintf): New rules.

	* pic/pic.y: `rand()' with no arguments returns a random number
	in the range [0,1).

	* pic/pic.y: Allow a bare expression to be an attribute: change
	precedences to support this.  Change optional_ordinal rule to
	optional_ordinal_last to avoid reduce/reduce conflict.
	* pic/object.c (object_spec::object_spec): Initialize direction.

	* pic/pic.y: Implement ^ operator meaning exponentiation.

	* troff/node.h: Add default argument to mount_font.
	* troff/node.c (font_position): Read an optional third argument
	giving the external_name.
	(mount_font): Add optional argument giving the external_name.
	(mount_font_not_translate): Have additional argument giving
	external name.  Use this name to load the font.  Pass both names
	to font_info::font_info.
	(font_info::font_info): Have additional argument giving
	external_name.
	(class tfont): New member external_name.
	(font_info::get_tfont): Use external name to construct tfont_spec.

Fri Oct  5 04:03:13 1990  James Clark  (jjc at jclark)

	* eqn/lex.c (init_table): Add argument giving device.  Define
	name of device to be "1".
	(do_ifdef): Counts as true if the argument has been defined with
	`define'.
	* eqn/main.c (main): Call init_table with device argument. Make
	device local to main.
	* eqn/eqn.h: Change declaration of init_table. Remove declaration
	of device.

	* pic/lex.c (get_delimited): Allow text to be delimited by
	matching {}s.  Don't recognize ending delimiter within a string.

	* troff/input.c (get_delim_name): New function.
	(token::next): Implement \C.

	* lib/font.c (font::load): Grok ---.  Add an alias for each
	character based on its code.
	(font::get_code_width): Deleted.
	* lib/font.h (class font): Declare font::number_to_index().
	Remove declaration of font::get_code_width.
	* lib/nametoindex.c (font::name_to_index): Add 512 rather than 256
	to indices of named characters.
	(font::number_to_index): New function.
	* troff/input.c (font::number_to_index): New function.
	(get_charinfo_by_number, charinfo::get_number,
	charinfo::set_number): New functions.
	(token::next): Turn \N into a TOKEN_NUMBERED_CHAR.
	(token::process, token::description, token::get_char,
	token::add_to_node_list, token::operator==): Handle
	TOKEN_NUMBERED_CHAR.
	* troff/charinfo.h: Declare get_charinfo_by_number,
	charinfo::get_number, charinfo::set_number.  Add NUMBERED flag to
	charinfo class.
	(charinfo::numbered): New function.
	* troff/token.h: Add TOKEN_NUMBERED_CHAR.
	* troff/env.h (class environment): Remove declaration of ...
	* troff/env.c (environment::make_numbered_char_node): Deleted.
	* troff/node.c (make_numbered_node): Deleted.
	(class numbered_glyph_node): Remove.
	(troff_output_file::put_char_width, troff_output_file::put_char):
	Handle numbered chars.
	(troff_output_file::numbered_char): Removed.
	(tfont::get_code_width): Removed.
	(make_glyph_node): Don't search special fonts for numbered
	characters.
	* troff/node.h: Remove declaration of make_numbered_node.
	* driver/input.c (do_file): Handle N command.
	* driver/printer.h: Add declaration of ...
	* driver/printer.c (printer::set_numbered_char): New function.
	* dvi/tfmtodit.c (main): Generate unnamed entries.
	* ps/devps/afmtodit: Likewise.
	* xditview/xtotroff.c (MapFont): Likewise.
	* xditview/libXdvi/parse.c (ParseInput): Grok N command.

	* tbl/main.c (process_format): If multiple widths are specified
	for a column but all the widths are the same, don't give an error
	message.

	* tbl/table.c (table::do_row): If the current row is all lines and
	the stuff doesn't contains a line, mark the top of the row after
	printing stuff before the row.  If the current row is not all
	lines and the stuff doesn't contain a line, don't unnecessarily
	mark the top of the row before printing the stuff.
	
Mon Oct  1 11:42:00 1990  James Clark  (jjc at jclark)

	* troff/groff.h: Remove MAX_PATH.
	* troff/input.c (open_file): Dynamically allocate space for the
	path.
	(open_mac_file, process_macro_file): Corresponding changes.

Sun Sep 23 18:56:26 1990  James Clark  (jjc at jclark)

	* troff/node.h (class output_file): Make copy_file pure.  Add
	vspace method ifdef COLUMN. Add is_printing method.
	* troff/node.c: Add class printing_reg. Add class
	real_output_file. Derive other output_file classes from
	real_output_file; in these classes rename begin_page to
	really_begin_page, print_line to really_print_line, copy_file to
	really_copy_file, transparent_char to really_transparent_char.
	Move output_file::flush to real_output_file. Add printing member
	to class output_file.
	* troff/div.h: Remove printing member from top_level_diversion.
	Add vspace member function to class diversion ifdef COLUMN. Add
	some declarations ifdef COLUMN.
	* troff/div.c (top_level_diversion::copy_file,
	top_level_diversion::transparent_output,
	top_level_diversion::output): Don't test printing member before
	output.
	* troff/input.c: Handle initial variable_space_request ifdef
	COLUMN.
	* troff/Makefile: Add column.c but comment it out. Add -DCOLUMN
	but comment it out.

Sat Sep 22 11:32:22 1990  James Clark  (jjc at jclark)

	* troff/div.c (diversion::need): Make any space forced.  If we
	sprung a trap, set truncated_space to minus the distance to the
	trap and set needed_space to the amount that was needed.
	(top_level_diversion::space): A forced space turns no_space_mode
	off.
	(class constant_vunits_reg): New class.
	(init_div_requests): Implement number registers .trunc and .ne
	using constant_vunits_reg.
	(class truncated_space_reg): Deleted.	

	* troff/div.h: Don't have a no_space_mode member in diversion.
	Instead have it in top_level_diversion.
	* troff/div.c (diversion::diversion): Don't initialize
	no_space_mode.
	(top_level_diversion::top_level_diversion): Initialize
	no_space_mode.
	(no_space, restore_spacing): Do nothing if curdiv != topdiv.
	(macro_diversion::output): Don't clear no_space_mode.

	* troff/input.c (diverted_space_node::reread): Don't call
	environment::do_break.  In fill mode, act like a blank line.
	(diverted_copy_file_node::reread): Don't call
	environment::do_break.

