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+" Vim syntax file
+" Modified from  http://plnet.org/files/vim/
+" using keywords from http://www.kednos.com/pli/docs/reference_manual/6291pro_contents.html
+"    2012-11-13 Alan Thompson
+
+if version < 600
+    syntax clear
+elseif exists("b:current_syntax")
+    finish
+endif
+
+syn case ignore
+
+" Todo.
+syn keyword pl1Todo TODO FIXME XXX DEBUG NOTE
+
+" pl1CommentGroup allows adding matches for special things in comments
+" 20010723az: Added this so that these could be matched in comments...  
+syn cluster pl1CommentGroup contains=pl1Todo
+
+syn match   pl1Garbage        "[^ \t()]"
+syn match   pl1Identifier     "[a-z][a-z0-9$_#]*"
+syn match   pl1HostIdentifier ":[a-z][a-z0-9$_#]*"
+
+" 20010723az: When wanted, highlight the trailing whitespace -- this is
+" based on c_space_errors 
+if exists("c_space_errors")
+    if !exists("c_no_trail_space_error")
+        syn match pl1SpaceError "\s\+$"
+    endif
+    if !exists("c_no_tab_space_error")
+        syn match pl1SpaceError " \+\t"me=e-1
+    endif
+endif
+
+" Symbols.  
+syn match   pl1Symbol         "\(;\|,\|\.\)"
+syn match   pl1PreProcSym     "%"
+
+" Operators.
+syn match   pl1Operator       "\(&\|:\|!\|+\|-\|\*\|/\|=\|<\|>\|@\|\*\*\|!=\|\~=\)"
+syn match   pl1Operator       "\(\^\|\^=\|<=\|>=\|:=\|=>\|\.\.\|||\|<<\|>>\|\"\)"
+
+" Attributes
+syn keyword pl1Attribute BACKWARDS BUFFERED BUF CONNECTED CONN CONSTANT EVENT
+syn keyword pl1Attribute EXCLUSIVE EXCL FORMAT GENERIC IRREDUCIBLE IRRED LOCAL
+syn keyword pl1Attribute REDUCIBLE RED TASK TRANSIENT UNBUFFERED UNBUF ALIGNED ANY
+syn keyword pl1Attribute AREA AUTOMATIC AUTO BASED BUILTIN CONDITION COND CONTROLLED
+syn keyword pl1Attribute CTL DEFINED DEF DIRECT ENVIRONMENT ENV EXTERNAL EXT FILE
+syn keyword pl1Attribute GLOBALDEF GLOBALREF INITIAL INIT INPUT INTERNAL INT KEYED
+syn keyword pl1Attribute LABEL LIKE LIST MEMBER NONVARYING NONVAR OPTIONAL OPTIONS
+syn keyword pl1Attribute OUTPUT PARAMETER PARM PICTURE PIC POSITION POS PRECISION
+syn keyword pl1Attribute PREC PRINT READONLY RECORD REFER RETURNS SEQUENTIAL SEQL
+syn keyword pl1Attribute STATIC STREAM STRUCTURE TRUNCATE UNALIGNED UNAL UNION UPDATE
+syn keyword pl1Attribute VARIABLE VARYING VAR COMPLEX CPLX REAL BINARY BIN BIT
+syn keyword pl1Attribute CHARACTER CHAR DECIMAL DEC DESCRIPTOR DESC DIMENSION DIM
+syn keyword pl1Attribute FIXED FLOAT OFFSET POINTER PTR REFERENCE VALUE VAL 
+
+" Functions
+syn keyword pl1Function AFTER ALL ANY BEFORE COMPLETION CPLN CONJG COUNT
+syn keyword pl1Function CURRENTSTORAGE CSTG DATAFIELD DECAT DOT ERF ERFC IMAG
