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|
" Vim syntax file
" Language: Algol 68
" Version: 0.4
" Maintainer: Janis Papanagnou
" Previous Maintainer: NevilleD.ALGOL_68@sgr-a.net
" Last Change: 2026 Sep 14
if exists("b:current_syntax")
finish
endif
" Algol 68 Final Report, unrevised
syn keyword algol68PreProc PRIORITY
syn keyword algol68Operator BTB CTB CONJ QUOTE CT CTAB EITHER SIGN
" Algol 68 Revised Report
syn keyword algol68Boolean TRUE FALSE
syn keyword algol68Conditional IF THEN ELSE ELIF FI
syn keyword algol68Conditional CASE IN OUT OUSE ESAC
syn keyword algol68Constant NIL SKIP EMPTY
syn keyword algol68Statement MODE PROC
syn keyword algol68Statement OP PRIO skipwhite nextgroup=algol68DefiningOperator
" Genie
syn keyword algol68Statement ASSERT
syn keyword algol68Label GOTO
syn match algol68Label "\<GO TO\>"
syn keyword algol68Operator ABS REPR ROUND ENTIER ARG BIN LENG SHORTEN ODD
syn keyword algol68Operator SHL SHR ROL ROR UP DOWN LEVEL LWB UPB I RE IM
syn keyword algol68Operator OVER MOD ELEM SET CLEAR
syn keyword algol68Operator LT LE GE GT
syn keyword algol68Operator EQ NE
syn keyword algol68Operator AND OR XOR NOT
" Genie short-circuit pseudo operators
syn keyword algol68Operator THEF ANDF ANDTH ELSF ORF OREL
syn keyword algol68Operator ANDTHEN ORELSE
syn keyword algol68Operator MINUSAB PLUSAB TIMESAB DIVAB OVERAB MODAB PLUSTO
syn keyword algol68Operator IS ISNT OF AT
syn keyword algol68Operator SORT ELEMS
syn keyword algol68Repeat FOR FROM BY UPTO DOWNTO TO WHILE DO UNTIL OD
syn keyword algol68Statement PAR BEGIN END EXIT
syn match algol68Type "\<\%(LONG\|SHORT\)\>"
syn keyword algol68Type FLEX HEAP LOC REF
" Genie
syn keyword algol68Type NEW
syn keyword algol68Type VOID BOOL INT REAL COMPL CHAR STRING COMPLEX
syn keyword algol68Type BITS BYTES FILE CHANNEL PIPE SEMA SOUND
syn keyword algol68Type FORMAT STRUCT UNION
" Genie extensions in addition to ROUND and ENTIER
syn keyword algol68Operator FLOOR CEIL NINT TRUNC FRAC FIX
" 20011222az: Added new items.
syn keyword algol68Todo contained TODO FIXME XXX DEBUG NOTE
" String
syn region algol68String matchgroup=algol68String start=+"+ end=+"+ contains=algol68StringEscape
syn match algol68StringEscape contained '""'
syn match algol68StringEscape contained "\\$"
syn match algol68Identifier "\<[a-z][a-z0-9_]*\>"
" NOTE: monads = `[!%&+\-?^~]`, nomads = `[*/<=>]`, becomes = `:=`, assigns to = `=:`
" monadic operator => "[!%&+\-?^~][*/<=>]\?\%(:=\|=:\)\?"
" dyadic operator => "\%([!%&+\-?^~]\|[*/<=>]\)[*/<=>]\?\%(:=\|=:\)\?"
" 'becomes' and 'is defined as' symbols
" syn match algol68SymbolOperator ":=\|="
syn match algol68SymbolOperator "\%([!%&+\-?^~]\|[*/<=>]\)\@1<!:="
syn match algol68SymbolOperator "\%([!%&+\-?^~]\|[*/<=>]\|:\)\@1<!=\%([*/<=>]\|:=\|=:\)\@!"