	* troff/div.c (blank_line): New function.
	* troff/div.h: Declare it.
	* troff/input.c (process_input_stack): Call it.

	* troff/div.c (truncated_space_reg::get_string): New function.
	(init_div_requests): Bind to .trunc.
	(space_request, top_level_diversion::space,
	top_level_diversion::output, macro_diversion::space,
	macro_diversion::output): Update truncated_space.
	(macro_diversion::output): Redo calculations when trap sprung.
	(macro_diversion::output, macro_diversion::space): No need for
	trap_flag.

	* troff/div.c (top_level_diversion::output): Set nl_reg_contents
	after truncating post line spacing.

Fri Sep 21 11:27:25 1990  James Clark  (jjc at jclark)

	* ps/devps/prologue (MF, SF): Make them work even if setfont is
	defined as a procedure rather than as an operator.

Thu Sep 20 12:55:05 1990  James Clark  (jjc at jclark)

	* troff/div.c (macro_diversion::space): Ignore no_space_mode.

Wed Sep 19 10:54:37 1990  James Clark  (jjc at jclark)

	* troff/div.c (top_level_diversion::output): Merge
	output_file::print_line and output_file::end_of_line member
	functions.
	* troff/div.h (class output_file):
	* troff/node.c (troff_output_file::print_line,
	troff_output_file::end_of_line, output_file::end_of_line,
	ascii_output_file::print_line, suppress_output_file::print_line):
	Corresponding changes.	

Tue Sep 18 11:31:47 1990  James Clark  (jjc at jclark)

	* troff/input.c (token::next): Don't give a warning for `\.'.

	* troff/env.c (environment::get_center_lines): New function.
	(init_env_requests): Bind number register .ce to it.
	* troff/env.h: Declare it.
	* tbl/table.c (table::init_output): Define reset macro to restore
	.ce.  If center option not given, store .ce in SAVED_CENTER_REG.
	Then do .ce 0.
	(table::print): If center option not given, then imply center
	option if SAVED_CENTER_REG > 0.

Mon Sep 17 09:19:19 1990  James Clark  (jjc at jclark)

	* ps/devps/Makefile: Remove T from FONTS. Remove TSymbol.ps and
	Troff.ps from DOWNLOAD.
	
	* troff/Makefile: Change comment in DEFINES to avoid confusing
	System V make.

	* ps/ps.c (ps_printer::do_exec): Allow newlines within PostScript
	code.  Don't try to catch errors with stopped.
	(check_line_lengths): New function.
	* ps/devps/prologue (EXEC): Deleted.
	(EBEGIN, EEND): New procedures.

Sun Sep 16 14:51:15 1990  James Clark  (jjc at jclark)

	* troff/input.c: Include request.h before node.h.
	* troff/node.c: Likewise.
	* troff/env.c: Likewise.
	* troff/div.c: Likewise.
	* troff/node.h (class special_node): Store argument as a macro
	rather than a char *.
	* troff/node.c (special_node::special_node, special_node::copy):
	Grok this.
	(special_node::~special_node): Deleted.
	(special_node::tprint): Deleted.
	(special_node::tprint_start, special_node::tprint_end,
	special_node::tprint_char): New functions.
	(troff_output_file::special): Deleted.
	(troff_output_file::start_special, troff_output_file::end_special,
	troff_output_file::special_char): New functions.
	* troff/input.c (special_node::tprint): New function.
	(do_special): Use macro not char *.
	(do_transparent_macro): Deleted.
	(token::next): Don't call do_transparent_macro.

	* troff/input.c (token::next): Add 'Y' case.
	(do_transparent_macro): New function.
	* troff/node.c (troff_output_file::special): Handle newlines with
	argument using new continuation convention.
	* driver/input.c (get_string): Cope with continuation convention.
	(do_file): Don't call skip_line after calling get_string(1).
	* ps/ps.c (ps_printer::special, ps_printer::do_import,
	ps_printer::do_def, ps_printer::do_exec): Cope with newlines in
	arg.
	* xditview/libXdvi/parse.c (ParseInput): Ignore lines starting
	with +.

Sat Sep 15 19:00:10 1990  James Clark  (jjc at jclark)

	* troff/input.c (asciify): By default, illegal input characters
	should return empty string.

	* troff/input.c (copy_file): Handle first page transition like title.
	(token::next, process_input_stack): Grok COPY_FILE_REQUEST.

	* troff/input.c (token::next): Improve error message for EOF after
	escape character.
	(input_char_description): New function.
	(get_char_for_escape_name): Use input_char_description.
	(token::next): Warn about unrecognized escape sequences.
	(warning_table): Add WARN_ESCAPE.
	* troff/groff.h: Declare WARN_ESCAPE. Change WARN_TOTAL
	accordingly.

	* troff/token.h: Remove declaration of process_input_stack.

	* troff/input.c: Remove declaration of init_hyphen_requests.
	* troff/request.h: Correct spelling in declaration of same.

	* troff/input.c (token::next): Check whether escape_char is 0.

Fri Sep 14 12:09:25 1990  James Clark  (jjc at jclark)

	* groff.c (main, usage, help): Implement -P and -L options.
	* groff.sh: Likewise.

	* troff/input.c (token::next): Use some gotos to avoid code
	duplication.

	* troff/input.c (get_long_name, get_name, read_long_ecsape_name):
	Avoid calling symbol::symbol if name empty.

Thu Sep 13 06:21:45 1990  James Clark  (jjc at jclark)

	* troff/input.c (init_input_requests): Make \n(.x return the major
	version number and \n(.y return the minor version number.
	* troff/Makefile: Construct file majorminor.c defining
	major_version and minor_version automatically from ../VERSION.

	* troff/node.c (class glyph_node): Make operator new and operator
	delete public.
	(class ligature_node): Similarily.

	* troff/input.c (operator==(const macro &, const macro &)): New
	function.
	(non_interpreted_node::same): Use this.
	(string_iterator::string_iterator): Make macro& argument const.

	* troff/input.c (input_iterator::get): New function. Don't make
	asciify_macro or class non_interpreted_node friends of class
	input_iterator.
	(non_interpreted_node::interpret): Use input_iterator::get.
	(asciify_macro): Likewise.

	* troff/input.c (~token_node, ~string_iterator, ~arg_list,
	~non_interpreted_node): Deleted.
	* troff/node.c: (~suppress_output_file, ~ascii_output_file):
	Deleted.

	* troff/symbol.h: Make all symbol member functions const.

