CHANGES FOR VERSION 2.13
binaries now track which git version they are
support for LaTeX is updated to use \rmfamily, \bfseries, and so on
Fixed indentation issue https://github.com/nrnrnr/noweb/issues/24 
add \@nwbegincodelinewidth to help typeset code chunks in list items


CHANGES FOR VERSION 2.12
l2h and sl2h now support rules from booktabs package
l2h and sl2h now deal with \suspend and \resume from package mdwlist
l2h and sl2h now deal with \verbatiminput package verbatim
note to FAQ about \usepackage[T1]{fontenc}
root Makefile now has a default target that complains bitterly (Allan Adler)
get xchunks to track source locations
fix bogon in Hacker's Guide: @index nl takes no argument
totex didn't handle @line
improved German text from Pascal Schmitt
l2h and sl2h now make -- – and --- —
brace fix for 2.11 broke [[}]]; now fixed
improved German text from Johannes Wiedersich (closes Debian #418892)
\usepackage{vmargin} not \usepackage{vpage} (Hubert Chan; closes Debian #420614)
added an optional argument to Emacs noweb-mode to support desktop-read (NR)
added an option to l2h/sl2h to convert LaTeX double-quote ligatures to HTML 4 entities
NR has a new address
changes to noweb-mode.el to make font-lock work better (Christian-Lynbeck)
C code now compiles with gcc -Wall -Werror, though tricks with rcsid make me blush
awkname script needed to update roff scripts and lib/pipedocs (Chloe Lopez)
Partial support for Icelandic (Johann Oskarsson <johann@myrkraverk.com>)
added Lee Wittenberg's custom-code filter to contrib/leew
the noweb-mode command now sets noweb-chunk-vector when run
fix nountangle script to support multiple filters (Anon Sricharoenchai)
noscript shell-script trick by Greyson Fischer (added to contrib)
'getline' renamed (now part of POSIX standard) (Brad Larsen)
added missing control sequences to nwmac.tex (Sergio Spina)
Aharon Robbins is now Arnold Robbins <arnold@skeeve.com>
Point to Jim Pettigrew's installation instructions for Windows 7
noweb & other 25 yo scripts now quote shell variables correctly (Francky Leyn)
eliminated deprecated tmpnam() in favor of tmpfile(3)
Makefile now uses mkdir -p (to keep GNU Make from bleating)
added BSD-2 license (H/T Jonas Stein, Gentoo project)
Scripts no longer use insecure names in /tmp/; instead using mktemp

CHANGES FOR VERSION 2.11b - released 12 Jun 2006
Make noroff use -mm by default (Debian 218050)
Fixed flagrant errors in noweave -x -troff (but bad formatting remains)

CHANGES FOR VERSION 2.11a - released 20 May 2006
Clarify instructions for $PATH and $MANPATH (B Pierce)
Create examples/Makefile.awk (B Pierce)
Clarify documentation: unescaped << and >> not OK in docs chunk (R Hemmecke)
Add -lua option to docs2comments filter

CHANGES FOR VERSION 2.11 - released 6 April 2006
Braces did not render correctly in [[<<$\{a_i\}$>>]] (Albert Reiner)
From Kevin Quick, Windows hints and a new NOTANGLE.BAT
Generate postscript with -P cmz for better PDF (Francky Leyn)
Clarify for noweave -delay that the first doco chunk is before the first @
extended xchunks with -summary argument
Line in a code chunk opening with unclosed, unescaped << is OK (Ralf Hemmecke)

UNDO ME!  Make docs2comments filter tolerate embedded @xref stuff..
Added Windows XP help to FAQ (David Lemmon)
Noidx now calculates labels for a code chunk using the number of preceding
  definitions from the same @file, not the overall number
Change wording for \noweboptions{german} (Christian Lindig)
Need to insert \leavevmode in \sublabel so that new \@bsphack will work right
From Yann Dirson, new filters in contrib/ydirson.
From Fr'ed'eric Lin'e, some improvements in French translation (apologies to Moli`ere)

CHANGES FOR VERSION 2.10c - released 17 Jul 2002

Bug in noidx.nw caused tag NWD1 etc to be used in multiple files.
Cleaned up alignment tags in tables emitted by l2h.nw (Federico Di Gregorio)
Fixed some bugs in the HTML markup for the hacker's guide
Goes back to iconc, except for noidx.nw, which can't be compiled because
  of the 32-bit polynomial arithmetic

CHANGES FOR VERSION 2.10b - released 15 Jul 2002

Bug in xchunks.nw, around line 100 -- db never initialized (Stephen Edwards)
In local identifier cross-reference, enable breaks between pages 
   of multiply defined identifiers (option breakdefs)
Create a secret \noweboptions{breakcode} for those who want their
   code chunks broken across page boundaries
German is `Benutzt' not `Benutztt' (Johannes Huesing)
No longer suggests iconc; compiling with icont is now the default.

