12-06-06 ppline.c: preserve hosted sync even for normal sync
12-02-29 pp.probe: handle predefined function-like macro definitions
12-02-14 ppproto.c: fix "already noticed" logic
11-03-15 ppop.c: add ppok() readonly check for subset of ppop(PP_*)
11-03-02 ppop.c,ppcontrol.c: use ppset() to handle readonly values
10-09-01 RE errors => exit(2)
10-09-01 ppcall.c: no disgnostic for 0 actual args for 1 formal arg
10-06-29 ppargs.c: ignore -H<number> (hpux /opt/langtools/lbin/cpp.ansi)
10-06-16 ppsearch.c: try parent prefix if -I- include search fails
10-06-01 sync with ast api 20100601
09-02-02 pp.probe,probe.win32: check for compiler supplied __FUNCTION__
09-02-02 ppop.c: include pp_default.h/probe at end of builtin script
09-01-20 probe.win32: elide #pragma comment.*linker.*manifest
09-01-06 ppcall.c: fix macro definition overwrite bug -- I know
09-01-05 ppcontrol.c: fix multiple include guard for #include outside guard
08-11-15 ppsearch.c: '\\' => '/' in first step; msvc complains about '\\' in #line!!
08-10-31 ppsearch.c: relax pp:nomultiple pedantry
08-10-30 pplex.c: handle =#x S_CHRB|SPLICE bug
08-05-11 ppproto.c: fix proto test 10 regression
07-09-21 ppproto.c: add "Public Domain" to the noticed list
07-06-12 pplex.c: finish -D:preserve logic update for imake
07-06-07 pplex.c: handle -D:preserve S_CHRB splices
07-06-04 ppsearch.c: only apply pp:chop ?old?new? if original not found
07-03-11 add -D-Y pp:pedantic, PP_WARN macro formal parenthesis checks
07-01-26 pp.def,probe.win32: add _WCHAR_T_DEFINED
06-09-23 ppop.c: check -I <dev,ino> for c and TYPE_HOSTED|TYPE_VENDOR attrs
06-09-23 pplex.c: add HOSTED check for "/* appears in // comment" -- doh
06-09-05 pp.probe: add version stamp comment
06-06-29 pp.probe: gcc pp:linefile probe (otherwise it can dump!)
06-06-28 ppproto.c: fix inappropriate __PARAM__ insertion
ppfsm.c: handle compatibility ul numeric qualifiers
06-02-28 probe.win32: add wchar_t probe
06-01-11 pplex.c: fix rpcgen pp:passthrough header splice bug
05-12-16 pplex.c: fix imake pp:passthrough comment splice bug
05-07-31 pplib.h: finally trust __STDC__ headers
05-04-11 pplex.c: fix '"a" #s' catliteral + stringize bug
05-03-29 pp.probe: check $? and stderr messages for pp:lineid
05-02-20 probe.win32: handle /platformsdk mount
05-01-11 ppargs.c: fix -I-S docs
ppinput.c: ppproto() only for COMPATIBILITY or PLUSPLUS
04-10-22 ppproto.c: handle `type var[x][y]' arg prototype
04-10-01 pplex.c: really fix directive hidden newline logic
04-08-31 pplex.c: fix directive hidden newline logic
ppcall.c: fix '(' peek bug that missed the MARK
04-08-30 add pragma pp:pragmaflags PP_PRAGMAFLAGS, pp:system_header
04-08-11 ppproto.c: intercept "#(define|undef) extern" for __(EX|IM)PORT__
04-07-23 probe.win32: generalize #include dir order search
04-07-22 ppsearch.c: access() => eaccess()
04-05-20 ppproto.c: don't __PROTO__ `int fun __P((int));'
04-04-15 probe.win32: sync up with uwin 2003-08-06 master -- oops
04-04-01 pp.probe: add stdinclude usrinclude path cleanup
04-02-29 ppproto.c: fix bug that skipped prototyped check during notices check