	* lib/strtol.c: New file.
	* lib/Makefile: Add strtol.c.
	* Makefile: Define STRTOL as strtol.o to include strtol in
	libgroff.a.

Wed Sep 12 10:00:49 1990  James Clark  (jjc at jclark)

	* pic/troff.c (troff_output::simple_circle): Divide by scale.

Tue Sep 11 14:17:16 1990  James Clark  (jjc at jclark)

	* troff/input.c (do_special): Use input_level.

	* troff/token.h (TOKEN_BACKSPACE): New token.
	(token::backspace): New function.
	* troff/input.c (token::description, token::next, token::process):
	Grok TOKEN_BACKSPACE.
	(do_special): Turn TOKEN_BACKSPACE back into \b.

	* troff/token.h (token::leader): New function.
	* troff/input.c (do_special): Turn TOKEN_LEADER back into \001.

	* troff/input.c (do_special): Turn TOKEN_TAB back into \t.

	* troff/input.c (do_special): Use token::description in error
	message.

Mon Sep 10 11:06:27 1990  James Clark  (jjc at jclark)

	* troff/input.c (decode_args): Combine quoted and
	quote_input_level variables. Make it a for (;;) loop.

	* troff/input.c (get_char_for_escape_name): Check for \001 and \b.

	* troff/input.c (read_long_escape_name): The test for whether to
	expand buffer was off by 1.
	(read_string): Similarily.

Fri Sep  7 11:45:50 1990  James Clark  (jjc at jclark)

	* troff/input.c: Use `const int' rather than `static const int'.

	* troff/div.h (diversion::copy_file): Declare as pure virtual.
	(macro_diversion::copy_file): New function.
	* troff/node.h: New class diverted_copy_file_node.
	* troff/node.c: Implement it.
	* troff/input.c (copy_file): Use diversion::copy_file. Handle
	first page transition by pushing a diverted_copy_file_node.
	* troff/input.c (token::next, process_input_stack): Don't handle
	COPY_FILE_REQUEST.

Thu Sep  6 13:29:10 1990  James Clark  (jjc at jclark)

	* ps/ps.c (flush_sbuf): Remember to add sbuf_kern when checking
	whether space widths need adjusting.

	* troff/charinfo.h: Generalize translated_to_space to
	special_translation so as to allow translation to \&.
	* troff/input.c (translate): Allow translation to \&.
	(charinfo::*): Corresponding changes.
	* troff/node.c (make_node, node::add_char): Corresponding changes.
	* troff/node.h (dummy_node::dummy_node): Allow optional first
	argument.

	* lib/lib.h: Make codes 0200 to 0237 illegal input characters.
	* troff/token.h: Remove TOKEN_TITLE. Remove token::title. Add
	TOKEN_REQUEST.
	* troff/input.c (token::next): Turn a TITLE_REQUEST into a
	TOKEN_REQUEST with an argument of TITLE_REQUEST.
	(token::process): Grok that.
	* troff/input.c (copy_file): Handle first page transition like
	title by pushing a COPY_FILE_REQUEST cookie.
	(token::next, process_input_stack): Grok that.
	* troff/node.h (output_file::copy_file): Add x and y arguments.
	Make it non-pure.
	* troff/div.c (top_level_diversion::copy_file): Supply them.
	* troff/node.c (troff_output_file::copy_file): Add x and y
	arguments; moveto specified position.  Invalidate font_position
	array after copying file.
	(output_file::copy_file): New function.
	(suppressed_output_file::copy_file, ascii_output::copy_file):
	Removed.
	* troff/input.c (transparent_file): New function.
	(init_input_requests): Bind to "trf".
	(token::next): Handle TRANSPARENT_FILE_REQUEST cookie.
	(process_input_stack): Likewise.

	* troff/Makefile: Add ../lib/lib.h to GROFF_H.

	* troff/node.c (init_node_requests): New number registers .kern
	pointing to global_kern_mode, and .lg pointing to
	global_ligature_mode.

	* troff/node.c (ligature): Don't change it if we get a bad
	integer.

	* troff/input.c (do_define_string): Don't strip tabs.

	* troff/input.c (asciify_macro): Make the string_iterator auto.

	* troff/node.c (init_font_requests): Rename to...
	(init_node_requests):
	* troff/node.h: Change declaration.
	* troff/input.c (main): Change call.

	* troff/input.c (node::reread, diverted_space_node::reread): New
	methods.
	(process_input_stack): Call reread rather than
	get_diverted_space_node.
	* troff/node.c (node::get_diverted_space_node,
	diverted_space_node::get_diverted_space_node): Removed.
	* troff/node.h: Declare reread methods instead of
	get_diverted_space_node methods. Make `n' member private.
	* troff/input.c: (token::diverted_space): Removed.
	* troff/token.h: Removed declaration.
	

Tue Sep  4 00:48:04 1990  James Clark  (jjc at jclark)

	* eqn/script.c (script_box::compute_metrics): Don't let
	SUP_RAISE_FORMAT become negative.

	* tbl/table.c (table::do_row): Entries that don't end in the
	this row shouldn't make the row non-blank.
	
	* tbl/table.c (table::make_columns_equal): Only set the width of
	columns which are marked as equal.
	
	* tbl/main.c (process_data): Before issuing excess data error,
	if last character was a newline unget it; then get it again after
	the error.  Also include the contents of the entry in the message.

	* groff.c: New file.
	* Makefile: Build groff from groff.c.  Make it possible to use
	either groff.sh or groff.c as groff.
	* Makefile.bd: Similarily.

Mon Sep  3 09:39:49 1990  James Clark  (jjc at jclark)

	* groff.sh: Don't delay expansion of $@ in assignment to files.
	Remove occurrences of \".

Sun Sep  2 09:56:59 1990  James Clark  (jjc at jclark)

	* all Makefiles: Simplify and rearrange.

	* Makefile: Handle fmod like malloc.
	* lib/Makefile: Similarily.
	* lib/fmod.c: Remove #ifdef NEED_FMOD.

	* Makefile: Rename OPTIMISE to OPTIMIZE.

	* groff.sh: Remove assignment to PATH.
	* Makefile: Remove SHPATH variable.
	* Makefile.bd: Similarily.

	* groff.sh: Add -V option to print the pipeline instead of
	executing it.

Fri Aug 31 00:56:46 1990  James Clark  (jjc at jclark)

	* lib/font.c: Split off file searching into ...
	* lib/fontfile.c: New file.