CHANGES FOR VERSION 2.10a - released 30 Mar 2001

Fixed problem in src/Makefile -- FAQ should be built by `source' not `all'

CHANGES FOR VERSION 2.10 - released 16 Jun 2000, but not officially

Added -matlab to nountangle (Uwe Brauer)
Added \nwblindhyperanchor to \weblabel (Andrew Swann)
Changed one more 'char c' to 'unsigned char c' in recognize.nw (Gilles ANDRE)
Change noweb.sty to support more than 26 code chunks on a page (F. Leyn)
l2h skips optional arguments with \includegraphics
fixed bugs in htmltoc having to do with nested anchors on one line
Added capacity for two more filters to noweave script
Fixed bug in autodefs.sml (including spaces in symbol chars)
Added autodefs.mmix
Added autodefs.asdl
Scripts for Plan 9 rc (Russ Cox)
Tinkered with noidx sortkey
Added \mbox{} to \nwnewline, so that spaces won't be eaten (John Cummings)
Added xchunks filter, per request of Mike Smith & Glenn Holloway
Replaced FORTH uniqueid heuristic with 32-bit CRC
Added pipedocs filter to pipe documentation chunks through commands
Added h2a (convert html to ascii) for use with pipedoces
Added docs2comments filter, with pipedocs and h2a, to replace nountangle
Added nwmtime filter; helps derive Zephyr web pages
Moved the official FAQ to html
Added multiple-language support to noweb.sty (Miguel Filgueiras)
notangle -L initial newline is a bug and will never be fixed (Harald Soleng)
Added \noweboptions{noxref}, intended for temporary use inside documents.

CHANGES FOR VERSION 2.9a - released 16 Feb 1999

Fixed bug in htmltoc that left multiple toc anchors


CHANGES FOR VERSION 2.9

Good support for hypertext using the `hyperref' package
noweave now finds uses in quoted code, the better to exploit hypertext
added support for emacs font-lock highlighting as comments to noweb-mode (Adnan Yaqub)
Document common -L options on notangle man page (Brett Presnell)
Fixed incompatibility with verbatim package (Rafael Laboissiere)
added contrib/leyn from Francky Leyn
noweb-mode.el no longer treats @x as chunk end for non-white x (Chris Milner)
Don't use signed char to index array of 256 in recognize.nw (Michael Herrmann)
Added explanation for WNT to FAQ.
Support \ quoting in argument to elide
Support multiple -R options on the same notangle command line.
Change tohtml so that noweave -latex+html doesn't protect anchor texts
   in a rawhtml environment (???)
Added to /usr/doc/noweb for Slackware binary distribution
Slackware binary distribution now includes emacs noweb mode.
Updated internal docs in support.nw to explain the great \nwlbrace trouble
Use gcc -ansi -pedantic in Makefiles.
Remove multicols environment from examples/wc.nw (Yotam Medini)
Change noweave and totex to support subscripting identifiers used in quoted code
Fixed bug in l2h (bad conversion of tables).
Make l2h of \section use CPS (for newline between \section and {)
Added letenv to l2h, and changed verbatim to use environment name as terminator


CHANGES FOR VERSION 2.8a

noweave complains if you use -x with -index or -indexfrom
installation now includes noweb-mode.el
noroots no longer treats uses in quoted code as real uses (David Bruce)
file INSTALL now notes that 'awkname' is always needed (Robert Solovay)
file INSTALL now notes that texhash(1) may be needed (Robert Solovay)
mnt (noweb script) now complains about chunks named <<*>> (Robert Solovay)
lots of rcs identifiers and names everywhere
all man pages should carry version numbers
Use Stephen Parker's htmltoc, with many bug fixes and improvements.


CHANGES FOR VERSION 2.8

fixed unbalanced brace in support.nw for nwmac.tex (Hartmut Henkel)
changed notangle script so notangle -L preserves tabs (Saul London, NR)
changed uniqueid in noidx to avoid everything except letters, digits,
	and a few known special chars.  fixes the Norwegian bug (Hans
	Husum) and also the non-Posix regexp (Christian Wagner)
update recognizer.nw to use 128-node recognizer for larger character sets
	as per Christian Wagner
$arkopts -> $markopts for noweave -v
noweave now uses \documentclass for headers
fixed a bug in tohtml ``impossible character to skip''
hacked \catcode \other for " in \setupcode, 
     which is better for german.sty even though \setupmodname is still wrong
added support for @fatal to all pipeline stages; 
     noweave and notangle now detect pipeline errors and exit nonzero
added Lee Wittenberg's changes to support.nw and totex.nw to support
     printing of index identifiers in different fonts
updated documentation to be consisten with latex2e, e.g., talk about
     the noweb 'package' not the 'document-style option'.
     Kept nowebstyle(1) for backward compatability.
added \nextchunklabel to support dotNoweb (replaces its \chunklabel)
massive improvements to l2h, including support for tables
moved nowebstyle and nowebfilters man pages to section 7
noweave -v shows @header and @trailer