+syn keyword pl1Function ONCOUNT ONFIELD ONLOC POLY PRIORITY REPEAT SAMEKEY STATUS
+syn keyword pl1Function STORAGE STG ABS ACOS ACTUALCOUNT ADD ADDR ADDREL ALLOCATION
+syn keyword pl1Function ALLOCN ASIN ATAN ATAND ATANH BOOL BYTE BYTESIZE CEIL COLLATE
+syn keyword pl1Function COPY COS COSD COSH DATE DATETIME DECODE DISPLAY DIVIDE EMPTY
+syn keyword pl1Function ENCODE ERROR EVERY EXP EXTEND FLOOR FLUSH FREE HBOUND HIGH
+syn keyword pl1Function INDEX INFORM INT LBOUND LENGTH LINE LINENO LOG LOG10 LOG2
+syn keyword pl1Function LOW LTRIM MAX MAXLENGTH MIN MOD MULTIPLY NEXT_VOLUME NULL
+syn keyword pl1Function ONARGSLIST ONCHAR ONCODE ONFILE ONKEY ONSOURCE PAGENO POSINT
+syn keyword pl1Function PRESENT PROD RANK RELEASE RESIGNAL REVERSE REWIND ROUND
+syn keyword pl1Function RTRIM SEARCH SIGN SIN SIND SINH SIZE SOME SPACEBLOCK SQRT
+syn keyword pl1Function STRING SUBSTR SUBTRACT SUM TAN TAND TANH TIME TRANSLATE TRIM
+syn keyword pl1Function TRUNC UNSPEC VALID VARIANT VERIFY WARN 
+
+" Other keywords
+syn keyword pl1Other ATTENTION ATTN C CONVERSION CONV DATA NAME NOCONVERSION
+syn keyword pl1Other NOCONV NOFIXEDOVERFLOW NOFOFL NOOVERFLOW NOSIZE
+syn keyword pl1Other NOSTRINGRANGE NOSTRG NOSTRINGSIZE NOSTRZ NOSUBSCRIPTRANGE
+syn keyword pl1Other NOSUBRG NOZERODIVIDE NOZDIV OVERFLOW OFL PENDING RECORD
+syn keyword pl1Other REENTRANT SIZE STRINGRANGE STRG STRINGSIZE STRZ
+syn keyword pl1Other SUBSCRIPTRANGE SUBRG TRANSMIT A ANYCONDITION APPEND B B1 B2
+syn keyword pl1Other B3 B4 BACKUP_DATE BATCH BLOCK_BOUNDARY_FORMAT BLOCK_IO
+syn keyword pl1Other BLOCK_SIZE BUCKET_SIZE BY CANCEL_CONTROL_O
+syn keyword pl1Other CARRIAGE_RETURN_FORMAT COLUMN COL CONTIGUOUS
+syn keyword pl1Other CONTIGUOUS_BEST_TRY CONVERSION CONV CREATION_DATE
+syn keyword pl1Other CURRENT_POSITION DEFAULT_FILE_NAME DEFERRED_WRITE E EDIT
+syn keyword pl1Other ENDFILE ENDPAGE EXPIRATION_DATE EXTENSION_SIZE F FAST_DELETE
+syn keyword pl1Other FILE_ID FILE_ID_TO FILE_SIZE FINISH FIXEDOVERFLOW FOFL
+syn keyword pl1Other FIXED_CONTROL_FROM FIXED_CONTROL_SIZE FIXED_CONTROL_SIZE_TO
+syn keyword pl1Other FIXED_CONTROL_TO FIXED_LENGTH_RECORDS FROM GROUP_PROTECTION
+syn keyword pl1Other IDENT IGNORE_LINE_MARKS IN INDEXED INDEX_NUMBER INITIAL_FILL
+syn keyword pl1Other INTO KEY KEYFROM KEYTO LINESIZE LOCK_ON_READ LOCK_ON_WRITE
+syn keyword pl1Other MAIN MANUAL_UNLOCKING MATCH_GREATER MATCH_GREATER_EQUAL
+syn keyword pl1Other MATCH_NEXT MATCH_NEXT_EQUAL MAXIMUM_RECORD_NUMBER
+syn keyword pl1Other MAXIMUM_RECORD_SIZE MULTIBLOCK_COUNT MULTIBUFFER_COUNT
+syn keyword pl1Other NOLOCK NONEXISTENT_RECORD NONRECURSIVE NO_ECHO NO_FILTER