ppproto.c: recognize `Copyright nn'
04-02-14 ppproto.c: comment[0]==0 => no notice
04-02-11 Makefile: fix %.yacc to handle cross-compile
03-12-12 ppcall.c: missing macro actual warned but expanded
03-11-12 ppexpr.c: fix premature #if expression token strip
03-06-21 ppproto.c: fix T_INVALID ? splice bug that did 0?val => 0?vaL
03-06-10 ppargs.c: add -D-d and -D-m
ppargs.c: add gnu options { -dD -dM -imacros -include -lang-* -lint }
03-05-19 pplex.c: fix stray SKIPMACRO bug
03-05-18 ppcall.c: add SYM_FUNCTION '(' peek to avoid inappropriate ungetchr()
03-04-30 pp:mapinclude hosted <std.h>="." will search only hosted dirs
pp.probe: add pp:mapinclude probe for namespace incursions
03-04-29 ignore()=>ppmapinclude(), add pp:mapinclude
03-03-25 ppop.c: PP_RESERVED now deletes old symbol before redef with lex value
03-03-14 pp.probe: fix the #include_next probe
03-02-28 ppsearch.c: fix -MM bug that missed prefix include hosted mark
03-02-18 pplex.c: handle COMPATIBILITY \" and \' in macro actuals
03-01-23 probe.win32: mingw32 tweaks
02-12-17 ppargs.c: document -I-!
02-12-06 -I- pp:noprefix otherwise pp:prefix default
02-11-29 probe.win32: added __INTSIZE, drop dm pp:noallmultiple
02-11-26 pp.def: add STDC_HOSTED
probe.win32: add C95 and C99 STDC predefined macros
02-10-30 ppfsm.h: add boundary check to IDSTATE()
02-10-18 probe.win32: update for mingw
02-10-15 ppsearch.c: if PLUSPLUS && not found && no suffix then try with .h
02-10-10 pplex.c: fix does not end with `newline' bugs
02-09-21 pp.probe: add pp:nocatliteral test
02-09-10 pp.tab: add pp:passthrough to match -D-P docs
02-08-30 probe.win32: fix for borland cc -E
02-08-22 ppexpr.c: add __SOURCE__ and #match(string,pattern)
02-06-25 ppproto.c: fix pragma search bug that stopped after 8 comment lines
02-06-11 ppsearch.c: fix ... next include search to skip *all* intermediates
02-05-28 probe.win32: updates for { mingw }
ppsearch.c: don't use inherited prefix for <...> -- duh
02-05-24 ppcontrol.c: simplify getline() space canonicalization
probe.win32: updates for { digital-mars borland lcc }
02-05-20 ppcontrol.c: update to use regsubcomp(),regsubexec()
02-05-09 ppcontrol.c: inhibit `EOF in directive': newline warning will catch it
pplex.c: inhibit `newline in character constant' for hosted directives
02-05-06 probe.win32: add more win32 compilers
02-04-15 probe.win32: handle long long unsigned int
02-04-12 ppproto.c: fix NOTICED check
02-03-15 ppproto.c: fix cpp pp:compatibility double line sync memory fault
02-03-11 pplex.c: add pp:modern to emit \a \v instead of octal forms
02-02-14 ppargs.c: fix -D or -U as last arg core dump
02-01-24 pplib.h: use vmalloc(Vmregion) if _std_malloc
02-01-23 probe.win32: add more msvc predefined macro candidates
02-01-14 ppproto.c: #pragma prototyped noticed -- has notice comment
02-01-10 ppproto.c: fix PROTO_FORCE|PROTO_PASS bug that disabled PROTO_FORCE
02-01-08 pplex.c: fix HEADEREXPAND|HEADEREXPANDALL logic
01-11-22 pplex.c: add pp:headerexpandall for gcc vs. msvc <...> expand diff
pp.probe: add pp:headerexpandall test
01-10-20 pplex.c: fix pp:splicespace inside "..."