CHANGES FOR VERSION 2.7d

noweb.sty steals \{ and \} in chunk names.  Bad dog! No biscuit!
Forgot to include [noweb] style in numarkup.nw
changed <- to &lt;- in tohtml and l2h, and similarly for ->
HTML output of noweb tools is now weblint-clean
didn't properly skip <!-- ...> in tohtml
bug fix for bad indentation when chunk starts at beginning of line
added many more control sequences to l2h
added % l2h closure, makes nr's \secn, \fig, and the like possible.



CHANGES FOR VERSION 2.7c

Fixed bug in l2h, wasn't treating quotes in @use correctly.
Added -autodefs pascal (a hack)
Fixed bug in tohtml, with noweave -option longxref was showing uses twice
Fixed ``black magic'' claim in man page to refer to -option longxref...
Fixed tohtml to make placement of anchors nest properly when possible
Underscores in filenames are now in FAQ
Added the htmltoc command


CHANGES FOR VERSION 2.7b

Changed module->chunk in error message 'undefined module name'
Added touch to `make source' in a forlorn attempt to eliminate once
      and for all the problem of sources and derived sources with
      identical timestamps
Added `make touch' in case CTAN screws up timestamps, and updated FAQ.
Disabled assertions in lexer (markmain.nw)
Added pointer to noweb home page to README
Mention sharpline in the man page entry for notangle -L 
@@ in column 1 now stands for a single @ sign.
Change my address from Bellcore to Purdue.
Preliminary support for hypertext with hyper.sty.

CHANGES FOR VERSION 2.7a

Move @xrev prevdef and @xref nextdef to appear before @defn, to
     support navigational aids as in Fraser and Hanson's book.
     Requires changes in totex and tohtml to delay xref output.
     Support.nw now makes long vs short a noweb option.
Hack noweave to pass -shortxref to backend on seeing `-option shortxref'
Offer shortxref support in tohtml.
Changed noidx to avoid putting anchor labels in empty documentation chunks.
Fixed bug in l2h; was treating saved ignore flag as text fun after copying bracket. 
tohtml dumped core if it tried to warn of bad tag with null arg
Botched local definitions in autodefs files
SHELL=/bin/sh in Makefiles
Improvements in l2h, including multiple citations.
Fixed Makefile in xdoc to build techrep with wc.tex now that examples have moved
Fix bugs in awkname; thanks to Steven Ooms for the bug report and the fix.
In INSTALL, noted special awk problems for HP-UX users.
Change noweb.sty to use \textwidth, not \hsize, to place use/def markup
Fixed bug in -autodefs.c (confusion around static storage class)
Quoted code no longer makes l2h forget what mode it was in ($[[x]]+1$)
Uses in quoted code (e.g., [[<<exported functions>>]]) are now
  formatted sensibly and with proper cross-reference.  As a side effect,
  lexical analysis is faster.

CHANGES FOR VERSION 2.7

New directory structure, new Makefiles.
Distributing gzipped tar file instead of compressed shell archive.
Added l2h filter to convert latex to HTML.
Added -markup option to tools
contrib/norman now has a numarkup, which is markup for nuweb
Fixed unmarkup to handle nuweb chunks, which don't end in newlines.
The awk versions of filters are even more inferior to the Icon versions, 
          and they are barely tested. I will fix bugs as they are reported.

CHANGES FOR VERSION 2.6d (which never left Bellcore)

New copyright, intended to make it possible to sell CD-ROMs containing noweb
Revisions to the Noweb Hacker's Guide
Added 'elide' filter to icon directory.
Changed totex to turn a reference to ??? into one to nw@notdef
Commented out references to \code and \edoc in support.nw 
	(too chicken to eliminate them completely)
Changed lib/tohtml not to use the awk 'length' variable --- mawk barfs
	(thanks to Bill Trost for bug report)
Changed tohtml not to plant anchor on < or & because that
	 could start an SGML tag (thanks to Bill Trost for bug report)
Awk version of tohtml used && in patterns; some awks couldn't handle it.
	(thanks to Mark Smucker for bug report)
Changed \filename to \nwfilename to avoid conflicts with some latex2e packages
Help for the most frequent problems now in INSTALL.
Fixed a bug that bit noweave -index when there are multiple definitions
	 of an identifier; tag of first defn was repeated instead of
         getting all tags (thanks to Michael Norrish for bug report).
noweave -html -x was producing local index stuff, but it shouldn't.
Decided -html shouldn't disable -noindex in noweave script
Improved tohtml so it needn't insert * for an anchor so often.
Changed notangle internally so it doesn't complain 
	if a chunk doesn't end with a newline (possible with nufront)
changed noweave so -index no longer forces a latex wrapper
Changed noidx so it won't use HTML specials in unique ids
Changes tohtml not to quote HTML in chunk names


CHANGES FOR VERSION 2.6c

Added -v option to noweave to show the pipeline.
A preliminary Noweb Hacker's Guide.