	* lib/strerror.c (strerror): Use `Error %d' for unknown errors.

Thu Aug 30 13:13:55 1990  James Clark  (jjc at jclark)

	* tbl/table.c (table::do_hspan): Delete assertion that e != 0.
	Also change misleading comment.
	(table::do_vspan): Change similarily misleading comment.
	* tbl/main.c (process_data): A format row with an explicit `s'
	uses up a data line, even if all the other columns are `_' or `='.

	* troff/input.c (token::description): Fix description of
	TOKEN_DUMMY and TOKEN_EMPTY.

Wed Aug 29 04:12:08 1990  James Clark  (jjc at jclark)

	* groff.sh: Fix description of -Z in help message.

Tue Aug 28 07:28:33 1990  James Clark  (jjc at jclark)

	* pic/object.c (object_spec::make_object): Allow negative and zero
	line thicknesses.
	* pic/pic.y: Give linethick default value of -1.0.
	* pic/troff.c (troff_output::troff_output): Initialize
	last_line_thickness to BAD_THICKNESS.
	(troff_output::finish_picture): Set thickness to BAD_THICKNESS.
	(troff_output::line_thickness): Canonicalize negative thicknesses
	to RELATIVE_THICKNESS.
	* pic/tex.c (tex_output::set_pen_size): Silently map negative line
	thicknesses to DEFAULT_PEN_SIZE. Canonicalize negative pen sizes
	to -1.0.
	(tex_output::start_picture): Set pen_size to -2.0.

	* ps/ps.c (ps_printer::set_line_thickness): If line_thickness is
	0, then use 0 linewidth.
	(ps_printer::ps_printer): Initialize line_thickness to -1.

	* pic/troff.c (troff_output::simple_ellipse): Divide by scale.

	* ps/devps/symbolchars: Remove `or'.
	* ps/tmac.ps: Implement \(or with .char.

	* ps/devps/symbolchars: Move most characters into textmap.
	* ps/devps/textmap: Add names for troff bracket characters. Remove
	ul, ru, br, bv.

	* ps/devps/TSymbol.ps: Removed.
	* ps/devps/FontMakefile: Make S from Symbol not TSymbol.
	* ps/tmac.ps: Do with .char what TSymbol did.
	* ps/devps/download: Remove TSymbol.

	* ps/devps/T: Removed.
	* ps/devps/Troff.ps: Removed.
	* ps/devps/Troff.afm: Removed.
	* ps/tmac.ps: Implement \(ru, \(ul, and \(br with .char.
	* ps/devps/download: Remove Troff.
	* ps/devps/FontMakefile: Remove T target.
	* ps/devps/DESC-A4: Remove T from font list.
	* ps/devps/DESC-letter: Likewise.

	* troff/input.c (macro_to_node): Rename to ...
	(charinfo_to_node): Don't pass mac argument.  Temporarily remove the
	character's definition while processing it.
	* troff/node.c (node::add_char, make_node): Change calls to
	macro_to_node accordingly.

	* troff/input.c (token::next): Translate \_ to \(ul.

	* tty/devascii/R.proto: Add `|'.
	* tty/devlatin1/R.proto: Likewise.

Mon Aug 27 11:25:41 1990  James Clark  (jjc at jclark)

	* man: Put the version number in all the man pages.

Sun Aug 26 11:40:05 1990  James Clark  (jjc at jclark)

	* Makefile.bd: New file.
	* README.bd: New file.

	* VERSION: New file.
	* lib/version.c: Removed.
	* lib/Makefile: Create version.c from ../VERSION. Remove version.c
	in clean target.

	* troff/input.c (main): Get hyphen_file from GROFF_HYPHEN
	environment variable.

	* all Makefiles: Split install target into install.bin for
	binaries, and install.nobin for everything else.
	* Makefile: Add bindist target.

	* man/afmtodit.man: New file.
	* man/Makefile: Add afmtodit.n to MAN1PAGES.
	* ps/devps/Makefile: Add textmap to DEVICEFILES. Install afmtodit
	in BINDIR.
	* ps/Makefile: Pass BINDIR to make install in devps.

	* ps/ps.c (ps_printer::set_char): Do nothing if the character is
	the space character.

	* ps/devps/FontMakefile: Rename symbol.afm to tsymbol.afm.

Sat Aug 25 15:39:03 1990  James Clark  (jjc at jclark)

	* ps/ps.c: Redo font downloading.
	* ps/devps/download: New file.
	* ps/devps/Makefile: Add download to DEVICEFILES.
	* ps/devps/afmtodit: Remove -d option.
	* ps/devps/FontMakefile: Don't use -d option with afmtodit.
	* ps/devps/symbosl.ps: Add %%DocumentFonts comment.
	* ps/devps/zapfdr.ps: Likewise.
	* ps/devps/TSymbol.ps: Likewise.

Fri Aug 24 20:10:30 1990  James Clark  (jjc at jclark)

	* groff.sh: Initialize dev to ${GROFF_TYPESETTER:-@DEVICE@}.

Thu Aug 23 10:03:47 1990  James Clark  (jjc at yquem)

	* ps/ps.c (ps_output::include_file): If BROKEN_SPOOLER is defined,
	then strip the first line if it starts with %.
	* Makefile: Add a comment about this.

	* man/tfmtodit.man: New file.
	* man/Makefile: Add tfmtodit.n to MAN1PAGES.
	* dvi/Makefile: Install tfmtodit in BINDIR.

	* dvi/tfmtodit.c (usage): Mention -v option.

Wed Aug 22 09:56:36 1990  James Clark  (jjc at yquem)

	* troff/node.c (troff_output_file::end_of_line): Call do_motion.
	* troff/node.c (troff_output_file::transparent_char): Don't call
	flush_tbuf.

	* eqn: Add check_tabs method to most box classes.
	* eqn/box.c (box::top_level): Call check_tabs.

	* eqn/script.c (script_box::output): Use \Z.
	* eqn/limit.c (limit_box::output): Use \Z.

	* eqn/box.c (box::top_level): Use itoa.

Tue Aug 21 09:29:28 1990  James Clark  (jjc at yquem)

	* dvi/tmac.dvi: Add font translations for CR, C, TT.
	* dvi/devdvi/Makefile: Don't make links to CW.

	* ps/tmac.ps: Add font translations for C, CW, CO, CX, CD, H, HO,
	HX, HD.
	* xditview/tmac.X: Likewise.