01-09-11 ppinput.c: use pathnative() for native fs representation
01-08-31 pp.probe: handle -Dmacro(args)=value
01-08-11 ppcontrol: fix ... and __VAR_ARGS__ for C99
ppsearch: fix SEARCH_NEXT bug that skipped the include stack
01-08-06 ppproto: preserve #! first line for # comments
01-07-17 gentab.sh: fix ksh test to omit pdksh (typeset -u fails)
01-06-26 ppproto.c: fix another buffer boundary bug that didn't preserve OTHER
01-06-06 ppsearch.c: list PP_FILEDEPS headers once
01-05-24 pp.probe: fix pp:hostedtransition probe: only suncc can __STDC__==1?
01-04-25 pp.probe: split macro probe files for compilers that have #line limits
01-04-16 pp.tab: add pp:splicespace for mvs jcl decks -- the 60's live on
01-04-13 ppbuiltin: add __FUNCTION__ cache for functions that span the buffer
01-03-08 pp.tab,ppbuiltin,ppcontrol,probe: add pp:hostedtransition
01-02-14 ppcall.c: fix macro(tuple*) bug that truncated macro arg expand buffer
pplex.c: fix # inside pp:pragmaexpand
ppproto.c: fix buffer boundary bug that lost call nesting
ppproto.c: add realloc prototype and memcpy=>memcopy strcpy=>strcopy
01-02-09 ppsearch.c: fix another pp.include null dereference
01-02-07 ppcall.c: fix stack inequality checks
ppcall.c: handle trailing \ in macro args
01-02-06 fix readonly buffer write (cpp test 07:2873)
01-02-04 fix -M* to properly handle .cxx .cpp .C input
fix IN_BUFFER pop bug that did not reset the token pointer
01-01-01 pp:headerexpand: space ok if not IN_MACRO
ppcall: hide if IN_FILE|IN_MACRO|IN_EXPAND
pplex: don't complain about ^L or ^Z as last char in file
ppsearch: fix #include <.../foo.h> loop
ppcontrol: manulally increment IN_RESCAN error_info.line
00-12-25 add EXPOSE to expose hidden macros (for #import ...)
probe.win32: add cc path *and* args to first line to avoid hash clash
pp.probe: filter out invalid symbols for predefined macro scan, duh
pp:headerexpand: limit expansion to IN_MACRO
00-10-31 __STDC__==0 if HOSTED && _UWIN
00-10-26 pplib.h: change SEEK_SET to O_RDONLY for aix
00-10-17 pp.probe: __IMPORT__ => __STDPP__IMPORT__
00-09-18 add __FUNCTION__=#(FUNCTION), #define <a b> c
pp.probe: add probe_longlong
probe.win32: add #define <long long>
00-09-11 add pp:noproto (NOPROTO pp.option) to disable ppproto()
00-09-01 ppproto: fix buffer slide bug
pragma: add pp:pragmaexpand to expand pragma args
ppcontrol: always disable pp:* pragma expansion
ppcall: fix pp:hide buffer clash
00-06-01 pplex: fix "\\U" and "\\u"
00-05-22 ppsearch: fix uwin #include <C:/foo/bar.h>
00-05-16 probe.win32: update reserved word list
00-05-09 ppcontrol: fix C++ macro >+> invalid fuse
ppcontrol: 'macro' expansion only for COMPATIBILITY | TRANSITION
c9x: up to date with proposed standard
00-04-01 pp.tab: add allpossible and ALLPOSSIBLE
ppmacref: fix ref inside literal catenation
00-02-14 pppopen(): general comments with "bme" (begin middle end) string
99-11-19 is[a-z]*( => ppis[a-z]*(
ppproto: "..." [A-Z_]+ "..." ignores [A-Z_]+ if PROTOMAIN
99-11-11 ppproto: use astlicense()
99-10-31 ppproto: add PROTO_SHARP, update license parse
pplex: fix some MARK bugs seen by #define X "A B <C@D>"
99-10-01 add pp:stringsplit for "...\\n..." => "..."\n"..."