" NOT, AND
" syn match algol68SymbolOperator "[~&]"
syn match algol68SymbolOperator "[~&]\%([*/<=>]\|:=\|=:\)\@!"
" NOT (Genie extension)
" syn match algol68SymbolOperator "\^"
syn match algol68SymbolOperator "\^\%([*/<=>]\|:=\|=:\)\@!"
" NE, EQ
" syn match algol68SymbolOperator "/=\|="
syn match algol68SymbolOperator "/=\%(:=\|=:\|:\)\@!"
syn match algol68SymbolOperator "\%([!%&+\-?^~]\|[*/<=>]\|:\)\@1<!=\%([*/<=>]\|:=\|=:\)\@!"
" NE (Genie extension)
" syn match algol68SymbolOperator "[~^]="
syn match algol68SymbolOperator "[~^]=\%([*/<=>]\|:=\|=:\)\@!"
" LT, GT, LE, GE
" syn match algol68SymbolOperator "[<>]=\?"
syn match algol68SymbolOperator "\%([!%&+\-?^~]\|[*/<=>]\)\@1<![<>]\%([*/<=>]\|:=\|=:\)\@!"
syn match algol68SymbolOperator "\%([!%&+\-?^~]\|[*/<=>]\)\@1<![<>]=\%([*/<=>]\|:=\|=:\|:\)\@!"
" -, +, *, OVER, /, MOD, UP
" syn match algol68SymbolOperator "[-+*%/]\|%\*\|\*\*"
syn match algol68SymbolOperator "[-+%]\%([*/<=>]\|:=\|=:\)\@!"
syn match algol68SymbolOperator "\%([!%&+\-?^~]\|[*/<=>]\)\@1<![*/]\%([*/<=>]\|:=\|=:\)\@!"
syn match algol68SymbolOperator "\%(%\*\|\*\*\)\%(:=\|=:\)\@!"
" syn match algol68SymbolOperator "%\*\|\*\*"
syn match algol68SymbolOperator "\%(%\*\|\*\*\)\%(:=\|=:\)\@!"
" {MINUS,PLUS,TIMES,OVER,DIV,MOD}AB
" syn match algol68SymbolOperator "\%([-+*%/]\|%\*\):="
syn match algol68SymbolOperator "\%([-+%]\|%\*\):="
syn match algol68SymbolOperator "\%([!%&+\-?^~]\|[*/<=>]\)\@1<!\%([*/]\|%\*\):="
" PLUSTO
syn match algol68SymbolOperator "+=:=\@!"
" I
" syn match algol68SymbolOperator "+\*"
syn match algol68SymbolOperator "+\*\%([*/<=>]\|:=\|=:\)\@!"
" IS, ISNT
syn match algol68SymbolOperator ":/\?=:"
syn match algol68DefiningOperator "\u[A-Z0-9]" contained
syn match algol68DefiningOperator "[!%&+\-?^~][*/<=>]\?\%(:=\|=:\)\?" contained
syn match algol68DefiningOperator "\%([!%&+\-?^~]\|[*/<=>]\)[*/<=>]\?\%(:=\|=:\)\?" contained
syn match algol68Number "\<\%(\%(LONG\s\+\)\+\|\%(SHORT\s\+\)\+\)\=\d\+\%(\s\+\d\+\)*\>"
syn match algol68Float "\%(\%(LONG\s\+\)*\|\%(SHORT\s\+\)*\)\=\.\d\+\%(\s\+\d\+\)*\%(\s*[eE\\⏨]\s*[-+]\?\s*\d\+\%(\s\+\d\+\)*\)\?\>"
syn match algol68Float "\<\%(\%(LONG\s\+\)*\|\%(SHORT\s\+\)*\)\=\d\+\%(\s\+\d\+\)*\%(\s*[eE\\⏨]\s*[-+]\?\s*\d\+\%(\s\+\d\+\)*\)\>"
syn match algol68Float "\<\%(\%(LONG\s\+\)*\|\%(SHORT\s\+\)*\)\=\d\+\%(\s\+\d\+\)*\s*\.\s*\d\+\%(\s\+\d\+\)*\%(\s*[eE\\⏨]\s*[-+]\?\s*\d\+\%(\s\+\d\+\)*\)\?\>"
syn match algol68HexNumber "\<\%(\%(LONG\s\+\)*\|\%(SHORT\s\+\)*\)\=2[rR]\s*[01]\+\%(\s\+[01]\+\)*\>"
syn match algol68HexNumber "\<\%(\%(LONG\s\+\)*\|\%(SHORT\s\+\)*\)\=4[rR]\s*[0-3]\+\%(\s\+[0-3]\+\)*\>"
syn match algol68HexNumber "\<\%(\%(LONG\s\+\)*\|\%(SHORT\s\+\)*\)\=8[rR]\s*[0-7]\+\%(\s\+[0-7]\+\)*\>"