+syn keyword pl1Other NO_SHARE OVERFLOW OFL OWNER_GROUP OWNER_ID OWNER_MEMBER
+syn keyword pl1Other OWNER_PROTECTION P PAGE PAGESIZE PRINTER_FORMAT PROMPT
+syn keyword pl1Other PURGE_TYPE_AHEAD R READ_AHEAD READ_CHECK READ_REGARDLESS
+syn keyword pl1Other RECORD_ID RECORD_ID_ACCESS RECORD_ID_TO RECURSIVE REPEAT
+syn keyword pl1Other RETRIEVAL_POINTERS REVISION_DATE REWIND_ON_CLOSE
+syn keyword pl1Other REWIND_ON_OPEN SCALARVARYING SET SHARED_READ SHARED_WRITE
+syn keyword pl1Other SKIP SPOOL STORAGE STRINGRANGE STRG SUBSCRIPTRANGE SUBRG
+syn keyword pl1Other SUPERSEDE SYSIN SYSPRINT SYSTEM_PROTECTION TAB TEMPORARY
+syn keyword pl1Other TIMEOUT_PERIOD TITLE TO UNDEFINEDFILE UNDF UNDERFLOW UFL
+syn keyword pl1Other UNTIL USER_OPEN VAXCONDITION WAIT_FOR_RECORD WHILE
+syn keyword pl1Other WORLD_PROTECTION WRITE_BEHIND WRITE_CHECK X ZERODIVIDE ZDIV 
+
+" PreProcessor keywords
+syn keyword pl1PreProc ACTIVATE DEACTIVATE DECLARE DCL DICTIONARY DO END ERROR
+syn keyword pl1PreProc FATAL GOTO IF INCLUDE INFORM LIST NOLIST PAGE PROCEDURE PROC
+syn keyword pl1PreProc REPLACE RETURN SBTTL TITLE WARN THEN ELSE 
+
+" Statements
+syn keyword pl1Statement CALL SUB ENTRY BY NAME CASE CHECK COPY DEFAULT DFT DELAY
+syn keyword pl1Statement DESCRIPTORS DISPLAY EXIT FETCH HALT IGNORE LIST LOCATE
+syn keyword pl1Statement NOCHECK NOLOCK NONE ORDER RANGE RELEASE REORDER REPLY SNAP
+syn keyword pl1Statement SYSTEM TAB UNLOCK WAIT ALLOCATE ALLOC BEGIN CALL CLOSE
+syn keyword pl1Statement DECLARE DCL DELETE DO ELSE END FORMAT GET GOTO GO TO IF
+syn keyword pl1Statement LEAVE NORESCAN ON OPEN OTHERWISE OTHER PROCEDURE PROC PUT
+syn keyword pl1Statement READ RESCAN RETURN REVERT REWRITE SELECT SIGNAL SNAP
+syn keyword pl1Statement STATEMENT STOP SYSTEM THEN WHEN WRITE 
+
+" PL1's own keywords
+" syn match   pl1Keyword "\<END\>"
+" syn match   pl1Keyword "\.COUNT\>"hs=s+1
+" syn match   pl1Keyword "\.EXISTS\>"hs=s+1
+" syn match   pl1Keyword "\.FIRST\>"hs=s+1
+" syn match   pl1Keyword "\.LAST\>"hs=s+1
+" syn match   pl1Keyword "\.DELETE\>"hs=s+1
+" syn match   pl1Keyword "\.PREV\>"hs=s+1
+" syn match   pl1Keyword "\.NEXT\>"hs=s+1
+
+if exists("pl1_highlight_triggers")
+    syn keyword pl1Trigger  INSERTING UPDATING DELETING
+endif
+
+" Conditionals.
+syn keyword pl1Conditional ELSIF ELSE IF
+syn match   pl1Conditional "\<END\s\+IF\>"
+
+" Loops.
+syn keyword pl1Repeat FOR LOOP WHILE FORALL
+syn match   pl1Repeat "\<END\s\+LOOP\>"
+
+" Various types of comments.
+" 20010723az: Added the ability to treat strings within comments just like
+" C does.