add pp:lineid to match PP_LINEID
99-07-17 ppbuiltin: fix getline() canon spacing for numbers
ppsearch: fix FILEDEPS not found \\n print
pplex: fix spurious FILEDEPS '.' empty character constant message
ppargs: fix usage error call and error_info.id default value
ppproto: fix up copyright notice for ksh93 style .author file
ppproto: check if notice text if file path
99-06-02 ppproto: add __MANGLE_package_DATA__ & __MANGLE_package_FUNC__
99-05-26 ppcontrol: all pragmas but prototyped need pp:
99-05-25 ppargs: long options
99-05-22 ppproto: changes for full ast vs. PROTO_STANDALONE
99-05-09 ppinput: add #pragma pp:native and (pp.option&NATIVE) for native paths
99-04-22 ppproto: finish type=open notice
99-02-11 #define __STDC__ #(STDC); demote __STDC__ to 0 for HOSTED (thanks sun)
99-02-04 pplex: joined strings separated by \\\n
99-01-11 probe.win32: add _UWIN predef
98-10-20 pplex: a few more (HOSTED|RELAX) checks
-D:preserve throws a bunch of stuff -- great for imake (yuk)
98-05-11 pplex: fix "..." \n off by one line count
98-02-14 ppcontrol: fix HEADEREXPAND missing NUL
98-01-23 ppproto: add _GNUC_ to _WIN32 check
ppfsm: don't optimize for hp.pa
97-11-11 ppcontrol: fix recursive use of pp.hdrbuf for HEADEREXPAND
97-10-31 ppmacref,pp.h: add ppmacref sum arg -- some parts assumed it!
97-10-01 pplex: loosen HEADEREXPAND check
97-08-11 pplex: fix COMPILE pplex() bug that did not reset NEWLINE for S_MACRO
pplex: PP_PRESERVE does not pp.pragma <token> ... # <pragma-stuff>
pp.def: add UWIN
ppcall: fix macro actual arg error checks
97-07-17 ppproto.c: C++ __INLINE__ prefixed with extern __MANGLE__
ppop.c: fix PP_RESERVED T_* lookup
97-05-09 pp.def: add MVS :architecture:
ppfsm.c: change C_* pseudo codes to not clash with ebcdic
pp.probe: fix stdc.$src sed script
97-04-01 ppcontrol.c: fix tokop() for PP_RESERVED
96-12-25 add ms #@ charize to complement # stringize
pp.probe now detects preincludes
ppproto: allow #ifdef'd function definions before {
ppproto: NoN() is not a function
ppargs.c: fix -M{DGM}*
96-12-06 add pp:headerexpand for ms that expands macros in expanded <...>
96-10-31 a few more line sync tweaks for EDG C++
96-10-11 fix pp:macref off by one for standalone pp (big suprise)
96-10-01 -D:macref -D-L -> #line (n-2)\n#pragma pp:macref ...
96-08-11 fix transition macro expansion
compatibility \" or \' does not start quote
96-02-29 use <hashkey.h>
drop ungetchr() in ppcall that modified macro values
tighten the DEBUG PANIC case in ppcontrol.c
unify #architecture() and #machine() probe
add POSIX,WIN32,X86 to pp.sym
tweak pp.probe
96-02-14 pp:noallmultiple works on hosted files too
fix #define /* EOF loop
96-01-31 fix ## as arg to stringize macro to have ## value, not #
add nonstopux and SYSTYPE_SVR4 to pp.def
96-01-01 AT&T Research now
fix catliteral line sync line number bug
ppproto() converts non-directive <num>u to (unsigned)<num>
switch to <regex.h>
95-10-31 fix PP_COMPILE PP_TRANSITION bug that didn't allow space before #
fix PP_TRANSITION \newline in definition complaint
95-10-11 fix ppproto() PROTO_PLUSPLUS bug
change ignored pp.incref PP_SYNC_POP to PP_SYNC_IGNORE
add PP_PEDANTIC to handle gnu oversights (can't beat em ...)