syn match algol68HexNumber "\<\%(\%(LONG\s\+\)*\|\%(SHORT\s\+\)*\)\=16[rR]\s*[0-9a-f]\+\%(\s\+[0-9a-f]\+\)*\>"
syn region algol68Special start="\$" end="\$" contains=algol68String
syn region algol68Comment start="¢" end="¢" contains=algol68Todo,algol68SpaceError
syn region algol68Comment start="£" end="£" contains=algol68Todo,algol68SpaceError
syn region algol68Comment start="#" end="#" contains=algol68Todo,algol68SpaceError
syn region algol68Comment start="\<CO\>" end="\<CO\>" contains=algol68Todo,algol68SpaceError
syn region algol68Comment start="\<COMMENT\>" end="\<COMMENT\>" contains=algol68Todo,algol68SpaceError
syn region algol68PreProc start="\<PR\>" end="\<PR\>" contains=algol68Todo,algol68SpaceError
syn region algol68PreProc start="\<PRAGMAT\>" end="\<PRAGMAT\>" contains=algol68Todo,algol68SpaceError
" Algol 68 RS
syn region algol68Comment start="{" end="}" contains=algol68Todo,algol68SpaceError
syn region algol68Comment start="{{{" end="}}}" contains=algol68Todo,algol68SpaceError
syn keyword algol68PreProc DECS CONTEXT configinfo A68CONFIG KEEP FINISH USE SYSPROCS IOSTATE FORALL
syn keyword algol68Type VECTOR
" Algol 68C
syn keyword algol68PreProc USING ENVIRON FOREACH
if !exists("algol68_no_preludes")
" THE STANDARD ENVIRONMENT
" Enquiries
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(blank\|formfeed\|newline\|null\|tab\|eof\)\s*char\%(acter\)\?\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(max\s*abs\|exp\|error\)\s*char\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(long\s*\)\?long\s*\)\?max\s*\%(bits\|int\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(long\s*\)\?long\s*\)\?\%(max\|min\|small\)\s*real\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(\%(long\s*\)\?long\s*\)\?\%(bits\|bytes\|exp\|int\|real\)\s*width\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(bits\|bytes\|compl\|int\|real\)\s*\%(lengths\|shorths\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(blank\|flip\|flop\)\>\%(\s*[a-z0-9]\)\@!"
" Transput Files and Channels
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<stand\s*\%(in\|out\|back\|error\)\%(\s*channel\)\?\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<stand\s*draw\s*channel\>\%(\s*[a-z0-9]\)\@!"
" Transput Event Routines
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<on\s*\%(\%(line\|page\|\%(logical\s*\|physical\s*\)\?file\|format\)\s*\)end\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<on\s*\%(\%(format\|value\|open\|transput\)\s*\)error\>\%(\s*[a-z0-9]\)\@!"
" Connections to Files
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(open\|establish\|append\|create\|associate\|close\|lock\|erase\|scratch\)\>\%(\s*[a-z0-9]\)\@!"