	* troff/node.c: Add font translation feature.
	(get_font_translation): New function.
	(symbol_fontno): Translate the font name.
	(mount_font_no_translate): Rename to mount_font to this.
	(mount_font): New function.
	(font_family::make_definite): Call mount_font_no_translate instead
	of mount_font.
	(mount_style): Translate the font name.
	(font_translate): New function.
	(init_font_requests): Bind "ftr" to font_translate.

	* ps/devps/prologue (SN): New procedure that rounds a position to
	the nearest (pixel + (.25,.25)).
	(DL): Use SN to round endpoints.

	* lib/version.c: Changed version to 0.5.

Sat Aug 18 04:43:21 1990  James Clark  (jjc at yquem)

	* Makefile: Move definition of PAGE to the very beginning, so that
	people are less likely to miss it.

Fri Aug 17 02:15:11 1990  James Clark  (jjc at yquem)

	* man/Makefile: Don't need to sed out @UPCASE_PROG_PREFIX@.

	* troff/env.c (environment::choose_breakpoint): Make `can't find
	breakpoint' error a warning of type WARN_BREAK.  Change message to
	`can't break line'.
	* troff/groff.h: Declare WARN_BREAK with code 4; change WARN_INPUT to
	code 040000.
	* troff/input.c: Add WARN_BREAK to warning_table.  Include
	WARN_BREAK in DEFAULT_WARNING_MASK.

	* tty/tmac.tty: Add definition of \(+-.

	* groff.sh: Remove `--' option to set command.

	* dvi/devdvi/texsy.map: Remove duplicate md entry.

	* ps/devps/eqnchar: Better definition of cdot using md.
	* dvi/devdvi/eqnchar:  Likewise.
	* xditview/devX100/eqnchar:  Likewise.
	* xditview/devX75/eqnchar: Likewise.
	* eqn/lex.c: Add definition of cdot.

Thu Aug 16 09:33:57 1990  James Clark  (jjc at yquem)

	* troff/input.c (get_optional_char): New function.
	* troff/input.c (set_page_character): Use get_optional_char(),
	rather than has_arg() and tok.get_char(1).
	* troff/env.c (tab_character, leader_character, hyphen_char,
	field_characters): Likewise.
	(margin_character): Likewise.  Also always delete the
	margin_character_node.

	* troff/input.c (token::get_char): Use token::description.

	* troff/input.c (has_arg): Don't skip over tab and \}.
	* troff/number.c (start_number): Give a warning if the number
	starts with \} (WARN_RIGHT_BRACE) or tab (WARN_TAB).

Wed Aug 15 10:04:37 1990  James Clark  (jjc at yquem)

	* troff/input.c (empty_name_warning, non_empty_name_warning): New
	functions.
	(get_name, get_long_name): Use these.  Rename `warn' argument to
	`required'.

	* troff/node.c (get_fontno): Test that the symbol is not null.

	* troff/input.c (token::description): New function.
	* troff/number.c (parse_term): Use token::description in `numeric
	expression expected' message.
	* troff/groff.h: Add WARN_MISSING.
	* troff/number.c (start_number): New function.
	* troff/number.c (get_vunits, get_hunits, get_number, get_integer,
	get_incr_number): Use start_number().
	* troff/input.c (DEFAULT_WARNING_MASK): Enable WARN_NUMBER by
	default.
	* troff/input.c (get_name, get_long_name): Use WARN_MISSING.
	* troff/reg.c (alter_format): Use WARN_MISSING. Also use
	token::descripion.
	* troff/input.c (token::get_char): Use WARN_MISSING.
	* troff/input.c (token::delimiter): Use token::description.
	* troff/env.c (environment_switch): Back out Aug 3 change.
	* troff/input.c (has_arg): Skip over \}s and tabs but give a
	warning.
	* troff/token.h (token::tab): New function.
	* troff/node.c (get_fontno): Use tok.skip() rather than has_arg().
	* troff/reg.c (alter_format): Likewise.
	* troff/node.c (bold_font): Use has_arg() rather than tok.skip().

Tue Aug 14 10:11:21 1990  James Clark  (jjc at yquem)

	* troff (most files): Redo warnings. Divide warnings into various
	categories; warning() has an additional first argument indicating
	the category it falls into.
	* troff/input.c (main): -w now takes an argument. New option -W.
	(enable_warning, disable_warning): New functions.

	* ps/devps/afmtodit: Add -a option to lie about the italic angle.
	* ps/devps/FontMakefile: Pretend TI has an angle of 7.

Mon Aug 13 10:11:16 1990  James Clark  (jjc at yquem)

	* ps/devps/eqnchar: Better definitions of dotdot, vec, dyad, inf.
	* xditview/devX100/eqnchar: Likewise. Remove definition of dot.
	* xditview/devX75/eqnchar: Likewise.
	* dvi/devdvi/eqnchar: Better definitions of vec, dyad, dotdot.

	* eqn/other.c: When bar or over applies to a single character
	don't produce an overline_box or an underline_box. Instead produce
	an accent_box or an underaccent_box, with the accent a line
	whose width is accent_width.  New classes underaccent_box,
	overline_char_box and underline_char_box.
	* eqn/box.h: Move overline_box, underline_box, accent_box class
	declarations into eqn/other.c. Add declarations of
	make_underline_box, make_overline_box, make_accent_box.
	* eqn/eqn.y: Call make_overline_box, make_underline_box
	make_accent_box instead	of constructors.
	* eqn/pbox.h, eqn/box.c: Add accent_width parameter.

	* eqn/other.c: Add accent_box::~accent_box.
	* eqn/box.h: Declare it.

	* groff.sh: With -Tps, use eqn -D.

	* eqn/other.c (overline_box::output): Use \Z. If draw_flag use \D
	rather than \l.
	(underline_box::output): Similarily.
	(accent_box::output): Use \Z.

	* xditview/tmac.X: Add definitions of ~ and ^ (so that they are a
	bit smaller.)

Sun Aug 12 09:41:15 1990  James Clark  (jjc at yquem)

	* troff/div.c (top_level_diversion::transparent_output(unsigned
	char)): Use asciify.
	* troff/input.c (asciify): Don't make it static.
	* troff/token.h (asciify): Declare it.
	
	* troff/input.c (get_name, get_long_name, token::get_char,
	token::delimiter): Add an extra default argument which says
	whether a warning should be printed.
	* troff: Pass a non-zero argument to one of these rather than
	printing a warning directly.