add memfatal() call
relax newline in quote semantics
proto inline -> __INLINE__
fix __INLINE__ proto def for __GCC__>=2
95-08-11 pp:preserve for easel (aka IFS) and imake
fix pp:reguard ## macro output
fix MARK PANIC with CATLITERAL
PP_INPUT *.(s|S|as|AS|asm|ASM) implies pp:nocatliteral pp:spaceout
ppargs() can't use isid() until after FSM_INIT
-D#... for assert, -D%... for directives
__STRICT_ANSI__ && __GNUC__ requires -pedantic for PP_STRICT
#include <.../x> for include_next
95-05-09 fix tokop() bug that concatenated adjacent strings
don't concatenate directive string literals in proto
restrict pp.probe hostinfo output to the first token
fix EOB/EOF pplex() nonterminating loop
unused var cleanup
add pp:reguard to emit #define and #undef (for C++ templates)
add a few ppproto '\r's for NT
fix T_BUILTIN ppsymbol -> ppsymkey pun
fix pp:stringspan `#define x "' hang
95-04-01 fix pp:hide for macros defined before the hide
fix pp:map getline space canonicalization
fix proto `<digits>[uU]'
proto does // comments by default (fixes bug introduced 07/17/94)
proto does "..." "..." string literal concatenation
spice up proto copyright comments for nonexclusive license
add hosttype assertion
fix proto `typedef type fun(args)'
proto copyright finishing touches
fix overzealous "empty character constant" message
95-02-14 pp:nopredefined probe info defines are now pp:builtin
clean up pp:hosted conflicts
tighten up unknown directive warning
PP_INPUT *.(s|as|AS|asm|ASM) implies pp:nocatliteral pp:spaceout
change newof(0,char,n,0) to newof(0,char,0,n) if 0 init not needed
don't emit unkown directives inside #if 0 ... #endif
95-01-19 *strict-* does not force STRICT
token##null-last-variadic-arg consumes token (to match gcc)
variadic actuals call be one less than arity (to match gcc)
fix PLUSPLUS digraph bug that lost comment state
tighten up PLUSPLUS //, /*, */ interaction warnings
macro formals in "..." for COMPATIBILITY|TRANSITION
macro formals in '...' for COMPATIBILITY|TRANSITION|!STRICT
STRINGSPAN allows '\n' in '... too
add PP_SYNC_* flags for pp.incref arg 3
add PP_SYNC_INSERT for invented file references
fix C++ fsm bug that popped out of comment in // /* */ ...
PP_INPUT *.(s|S|asm|ASM) implies pp:nocatliteral pp:spaceout
95-01-01 avoid string literal concatenation in pp.probe #if #predicate() tests
fix pplib.h memcpy,strncmp PROTOMAIN prototypes (its a nop tho)
94-11-11 fix readonly memory reference in refill
add C++ digraphs (digraph = --trigraph)
add C++ T_EXPLICIT -- did dos take over C++?
fix improper ppproto() C++ __PARAM__ expansion
94-11-01 allow #include string header arg concatenation (yes, its not ansi)
#macdef macros are recursive
94-10-01 fix C++ } loop in ppfsm/refill
T_NOISES consumes symbol and optional paren group
__builtin_* T_NOISES by default
fix "..." "...MARK..." join
fix STANDALONE */*comment*/
94-09-11 fix pp.probe cp+strip with chmod u+w
94-08-11 add -I<vdb-archive> to handle pax -x ppar header archives
fix -D-Q header checkpoints
add `pp:chop prefix' to chop prefix/ from include prefix/*/*
add pp:keyargs for key=value macro formals/actuals (not for C!)