" Positioning on Files
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<new\s*line\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<new\s*page\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<back\s*space\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(reset\|rewind\|rewrite\|set\|seek\|space\)\>\%(\s*[a-z0-9]\)\@!"
" I/O on Files (Standard)
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(get\|put\|print\|read\|write\)\%(f\|\s*bin\)\?\>\%(\s*[a-z0-9]\)\@!"
" I/O on Files (Algol 68C)
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(print\|read\)\s*\%(\%(long\s*\)\?long\s*\)\?\%(int\|real\|complex\|bits\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(print\|read\)\s*\%(bool\|char\|string\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<read\s*line\>\%(\s*[a-z0-9]\)\@!"
" Enquiries on Files
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(get\|put\|bin\|set\|reset\|rewind\|reidf\|draw\)\s*possible\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<end\s*of\s*\%(file\|line\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(make\s*\)\?term\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(compressible\|eof\|eoln\)\>\%(\s*[a-z0-9]\)\@!"
" Keyboard Control
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(cooked\|raw\)\>\%(\s*[a-z0-9]\)\@!"
" Math Constants
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(long\s*\)\?long\s*\)\?\%(min\s*real\|\%(minus\s*\)\?infinity\|\%(min\s*\)\?inf\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(\%(long\s*\)\?long\s*\)\|[qd]\)\?pi\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<mp\s*radix\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Predefined "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<nan\>\%(\s*[a-z0-9]\)\@!"
" Math Basic Functions
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\%([a-z0-9]\s\+\)\@8<!\<\%(\%(\%(long\s*\)\?long\s*\)\|[qd]\)\?\%(sqrt\|cbrt\|curt\|exp\|ln\|log\)\>\%(\s*[a-z0-9]\)\@!\%(\s\{1,7}[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<ln\s*abs\>\%(\s*[a-z0-9]\)\@!"
" Math Trigonometric Functions
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(\%(long\s*\)\?long\s*\)\|[qd]\)\?\%(arc\s*\|a\)\?\%(sin\|cos\|tan\|cot\|sec\|csc\|cas\)\%(h\|\%(\s*dg\)\)\?\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(\%(long\s*\)\?long\s*\)\|[qd]\)\?\%(arc\s*\|a\)\?tan2\%(\s*dg\)\?\>\%(\s*[a-z0-9]\)\@!"
" long-long-sinpi/cospi/tanpi/cotpi
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(\%(long\s*\)\?long\s*\)\|[qd]\)\?\%(sin\|cos\|tan\|cot\)\s*pi\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<ln\s*\%(sinh\|cosh\)\>\%(\s*[a-z0-9]\)\@!"
" a special case in Genie?
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<atan\s*int\>\%(\s*[a-z0-9]\)\@!"
" Random Number Generator
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(long\s*\)\?long\s*\)\?\%(next\s*\)\?random\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<first\s*random\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<rnd\>\%(\s*[a-z0-9]\)\@!"
" Garbage Collection and Memory
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<collect\s*seconds\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<garbage\%(\s*\%(collections\|freed\|refused\|seconds\)\)\?\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<gc\s*heap\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<on\s*gc\s*event\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<preemptive\s*\%(gc\|sweep\%(\s*heap\)\?\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<sweep\s*heap\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<sweeps\%(\s*refused\)\?\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(system\s*\)\?\%(heap\|stack\)\s*pointer\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(actual\|system\)\s*stack\s*size\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(blocks\|collections\)\>\%(\s*[a-z0-9]\)\@!"
" I/O on Strings
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(puts\|gets\|string\)f\?\>\%(\s*[a-z0-9]\)\@!"
" Character Type Tests
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<is\s*\%(alnum\|alpha\|cntrl\|digit\|graph\|lower\|print\|punct\|space\|upper\|xdigit\)\>\%(\s*[a-z0-9]\)\@!"