CHANGES FOR VERSION 2.6b

Added -autodefs c

Changed installation procedure so that source is no longer distributed
with contributed software --- you now must install noweb, then build
contributed software.

Bug fixes:

 - Makefile didn't create .../man/man1
 - noweave botched -x option, emitted index info anyway
 - markup complained, incorrectly, about [[<<]] in documentation.
 - noidx died if it tripped over an identifier used only in quoted code
 - tohtml wasn't inserting doc anchor into above_defns, so some xrefs
   that should have read `above' were coming out `below'
 - when one identifier was a prefix of another, as in
   Class and Class::member, finduses duplicated the prefix.


CHANGES FOR VERSION 2.6a

Fix bug in finduses that bit on the HP snake.

CHANGES FOR VERSION 2.6

For the HTML support
  - Invented lots of new @xref markup to support cross-referencing and
    indexing in a formatter-independent way.
  - Rewrote noidx and totex to push cross-reference and index support into
    the back end.
  - Adapted an HTML back end contributed by Bill Trost
Dave Love provided the bug fixes for latex2e.

CHANGES FOR VERSION 2.5:

Improved Source Code

Several parts of the source code have been rewritten in noweb.  I
especially call your attention to the contents of the shell, lib, and
tex directories.  Reading tex/support.nw will help you tinker with
formatting. 


Enhanced Latex Support

Includes INCOMPATIBLE changes to options accepted by noweave (and
noweave's default behavior).  noweb now supports an index of
identifiers and identifier cross-reference in a language-independent
way.  For more information, see the man page for noweave, especially
the -index option.   The man page for noindex tells how to build
indexes for large, multi-file documents.

I have added a `noweb' command that acts much like Preston Briggs's
`nuweb'; it extracts all the source programs and also writes a LaTeX
document with full cross-referencing.  See the man page for details.

latex support has been improved by changes to noweave, the noweave
cross-referencer, and the noweb document-style option.  Dave Love and
Jon Krom provided impetus for some of these changes in the best
possible way; they sent code.  Improvements include:
  -- noweave now generates latex headers by default.
  -- Code chunks are broken across pages only when they are more than
     a page long. (Thanks to Dave Love.)
  -- Thanks to Dave Love, cross-referenced definitions that appear on
     the same page are now numbered 7a, 7b, 7c, etc. (optionally 7.1,
     7.2, 7.3, or just plain 7; see the noweave man page).
  -- There is a `noweb' pagestyle, which puts source-file names and
     dates on the header line.  It is the default page style for noweave.
  -- noweave inserts no extra newlines, so the line numbers are the
     same in the .tex and .nw files (Dave Love's suggestion; a major win).
  -- By using noweave -delay, you can put a latex preamble in the
     first documentation chunk, and noweave will delay \filename and
     \begindocs until after the preamble, which becomes a WEB-like
     ``limbo'' area (suggested by Dave Love, Jon Krom, and others).
  -- noweave now has a -filter option that lets you name a
     cross-referencer or prettyprinter on the command line.
     You can try Jon Krom's cross-referencer by using 
	noweave -filter $LIB/noxref.krom
  -- notangle has a -filter option that you can use to implement
     slightly different semantics, such as Knuth's ``...''
     abbreviation convention. 
  -- The awk version of the cross-referencer is now almost as good as
     the Icon version; the sole remaining difference is that the Icon
     version ignores case when sorting; the awk version does not.
  -- Bug fixes in noweave's handling of special characters in chunk names.
  -- Many of the shell and awk scripts are now noweb files.
  -- \chunklist is now \nowebchunks, and it need not appear on a line
     by itself.  \nowebindex provides an index.
  -- The TeX support is now somewhat documented; see tex/support.nw
  -- Support for latex's New Font Selection Scheme (whatever that is),
     thanks again to Dave Love.
  
Finally, Kostas Oikonomou has contributed a simple prettyprinter for
Icon programs, and Conrado Martinez-Parra has contributed a
prettyprinter for Dijkstra's language of guarded commands.  I have
made both suitable for use with noweave -filter.


Bug Fix

The code that was supposed to prevent a chunk from including itself
didn't work at all.  So
<<*>>=
Forever <<*>>
@ made notangle very unhappy.