94-06-01 fix ppcontrol/tokop() that botched pp:id, etc.
add pp:plussplice to handle cfront // \<newline> ignorance
inhibit trigraph conversion for pp:compatibility, duh
new C++ keywords enabled by pp:keyword
proto: int fun xxx((yyy)) is macro call, not decl
fix !ALLMULTIPLE pp:load to SKIP between duplicated line syncs
fix PP_DUMP for pp:noallmultiple, optimize pp:load format
fix CPP CACHEOUTX() buffer boundary bug
94-04-01 drop warnings for -X*
fix ppproto() %% in comment bug for yacc proto
PP_COMMENT now truncates comments to MAXTOKEN-4
94-03-01 no pp:truncate for #pragma pp:macref
94-01-01 fix STANDALONE+PP_TRUNCATE fsm macro bug
drop __VOID__ from ppproto.c
93-12-01 release
93-11-11 fix PP_COMPILE+PP_TRUNCATE=8 bug for continue,unsigned,etc.
add PP_LINEBASE for compilers that botch long line sync paths
fix #if unsigned promotions
aggressive interactive line splice flush
fix #else inside multiline null dereference
fix "..." newline space # COMPATIBILITY CATLITERAL bug
fix m(a)b compatibility token pasting [cpp/test/ess.01.c]
fix nested @X mark bug [cpp/test/net.02.c]
93-10-11 add FSM_COMPATIBILITY for floating point hex -- yo ansi, anybody home
add #else if|ifdef|ifndef for COMPATIBILITY but with warning
drop PP_HOSTED, add ppop(PP_CDIR|PP_HOSTED,"-",n), -D-I for pp:cdir
93-10-01 add pp:opspace to tokenize <binop><space>= to <binop>=
93-08-11 drop ancient BCD constant (`...`) detection -- wake up cfront
fix PP_TRUNCATE macro fsm bug that missed some expansions
fix stringize bug that choked if space preceded #
fix <function-like-macro> <identifier> bug that omitted space
93-07-17 minor transition mode fix for string concatenation
fix standalone macdef line sync buffer bug
pp:noline turns off linesync, pp:line restores it
93-06-22 add pp:prefix to control prefix include compatibility
93-04-01 use probe_verbose in predefined symbol probe
93-03-11 close fd after last file block read -- relaxes open fd limit
remove pp.control nesting limit
add `#rename old new'
__STDC__ not defined for plusplus (until they figure it out)
93-01-22 fix ansi macro args recursion bug
93-01-11 fix '\377'<0 for signed char compilers
add RELAX for __STDPP__directive directives
92-12-25 fix #include guard test that omitted IN_tokens for CPP=1
92-12-11 fix pp:truncate for STANDALONE and COMPILE
fix pp:allmultiple again!
92-11-30 add pp:final, pp:initial
add __STDPP__directive and #(directive) as ??= alternative
relax obsolete macro expand warning for _xxx||xxx
retain quoted \newline when PP_LINEID != ""
fix CATLITERAL hidden newline line sync
92-11-11 fix COMPATIBILITY EOF in macro arg list and # in macro body
fix [?\] on 4K buffer boundary bug that lost next refill()
fix ppproto bug that botched -ih comments
92-10-31 fix standalone -C bug that duplicated output buffer
add pp:stringspan to handle gnu "<newline>" extension
92-10-12 fix T_X_GROUP asm bug
allow `#define a "b' pp:compatibility hack
92-08-11 add PP_PLUSCOMMENT, pp:pluscomment probe
add #(default v,d) #(empty v) #(iterate m,...)
compatibility allows #define f(a,,b) for 2 args!