Sat Aug 11 09:02:21 1990  James Clark  (jjc at yquem)

	* troff: Consistently use symbol::is_null.

	* troff/dictionary.h: Move some inline functions into
	dictionary.c.

	* troff/request.h: Move inline functions into input.c.
	(request_or_macro::invoke): Make it pure.

	* troff/input.c, troff/reg.h: New class `constant_int_reg'.
	* troff/input.c (init_input_requests): Use class constant_int_reg.
	(class compatible_reg): Deleted.
	* troff/div.c (init_div_requests): Use class constant_int_reg.
	(class last_post_line_extra_space_reg): Deleted.

	* troff/env.c (tab_character): Don't change the tab character if
	we get an invalid argument.
	(hyphen_char): Similarily.

	* troff/reg.c (alter_format): Check that nm is not null.

	* Makefile, groff.sh: Make it possible to customize the commands
	used for printing PostScript and dvi files. Also make it possible
	to customize the path used by groff.sh.

	* eqn/eqn.y: Make `left' right associative.

Fri Aug 10 18:20:39 1990  James Clark  (jjc at yquem)

	* pic/pic.h: Added definition of M_SQRT2 for those systems that
	don't have it.

	* pic/pic.h: Removed definition of INT_MAX.

	* troff/node.c (italic_corrected_node::vertical_extent): Omit
	`return'.

	* troff/input.c (token::next):  Handle \R like \n.

Tue Aug  7 09:46:33 1990  James Clark  (jjc at yquem)

	* ps/tmac.pc (PSPIC): Simplify.

	* troff/env.c (tab_stops::to_string):
	* pic/pic.y (object_type_name):
	* pic/troff.c (simple_output::line):
	* pic/tex.c (tex_output::spline):
	* pic/object.c (object_spec::make_object):
	* tbl/main.c (process_data):  Add cases to switch statements to
	avoid cfront warnings. (Some of these are spurious, since the
	switch already has a default case.)

	* ps/tmac.ps (PSPIC): Reformatted.  Prefix all local names with
	`ps-'.  Don't test systat; instead check number of arguments to
	ps-bb.

Mon Aug  6 00:13:07 1990  James Clark  (jjc at yquem)

	* macros/tmac.e: Do not decrease the page offset by 0.5i.

	* ps/ps.c (ps_printer::ps_printer): Use mktemp instead of tempnam.
	Unlink the file as soon as we have opened it, so that we don't
	have to bother with signal handlers.
	(handler): Deleted.
	(fatal_error_exit): Deleted.
	(main): Don't call signal.

	* dvi/tfmtodit.c: Add -k option so that kerns with the skewchar
	can be ignored.
	* dvi/devdvi/Makefile: Use the -k option with S and MI.

	* pic/pic.y:  If there is a label, or an nth construction before
	the first `.' in the argument to `with', ignore it and generate a
	warning.
	* pic/lex.c (lex_warning): New function.

	* tbl/table.c (table::init_output): In section keep and release
	macro, use 0 indent when diverting and the correct indent when
	rereading.

	* troff/input.c (interpolate_number_format): Do not interpolate
	anything if the number register is not defined.

	* tbl/main.c (process_data): Don't add entry when col >= ncolumns.

Sat Aug  4 08:12:05 1990  James Clark  (jjc at yquem)

	* ps/devps/prologue (PICTURE): Set components of graphics state to
	their default values.

	* ps/devps/text.enc: Add trademark
	* ps/devps/textmap: Add names for club, spade, heart, diamond,
	carriagereturn, suchthat. Use Upsilon1 rather than Upsilon.
	* ps/devps/symbolchars: Add names for summation and product.

	* dvi/devdvi/texsy.map: Add names for club, spade, heart, diamond,
	suchthat. Add pp. Add upper-case letters.

	* xditview/libXdvi/DviChar.c: Add names for club, spade, heart,
	diamond, carriagereturn, suchthat. Use Upsilon1 rather than
	Upsilon.

	* dvi/devdvi/texsy.map: Rename lA (left angle bracket) to la, and
	rA (right angle bracket) to ra.  Introduce names for double-headed
	arrows and double-barred arrows: <>, va, lA, rA, hA, uA, dA, vA.
	* ps/devps/textmap: Likewise for ps device.
	* xditview/libXdvi/DviChar.c: Likewise for X100 and X75 devices.
	* tty/devascii/R.proto: Rename lA to la and rA to ra.
	* tty/devascii/R.proto: Likewise.
	* tty/tmac.tty: Provide definitions for \(<>, \(lA, \(rA, \(hA,
	\(uA, \(dA.
	* eqn/delim.c: In delim_table, rename \(lA to \(la and \(rA to \(ra.

	* xditview/tmac.X: Add definitions for \(fi \(fl \(ff \(Fi \(Fl.

	* eqn/lex.c: Added definitions of `approx', `grad' and `del' to
	def_table.

Fri Aug  3 09:59:27 1990  James Clark  (jjc at yquem)

	* troff/div.c (when_request): Use symbol::is_null rather than
	has_arg to determine whether we have an argument.
	(change_trap): Remove the trap if we get an invalid number. Give
	an error if we don't get at least the macro name.
	(diversion_trap): Remove trap if we get an invalid name or number.

	* troff/env.c (environment_switch): Pop if we get an invalid
	symbol or numeric expression.

	* troff/input.c (do_define_macro):  If EOF is encoutered while
	defining the macro, do tok.next() before returning.

	* troff/token.h (has_arg): Move definition from here, to ...
	* troff/input.c (has_arg): ... here

	* troff/env.c (space_size): Do nothing if we get an invalid argument.
	* troff/input.c (shift): Likewise.

	* pic/lex.c (get_token_after_dot):  Accept `.center' as a synonym
	for `.c'.

	* pic/troff.c (troff_output::start_picture):  Comment out calls to
	`..'.

	* eqn/main.c (do_file): Subtract 1 from current_lineno if
	interpret_lf_args succeeds.

	* eqn/main.c (do_file): Don't recognize delimiter if preceded by
	\\.  This avoids problems with \$N.

	* groff.sh: Pass -C to preprocessors.

	* lib/lf.c (interpret_lf_args):  Be more flexible.

