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1.1 root 1: Jul 14, 1987:
2: Fixed obscure bug causing incorrect indentation of .mc output.
3:
4: Jul 2, 1988:
5: \X now preserves spaces even when contents are diverted.
6:
7: \N code safer -- NTRTAB and NWIDCACHE enlarged.
8:
9: Jul 4, 1988:
10: replaced the sbrk nonsense in n3.c by calls to malloc.
11:
12: \N now tests against proper font size.
13:
14: installed Jaap Akkerhuis's code (mutatis mutandis) for
15: permitting up to 99 fonts, swapping them into font pos 0
16: as needed. fixes the long-standing problem of having
17: multiple font changes on a single output line.
18:
19: Sep 19, 1988:
20: added abortive code to handle built-up characters by
21: passing something through as \D'b...'. never used.
22:
23: Oct 2, 1988:
24: default is now -Tpost
25:
26: Feb 1, 1989:
27: wait for .pi pipe to empty before exiting
28:
29: Apr 5, 1989:
30: .fl and \X now cause output of size, font, hpos and vpos.
31: this is necesary for postprocessors that intend to insert
32: independent material, such as postscript.
33:
34: Apr 12, 1989:
35: fixed bug in n2 that failed to suppress printing of \!
36: output when a -o was in effect.
37:
38: Apr 23, 1989:
39: Fixed bug in n9 that caused core dump with unterminated
40: \l command, like \l'1.5i
41:
42: ptflush no longer called when -a is on.
43:
44: May 25, 1989:
45: Another bug in \l, this time when width is 0. Not installed,
46: since it's in the new font version.
47:
48: July, 1989:
49: A major internal change: font information is read in ascii
50: instead of the weird binary format of makedev (which is now dead).
51: character names need not all appear in DESC; new names that
52: appear when a font is used become part of the set of known names.
53:
54: There are some flaky bits here (it's conceivable that some \N
55: number will collide with a real name), and it's probably 10-15%
56: slower. Tant pis.
57:
58: As a by-product, nroff no longer compiles. I'll probably get
59: back to this, but an alternative is to bag it once and for all.
60:
61: Aug 9, 1989:
62: Changed .tm so it outputs \e, \%, \-, \&, \(blank).
63: This might break indexing code.
64: Only in the new version, as are all subsequent fixes.
65:
66: Sep 9, 1989:
67: Fixed internal representation of \D'~...' so that it
68: is immune to .tr ~ and variations. No external change.
69:
70: Oct 10, 1989:
71: Modified flush code to always put out \nH instead of sometimes h.
72: This makes it easier to parse the output for positioning.
73:
74: Oct 11, 1989:
75: It is now permitted to do an explicit change to font S.
76: It is not clear what will break (though nothing seems to have).
77:
78: Nov 7, 1989:
79: Fixed hyphenation for nov-ice, ad-vice, de-vice, ser-vice, *-vice.
80:
81: Nov 17, 1989:
82: A number of small changes preparatory to getting rid of nroff.
83: The argument -Tnroff or -Tnroff-12 changes some internal values
84: so that the predicate .if n is true and certain arithmetic operations
85: are done as if nroff. This design is not yet final.
86:
87: Dec 4, 1989:
88: Another wart to the \X code, to try to preserve blanks in all situations.
89:
90: Dec 12, 1989:
91: Removed the .! command, an undocumented synonym for .sy.
92:
93: Dec 7, 1990:
94: .fp 3 V VERYLONGNAME used to truncate the name to 10 chars; fixed.
95:
96: increased the limit on FBUFSZ for tables with very long fields.
97:
98: changed atoi1() to use double to avoid intermediate overflow.
99:
100: moved filenames like /usr/lib/font into tdef.h for easy change.
101: removed some dreggish definitions.
102:
103: cleaned up non-portable error printing stuff; fixed up some messages.
104:
105: Dec 27, 1990:
106: converted to ansi c, based on some work by ken thompson, but not
107: as thoroughly as he did. there is a shell script unansi and an awk
108: program cvt that will help you step back in time if you do not have
109: an ansi c compiler.
110:
111: moved the special-name characters up to 256 instead of 128, although
112: done in terms of ALPHABET, so one can pass 8 bit characters through.
113: removed lots of 0177's and similar numbers. input is now not filtered,
114: and if a character with the 8th bit on comes in, it will go out again.
115:
116: fixed t11.c to read character names in hex or octal as well as
117: single-character ascii.
118:
119: unknown characters are now carried through with width = spacewidth.
120: needs a way to set widths.
121:
122: removed all signal handling from troff. you signal, you die.
123:
124: added -d option to print version number.
125:
126: Jan, 1991:
127: added tex hyphenation, using standard tex data files, but not the
128: elaborate compressed trie, which is a lot of trouble to save maybe
129: 40k bytes. this appears to run at exactly the same speed as before.
130:
131: so far this stuff reads into a fixed size array; that should change.
132: it should also be possible to deal with multiple languages.
133:
134: the command .ha sets the algorithm. .ha 1 => tex, with troff rules
135: if tex doesn't hyphenate; .ha 0 gives troff rules, and .ha resets
136: to the default, which is tex. the hyphenation algorithm is part of
137: the environment, a nod to a future in which i handle more than one
138: language.
139:
140: replaced the fixed size corebuf array for string/macro storage by
141: a dynamic structure that can grow.
142:
143: this appears to slow things down by maybe 3%. the code is about
144: the same complexity.