probe now handles gcc -E -g3 to get gnu predefines
92-07-17 fix pp:multiple again, fix ppproto() out of bounds
PP_STANDARD is always PP_CDIR and PP_HOSTED
92-07-11 add #import and #include_next probes
92-06-11 fix bug where comments dissappeared after disabled macro in standalone
COMPATIBILITY macro recursion bug fix may cause some to be missed
PP_MACREF or -D-L- ignores #line until #line with file arg
92-06-01 add pp:ignore
fix probe of stdpp to handle -I[-+][CH]
92-05-11 add pp:hide <id>, pp:note <id>, noticed(<id>), exists(<...>)
add defined(__STDPP__<pragma>) feature test
add PP_CDIR, pp:cdir for C++ extern "C" { ... } include wrapping
pp.probe now handles predefines with values other than 1
92-04-11 add inverse proto (K&R -> prototype) to ppproto
92-04-01 release
non-libpp generated symbols containing ' ' are not truncated
92-02-11 conversion to new lexer brings time close to reiser (esp. w/gcc -O)
combine standalone (ppcpp) tokenizing (pplex) and proto lex tables
recode ppproto for standalone operation via PROTOMAIN
add PP_NOHASH for PP_COMPILE front ends that rehash T_ID anyway
delete PP_NOQUOTE
delete #option(strict) test in probe in favor of non-hosted warnings
add unsigned to ppexpr()
91-10-11 add pp:truncate <len> for non-flexname compilers
91-09-11 fix ppproto aggression on f(*y); -> f __PROTO__((*y));
91-08-11 switch seterror() to error_info.*
add pp:linefile to force file name in line sync
add pp:spaceout for probed compilers that don't allow pp override
91-06-11 fix ignored -I/usr/include bug
91-04-11 set SYM_INIT in pp.macref for -U on cmd line
91-01-31 replace pp:pragma and pp:directive with pp:map
replace #assert and #unassert with #define #... and #undef #...
#assert and #unassert compatibility retained via pp:map
replace -D#directive with -D%directive (because of #assert change)
add pp:splicecat for \<newline> #define token paste
fix \<newline> bug that added space in COMPATIBILITY quoted strings
90-12-11 fix #pragma pp:multiple
90-11-11 generalize handling of non-standard keywords for COMPILE
replace pp:identifier/PP_IDENTIFIER with pp:reserved/PP_RESERVED
pp*keys* -> ppkey
add PP_NOISE
(gag) handle msdos paths by changing \ to / and retrying on failure
(gag) handle msdos :> operator by pplex() '+' return
add #pragma prototyped and ppproto.c for prototype conversion
add unsigned long arg to PP_MACREF for hashed macro arity+value
90-10-11 0f is not a float constant
change -I-M to -I-I, file just lists include files to be ignored
fix ppprobe for __STDC__==0 hybrids
add pp.flags and PP_[a-z0-9]+ for exported state info
90-10-01 fix standalone ppmacref for directives
add `try' to C++ keywords
fine tune a few COMPILE error messages
privatize pp.h
90-08-11 use opt_again in cmdargs() option parsers
(gag) add pp:macref macro reference pragma to handle CC preprocessors
(gag) add pp:spaceout to handle ansi + asm hacks
90-07-17 remove spaces from macdef line sync (blew sun cc)
90-06-11 add internal ppsymkey to avoid ppsymbol.value pun for SYM_KEYWORD
90-05-01 fix catliteral bug of `"..." << ' -> `"..." <='
90-04-01 fix `ifndef-define-endif' include wrapper test
90-03-27 add setpreroot() to ppop() [ sleazy but well hidden ]
90-03-22 pp.macref called for all undef's
90-03-20 add <prefix>cpp checks to ppprobe
add pp:hostdir before pp:include in ppprobe
fix PP_HOSTDIR op with no dir arg
90-03-15 System V CCS compatibility update
add PP_ASSERT
add -A for PP_ASSERT and -YI,dir for PP_STANDARD
add ppincref.c and -H to use it
-Xa defines __STDC__ to 0 (gak)
90-03-09 duplicate macro formals cause level 2 error
90-03-01 add #(ARGC) for (variadic) macro arg count
90-02-11 fix line sync number bug in pppush()
89-12-01 ignore leading = in pragma map for old pragma compatibility
check for NEWLINE on first macdef line sync
89-11-11 add -1 arg to pp.incref -- include skipped
STRICT 0x7e-macro is T_INVALID per standard
add pp:identifier pragma to selectively undo PP_COMPILE keywords
add tokop() to ppcontrol to support multi-valued pragmas
add #ifndef...#endif include optimization for STRICT
89-10-27 use REF_NORMAL, REF_IF, REF_UNDEF for pp.macref arg2
89-10-17 fix c(x)y compatibility pasting bug
#line 1 "f" now marks "f" included
89-10-11 enable -I. during initialization
89-10-01 inhibit pp:linetype syncs for top level #line directives
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