	* tbl/main.c (main): Add -C option.
	(table_input::get): Do not recognize TE if followed by character
	other than a space or newline unless -C option given.
	(process_input_file): Likewise for lf, TS.
	(process_data): Likewise for lf in text blocks.

	* eqn/main.c (main): Add -C option.
	(do_file): Don't recognize EQ, EN or lf if followed by character
	other than space or newline unless -C option given.
	* eqn/lex.c (file_input::read_line): Similarily.
	* eqn/eqn.h: Declare compatible_flag.

	* etc/soelim.c (main): Add -C option.
	(interpret_lf_args): Use version in libgroff.
	(do_file):

	* pic/main.c (main): Add -C option, which sets compatible_flag.
	(top_input::get), (top_input::peek):  If -C option not given,
	do not recognize .PS/.PE/.PF/.lf if followed by a character
	other than space or newline.
	* pic/lex.c (file_input::read_line): Similarily.
	* pic/pic.h: Add declaration of compatible_flag.

Thu Aug  2 11:11:27 1990  James Clark  (jjc at yquem)

	* ps/tmac.ps (PSPIC): Avoid use of `echo -n'.

	* troff/node.c, troff/node.h:  Add `asciify' methods to classes
	derived from node.  New class space_char_hmotion_node.
	* troff/input.c (asciify_macro): New function.
	* troff/input.c (init_input_requests): New request `asciify' bound
	to asciify_macro.
	* macros/mm.diff: New file.
	* Makefile:  In install.mm target use `patch' to apply
	macros/mm.diff.

	* troff/input.c (macro::print_size): Just print the size in bytes.

	* troff/div.c (return_request): Correct the argument
	interpretation.

Wed Aug  1 12:38:36 1990  James Clark  (jjc at yquem)

	* troff/node.h (class composite_node): Add sz member.
	* troff/node.c (composite_node::size): Return sz.
	* troff/input.c (macro_to_node):  Use the initial size in the
	environment as the size of the composite_node.

	* troff/node.c (node::zero_width_tprint):  Provide a reasonable
	default.

Tue Jul 31 10:07:10 1990  James Clark  (jjc at yquem)

	* troff/div.c (change_trap): If we get a bad number expression,
	do nothing.

Mon Jul 30 10:30:49 1990  James Clark  (jjc at yquem)

	* lib/matherr.c (matherr): Define this only if math.h defines
	TLOSS.

Sun Jul 29 10:34:27 1990  James Clark  (jjc at yquem)

	* troff/div.c (macro_diversion::distance_to_next_trap): If there
	no diversion trap return vunits(INT_MAX - vresolution).

Sat Jul 28 14:28:14 1990  James Clark  (jjc at yquem)

	* troff/input.c (do_zero_width): New implementation that doesn't
	use a temporary environment. Use instead:
	(token::add_to_node_list): New function.
	* troff/env.c (environment::get_prev_char_height),
	(environment::get_prev_char_height),
	(environment::get_prev_char_skew): New functions.
	(environment::get_prev_char): New function.
	(environment::get_prev_char_width): Change to use get_prev_char.
	(init_env_request): Implement new registers .cht, .cdp, .csk.
	* eqn/sqrt.c (sqrt_box::output): Don't rely upon the argument to
	\Z being processed in a separate environment.

Fri Jul 27 10:21:25 1990  James Clark  (jjc at yquem)

	* tbl/table.c: Removed TABLE_BOTTOM_REG.

	* tbl/table.c (table::init_output): In the section release macro,
	give a warning message if the section won't fit on one page.

	* tbl/table.c (table::do_top): Emit table keep only if table is
	boxed.
	(table::do_bottom): Likewise for table release.
	(table::table), (table::add_vertical_rule):  Remove reference to
	keep member.
	* tbl/table.h: Remove keep member.

	* tbl/table.c: New register SUPPRESS_BOTTOM_REG. In
	SECTION_RELEASE_MACRO, if there's not enough space before the next
	trap to output the diversion, call T# ourselves, set
	SUPPRESS_BOTTOM_REG to 1, spring the trap, then set
	SUPPRESS_BOTTOM_REG back to 0.  In T#, do nothing if
	SUPPRESS_BOTTOM_REG is non-zero.  In T#, always mark the current
	vertical position and return to it before turning traps on again.
	
Thu Jul 26 02:54:32 1990  James Clark  (jjc at yquem)

	* troff/node.c, troff/node.h: In classes derived from node,
	replace prev_char_width method by last_char_node method.
	* troff/env.c (environment::get_prev_char_width): Use
	node::last_char_node rather than node::get_prev_char_width.

	* Makefile: Added comment about -fno-inline on 68030-based
	Apollos.

	* troff/reg.c (number_format_to_ascii), eqn/delim.c (DELIM_TABLE_SIZE),
	tty/tty.c (tty_font::load_tty_font), dvi/tfmtodit.c (main): Cast
	expressions using sizeof to int.
	* dvi/dvi.c (dvi_font::handle_x_command): Avoid long->int warnings.

	* macros/tmac.e (TS):  Don't move @f back past the current
	position.

Wed Jul 25 09:11:08 1990  James Clark  (jjc at yquem)

	* ps/ps.c (main): Buffer stderr.
	* dvi/dvi.c (main): Likewise.
	* tty/tty.c (main): Likewise.

	* ps/ps.c (ps_printer::do_import): Improve error handling.

	* troff/input.c (abort_request): Use asciify.

	* driver/printer.h (printer::draw), driver/printer.c (printer::draw),
	ps/ps.c (ps_printer::draw), dvi/dvi.c (dvi_printer::draw): Make
	type of first argument int rather than char.  This works around a
	bug on the 68030 based Apollo using g++ 1.37.1.

	* tbl/table.h (class table): Add `keep' member.
	* tbl/table.c (table::table): Initialize `keep'.
	(table::add_vertical_rule): Set `keep' to 1.
	(table::do_top): Only emit table keep macro is `keep' is non-zero.
	(table::do_bottom): Likewise for table release macro.
	(table::do_row): Emit section keep macro even if the row is 0.

Tue Jul 24 08:35:07 1990  James Clark  (jjc at yquem)

	* macros/tmac.e (@C): Preserve the font family across the change
	in environments.

Mon Jul 23 10:15:23 1990  James Clark  (jjc at yquem)

	* lib/font.c: Initialize font::hor and font::vert to 1.
	(font::load_desc): Check the values of font::hor and font::vert.