145:
146: Feb ??, 1991:
147: working on dealing with large alphabets, notably kanji.
148: added "defaultwidth" to font descriptions, for characters
149: not given an explicit width.
150:
151: Mar 5, 1991:
152: huge table sizes for kanji.
153:
154: Mar 19, 1991:
155: fixed bug that prevented .rd from working with new corebuf organization.
156:
157: fixed bug that caused .ig inside diversions to give bad storage
158: allocation. thanks to arthur david olson, whose fix was on netnews
159: 3 years earlier.
160:
161: Apr 14, 1991:
162: added an extra redundant call of ptfont in setfp, since it appears
163: that some versions of adobe transcript assume that an "x font" command
164: means to change the actual font as well. the fix preserves the current font.
165: thanks to david brailsford and friends for spotting the problem.
166:
167: fixed up tests in alpha() in n8 to defend isalpha() against too-big inputs.
168: punct() argument had wrong type too. thanks to rich drexler and peter nelson.
169:
170: May 6, 1991:
171: increased size of hyphenation exception buffer to 512 from 128
172:
173: May 13, 1991:
174: moved evaluation of \(xx from copy mode to non-copy mode, so that
175: weird character names wouldn't get reevaluated in argument parsing.
176: installed july 27.
177:
178: July 27, 1991:
179: added test in setn in n4 to fix bug that permitted things like
180: \n (ab to work "properly". thanks to jaap for finding and fixing.
181:
182: added paranoid testing in t11 to make sure font files look ok.
183:
184: Nov 2, 1991:
185: merged nroff into troff, based on Ken's plan 9 version.
186: merged nii.c into ni.c, removed tw.h, etc. more work needed
187: to make this stuff cleaner.
188:
189: Nov 8, 1991:
190: add a maplow(towlower...) in n8.c to handle brain-damaged libraries.
191:
192: Dec 13, 1991:
193: parameterize the font directories, etc., so can be set in makefiles.
194: added -N argument to run as nroff.
195:
196: Dec 17, 1991:
197: copy 3rd argument in .fp commands to x font ... lines when it contains
198: a /, for testing fonts locally.
199:
200: Jan 2, 1992:
201: fiddle setfp so doesn't put out font stuff if -a turned on.
202:
203: Jan 28, 1992:
204: fixed .tm \(mi to print something sensible. thanks to jaap.
205:
206: Mar 1, 1992:
207: input mechanism rearranged to use getc() instead of stack of
208: explicit input buffers. 5-10% slowdown.
209:
210: Mar 12, 1992:
211: rearranged tests in popf so that .so is closed properly before
212: moving on to the next macro package.
213:
214: Mar 13, 1992:
215: \n(sb initialized wrong in setwd().
216:
217: TYPESETTER=foo troff -Tpost used foo instead of post.
218:
219: Mar 30, 1992:
220: added test in getword to avoid hyphenating things with motions
221: (and avoid a core dump sometimes too).
222:
223: Apr 5, 1992:
224: fiddled n7.c and added _nmwid to the environment, to add a
225: 5th argument to .nm: the maximum number of digits in any
226: line number. default is 3, which was previously hardwired in.
227:
228: added jaap's code for yet another register which actually delivers
229: a string, called .S (so it can easily go in the switch in setn()
230: in n4.c); it delivers the current tabstop and alignment modes in
231: a format suitable for a subsequent .ta \n(.S command:
232: .ds T \n(.S
233: ...
234: .ta \*T
235:
236: Apr 17, 1992:
237: casefi(), n5.c: .u register should be 0 or 1, not incremented
238: with each .fi.
239:
240: May 12, 1992:
241: n1.c: need p++ after strrchr to skip / in program name.
242: thanks to Rich Drechsler.
243:
244: May 22, 1992:
245: added extern decls to e.g., void Tchar (*hmot)(void) in tdef.h
246: and added definition to ni.c, so pointers are defined explicitly.
247: makes it work on turbo c++ and probably others.
248:
249: changed a couple of isdigit's and isgraph(getch()) to avoid
250: multiple evaluation (even though it shouldn't happen).
251:
252: Made /usr/bin/nroff a shell script.
253:
254: Jun 5, 1992:
255: added tests to t.twrest and t.twinit to avoid 0 deref in
256: n2 and n10, for nroff -t xxxxx. thanks to Rich Drechsler.
257:
258: Jul 12, 1992:
259: added .pt request to trace macros and requests (from jaap).
260: .pt N Print trace of macros (N=1), requests (N=2) or both (N=3)
261:
262: Jul 21, 1992:
263: added extra test in nextfile() to pop current input file
264: only if not in .nx command. thanks to jaap.
265:
266: added test in getword() to avoid hyphenating after \z character,
267: which prevents any hyphenation inside \X'...'. thanks to jaap.
268:
269: added, then removed, code in getword() to prevent hyphenating
270: anything shorter than 6 characters. looks like it changed a
271: lot more than i thought.
272:
273: Aug 28, 1992:
274: removed call to popi from rdtty(); it was eating up the
275: rest of the macro if it was used from within one. (thanks, jaap)
276:
277: Oct 18, 1992:
278: replaced 32767 by INT_MAX in several places to allow for long pages.
279: tnx, jaap.
280:
281: Dec 1, 1992:
282: attempt to get back to clean state of Oct 18 after inserting
283: and backing out changes to detect bad conversions in .nr.
284:
285: cleanup of makefile, editing of README, to get rid of old drivers.
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