" Operations on Characters
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<to\s*\%(upper\|lower\)\>\%(\s*[a-z0-9]\)\@!"
" Search in Strings
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(char\|last\s*char\|string\)\s*in\s*string\>\%(\s*[a-z0-9]\)\@!"
" Time and Date
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(cpu\|wall\|utc\|local\)\s*time\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(wall\s*\)\?clock\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(wall\s*\)\?seconds\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<sleep\>\%(\s*[a-z0-9]\)\@!"
" Type Operations
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(long\s*\)\?\%(bits\|bytes\)\s*pack\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(long\s*long\s*\)\?bits\s*pack\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\%([a-z0-9]\s\+\)\@8<!\<\%(bits\|whole\|fixed\|float\|real\)\>\%(\s*[a-z0-9]\)\@!\%(\s*[a-z0-9]\)\@!"
" Runtime
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(program\s*\)\?idf\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(backtrace\|break\|debug\|monitor\|abend\|evaluate\|system\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(i32\|i64\|r64\|r128\)mach\>\%(\s*[a-z0-9]\)\@!"
" UNIX EXTENSIONS
" Environment Functions
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(a68g\s*\)\?\%(argc\|argv\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<get\s*env\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<reset\s*errno\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<str\s*error\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(get\|set\)\s*pwd\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(rows\|columns\|abend\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<errno\>\%(\s*[a-z0-9]\)\@!"
" Processes
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<execve\%(\s*child\%(\s*pipe\)\?\|\s*output\)\?\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<exec\%(\s*sub\%(\s*pipeline\|\s*output\)\?\)\?\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<fork\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<wait\s*pid\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<create\s*pipe\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<peek\s*char\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<sig\s*segv\>\%(\s*[a-z0-9]\)\@!"
" File types and attributes
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<file\s*is\s*\%(block\s*device\|char\s*device\|directory\|regular\|fifo\|link\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<file\s*mode\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<get\s*directory\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<real\s*path\>\%(\s*[a-z0-9]\)\@!"
" Fetching web page contents and sending requests
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<https\?\s*\%(content\|timeout\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<tcp\s*request\>\%(\s*[a-z0-9]\)\@!"
" Regular expressions in string manipulation
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<grep\s*in\s*\%(sub\)\?string\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<sub\s*in\s*string\>\%(\s*[a-z0-9]\)\@!"
" Curses support
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<curses\s*\%(start\|end\|clear\|refresh\|get\s*char\|put\s*char\|move\|lines\|columns\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<curses\s*\%(green\|cyan\|red\|yellow\|magenta\|blue\|white\)\%(\s*inverse\)\?\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<curses\s*del\s*char\>\%(\s*[a-z0-9]\)\@!"
" POSTGRESQL CLIENT ROUTINES
" Connecting to a server
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<pq\s*\%(connect\s*db\|finish\|reset\|parameter\s*status\)\>\%(\s*[a-z0-9]\)\@!"
" Sending queries and retrieving results
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<pq\s*\%(exec\|ntuples\|nfields\|fname\|fnumber\|fformat\|get\s*is\s*null\|get\s*value\|cmd\s*status\|cmd\s*tuples\)\>\%(\s*[a-z0-9]\)\@!"
" Connection status information
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<pq\s*\%(\%(result\s*\)\?error\s*message\|db\|user\|pass\|host\|port\|tty\|options\|\%(protocol\|server\)\s*version\|socket\|backend\s*pid\)\>\%(\s*[a-z0-9]\)\@!"
" SOUND
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(new\|get\|set\)\s*sound\>\%(\s*[a-z0-9]\)\@!"
syn keyword algol68Operator RESOLUTION CHANNELS RATE SAMPLES
" DRAWING USING THE GNU PLOTTING UTILITIES
" Setting up a graphics device
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<draw\s*\%(device\|erase\|show\|move\|aspect\|fill\s*style\|line\s*style\|line\s*width\|clear\|flush\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<make\s*device\>\%(\s*[a-z0-9]\)\@!"