	* lib/lib.h: Added definition of INT_DIGITS. Fix it so that it can
	be included in a C compilation.
	(iftoa): Use INT_DIGITS. Include lib.h.
	(itoa): Likewise.
	(as_string): Likewise.
	* tbl/table.c: Removed definition of INT_DIGITS.
	* eqn/box.c (box::top_level): Use INT_DIGITS + 1 instead of 12.
	* troff/input.c (input_input_requests): Likewise.
	* ps/ps.c (make_encoding_name): Likewise.
	(ps_printer::set_style): Likewise.
	(ps_output::put_number): Use 1 + INT_DIGITS + 1 instead	of 12.

	* tty/devascii/R.proto: Map fm onto '.
	* tty/devlatin1/R.proto: Likewise.

Sat Jul 21 12:45:07 1990  James Clark  (jjc at yquem)

	* tbl/table.c: Use ' instead of DELIMITER_CHAR in places where the
	argument to \w is at a different input level.

	* tbl/table.c (table::init_output): Define a new macro
	REPEATED_VPT_MACRO, like vpt but if in a diversion also
	transparently outputs itself.
	(table::define_bottom_macro): Use REPEATED_VPT_MACRO instead of
	vpt.
	(table::do_row): Likewise.

	* tbl/table.c (vertical_rule::print): Prefix the .sp -1 line with
	TRANSPARENT_STRING_NAME.

	* tbl/table.c (table::init_output): In the table release macro
	print an error message and don't produce any output if after
	issuing the need request the table still will not fit.  Also
	remove the diversion after bringing it back.

	* tbl/table.c (table::init_output): Define a new macro
	REPEATED_MARK_MACRO, like mk but if in a diversion also
	transparently outputs itself.
	(table::do_row): Mark row_top_reg using	REPEATED_MARK_MACRO. This
	is necessary because .TH might not call .T#.
	(table::do_top): Likewise TOP_REG.
	(table::define_bottom_macro): If TOP_REG is no longer valid, use
	#T - DOUBLE_LINE_SEP rather than #T. This is necessary because the
	table header might contain just the two top rules.

Fri Jul 20 10:51:42 1990  James Clark  (jjc at yquem)

	* troff/div.c: Implement new request `ptr' to print all traps.

	* troff/env.c (init_env_requests): Implement `.tabs' reg with
	init_string_env_reg.
	* troff/env.c (class tab_reg): Deleted.

Thu Jul 19 12:07:16 1990  James Clark  (jjc at yquem)

	* troff/div.c: New number register .pn returns the number of the
	next page as set by the pn request.

	* macros/tmac.an: Redid headers and footers.  Number each manual
	entry starting from 1 unless \nC is > 0, like Sun.  Added an
	optional 5th argument to .TH which specifies the manual name and
	appears in the center of the header.  Understand the X, P and D
	registers like Sun.

Wed Jul 18 10:23:31 1990  James Clark  (jjc at yquem)

	* troff/env.c (init_env_requests): New number register `.lt' to
	return the title length.

	* troff/node.h (class transparent_dummy_node): New class.
	* troff/node.c (class transparent_dummy_node): Provide member
	functions. 
	* troff/env.c (interrupt): Add a transparent_dummy_node, rather
	than a dummy_node.

	* troff/input.c (token::next): New escape sequence \).
	* troff/input.c (get_copy): Recognize \) in copy mode.

	* troff/input.c (input_stack::clear): New function.
	* troff/input.c (exit_request): Use input_stack::clear.

	* troff/token.h: Removed TOKEN_NO_PRINT_CHAR.
	* troff/input.c (token::process): Removed case TOKEN_NO_PRINT_CHAR.

	* troff/env.c: Move set_page_character to input.c.  Move
	page_character to input.c also.
	* troff/env.c (title): Split off the reading of the parts of the
	title into read_title_parts.
	* troff/input.c (read_title_parts): New function.  Check the
	input_level when testing whether a token matches the delimiter.

	* troff/input.c (exit_request): New function.
	* troff/input.c (init_input_requests): Bind ex request to
	exit_request rather than exit_groff.

	* troff/input.c (exit_groff): Call tok.next() before
	process_input_stack().

Mon Jul 16 09:47:23 1990  James Clark  (jjc at yquem)

	* troff/env.c: ifdef widow control support on WIDOW_CONTROL.
	* troff/env.h: ditto.
	* troff/input.c: ditto.

	* troff/env.c (environment::is_empty): Test pending_lines.

	* troff/env.c (environment::have_pending_lines): Removed.

	* troff/input.c: Add request to flush pending lines from the
	environment.

	* troff/env.c, troff/env.h: Add automatic widow control feature.

	* troff/input.c (exit_groff):  Do process_input_stack() after
	do_break() but before setting exit_flag to 2.

	* troff/input.c: Remove FLUSH_PENDING_LINES and
	TOKEN_FLUSH_PENDING_LINES. Instead, flush pending lines from
	environment after END_TRAP token seen, but only if there aren't
	any more traps still unfinished.
	* troff/token.h: Remove TOKEN_FLUSH_PENDING_LINES.

Sun Jul 15 10:50:08 1990  James Clark  (jjc at yquem)

	* troff/env.c: Rename the `retain_size' member of class
	pending_output_line to `no_fill'.

	* troff/env.c (title): When the line is output, make the
	retain_size argument !fill.

	* troff/node.h: Add `hyphenated' member to struct breakpoint.
	* troff/node.c (space_node::get_breakpoints),
	(dbreak_node::get_breakpoints):  Fill this in.
	* troff/env.c:  Allow specification of maximum number of
	consecutive hyphenated lines.

	* troff/env.c (environment::is_empty): Add test for !current_tab.

Sat Jul 14 11:23:01 1990  James Clark  (jjc at yquem)

	* troff/env.c (environment::hyphenate_line): Don't completely give
	up if the word is not to be hyphenated; continue so that breaks
	can be made at break_char_node's.

	* lib/lib.h: Only define INT_MAX if it's not already defined;
	undef INT_MIN if it's already defined.

	* Makefile: Make it easy to define CFRONT_ANSI_BUG.

	* lib/lib.h: If CFRONT_ANSI_BUG is defined, cast INT_MIN to long.
	This works around a bug in AT&T C++ 2.0 used with an ANSI C
	compiler.
	
	* macros/tmac.an (an-header): Set no-space mode.

	* macros/tmac.an (TH): Start a new page if necessary.

	* Started using ChangeLog at version 0.4.

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