" Specifying colours
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<draw\s*\%(\%(background\s*\)\?colou\?r\%(\s*name\)\?\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<draw\s*get\s*colou\?r\s*name\>\%(\s*[a-z0-9]\)\@!"
" Drawing objects
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<draw\s*\%(point\|line\|rect\|circle\|ball\|star\)\>\%(\s*[a-z0-9]\)\@!"
" Drawing text
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<draw\s*\%(text\%(\s*angle\)\?\|font\s*\%(name\|size\)\)\>\%(\s*[a-z0-9]\)\@!"
" EXTRA NUMERICAL PROCEDURES
" COMPLEX Functions
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(\%(long\s*\)\?long\s*\)\|[qd]\)\?c\%(omplex\s*\)\?\%(sqrt\|exp\|ln\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(long\s*\)\?long\s*\)\?complex\s*\%(arc\s*\)\?\%(sin\|cos\|tan\)h\?\>\%(\s*[a-z0-9]\)\@!"
" cas casin casinh dcas dcasin dcasinh qcas qcasin qcasinh longcas longlongcas
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(\%(long\s*\)\?long\s*\)\|[dq]\?\)ca\?\%(sin\|cos\|tan\)h\?\>\%(\s*[a-z0-9]\)\@!"
" a special case in Genie?
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<long\s*complex\s*atanh\>\%(\s*[a-z0-9]\)\@!"
" REAL Airy Functions
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<airy\s*[ab]i\%(\s*deriv\)\?\%(\s*scaled\)\?\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<airy\s*[ab]i\%(\s*derivative\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<airy\s*zero\s*[ab]i\%(\s*deriv\)\?\>\%(\s*[a-z0-9]\)\@!"
" REAL Bessel Functions
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<bessel\s*\%(jn\|yn\|in\|exp\s*in\|kn\|exp\s*kn\|jl\|yl\|exp\s*il\|exp\s*kl\|jnu\|ynu\|inu\|exp\s*inu\|knu\|exp\s*knu\)\>\%(\s*[a-z0-9]\)\@!"
" only a few could be sensibly merged; we keep them apart
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<bessel\s*\%(il[012]\?\s*scaled\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<bessel\s*\%(in[01]\%(\s*scaled\)\?\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<bessel\s*\%(in\s*u\?\s*scaled\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<bessel\s*\%(j\%(\l[012]\|n[01]\)\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<bessel\s*\%(kl[012]\?\s*scaled\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<bessel\s*\%(kn[01]\%(\s*scaled\)\?\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<bessel\s*\%(kn\s*[u_]\?\s*scaled\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<bessel\s*ln\s*knu\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<bessel\s*\%(y\%(\l[012]\|n[01]\)\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<bessel\s*zero\s*j\%([01]\|nu\)\>\%(\s*[a-z0-9]\)\@!"
" REAL Elliptic Integrals
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<elliptic\s*integral\s*\%(k\|e\|rf\<rd\|rj\|rc\)\>\%(\s*[a-z0-9]\)\@!"
" REAL Error and Gamma Functions
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(ln\s*\)\?\%(fact\|choose\)\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<prime\s*factors\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(\%(long\s*\)\?long\s*\)\|[qd]\)\?\%(inv\%(erse\)\?\s*\)\?erfc\?\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<mpfr\s*\%(\%(\%(long\s*\)\?long\s*\)\|q\)\?\%(inv\s*\)\?erfc\?\>\%(\s*[a-z0-9]\)\@!"
syn match algol68Function "\%(\%([a-z_]\|\l\d\+\)\s\+\)\@8<!\<\%(\%(\%(\%(mpfr\s*\)\?long\s*\)\?long\s*\)\|\%(d\|\%(mpfr\s*\)\?q\)\)\?\%(beta\|gamma\)\%
|