+if exists("c_comment_strings")
+    syntax match pl1CommentSkip contained "^\s*\*\($\|\s\+\)"
+    syntax region pl1CommentString contained start=+L\="+ skip=+\\\\\|\\"+ end=+"+ end=+\*/+me=s-1 contains=pl1CommentSkip
+    syntax region pl1Comment2String contained start=+L\="+ skip=+\\\\\|\\"+ end=+"+ end="$"
+    syntax region pl1CommentL start="--" skip="\\$" end="$" keepend contains=@pl1CommentGroup,pl1Comment2String,pl1CharLiteral,pl1BooleanLiteral,pl1NumbersCom,pl1SpaceError
+    syntax region pl1Comment start="/\*" end="\*/" contains=@pl1CommentGroup,pl1Comment2String,pl1CharLiteral,pl1BooleanLiteral,pl1NumbersCom,pl1SpaceError
+else
+    syntax region pl1CommentL start="--" skip="\\$" end="$" keepend contains=@pl1CommentGroup,pl1SpaceError
+    syntax region pl1Comment start="/\*" end="\*/" contains=@pl1CommentGroup,pl1SpaceError
+endif
+
+" 20010723az: These are the old comment commands ... commented out.
+" syn match   pl1Comment    "--.*$" contains=pl1Todo
+" syn region  pl1Comment    start="/\*" end="\*/" contains=pl1Todo
+syn sync ccomment pl1Comment
+syn sync ccomment pl1CommentL
+
+" To catch unterminated string literals.
+syn match   pl1StringError    "'.*$"
+
+" Various types of literals.
+" 20010723az: Added stuff for comment matching.
+syn match pl1Numbers transparent "\<[+-]\=\d\|[+-]\=\.\d" contains=pl1IntLiteral,pl1FloatLiteral
+syn match pl1NumbersCom contained transparent "\<[+-]\=\d\|[+-]\=\.\d" contains=pl1IntLiteral,pl1FloatLiteral
+syn match pl1IntLiteral contained "[+-]\=\d\+"
+syn match pl1FloatLiteral contained "[+-]\=\d\+\.\d*"
+syn match pl1FloatLiteral contained "[+-]\=\d*\.\d*"
+"syn match pl1FloatLiteral "[+-]\=\([0-9]*\.[0-9]\+\|[0-9]\+\.[0-9]\+\)\(e[+-]\=[0-9]\+\)\="
+syn match   pl1CharLiteral    "'[^']'"
+syn match   pl1StringLiteral  "'\([^']\|''\)*'"
+syn keyword pl1BooleanLiteral TRUE FALSE NULL
+
+" The built-in types.
+syn keyword pl1Storage ANYDATA ANYTYPE BFILE BINARY_INTEGER BLOB BOOLEAN
+syn keyword pl1Storage BYTE CHAR CHARACTER CLOB CURSOR DATE DAY DEC DECIMAL
+syn keyword pl1Storage DOUBLE DSINTERVAL_UNCONSTRAINED FLOAT HOUR
+syn keyword pl1Storage INT INTEGER INTERVAL LOB LONG MINUTE
+syn keyword pl1Storage MLSLABEL MONTH NATURAL NATURALN NCHAR NCHAR_CS NCLOB
+syn keyword pl1Storage NUMBER NUMERIC NVARCHAR PLS_INT PLS_INTEGER
+syn keyword pl1Storage POSITIVE POSITIVEN PRECISION RAW REAL RECORD
+syn keyword pl1Storage SECOND SIGNTYPE SMALLINT STRING SYS_REFCURSOR TABLE TIME
+syn keyword pl1Storage TIMESTAMP TIMESTAMP_UNCONSTRAINED
+syn keyword pl1Storage TIMESTAMP_TZ_UNCONSTRAINED
+syn keyword pl1Storage TIMESTAMP_LTZ_UNCONSTRAINED UROWID VARCHAR
+syn keyword pl1Storage VARCHAR2 YEAR YMINTERVAL_UNCONSTRAINED ZONE
+
+" A type-attribute is really a type.
+" 20020916bp: Removed leading part of pattern to avoid highlighting the
+"             object
+syn match   pl1TypeAttribute  "%\(TYPE\|ROWTYPE\)\>"
+
+" All other attributes.
+syn match   pl1Attribute "%\(BULK_EXCEPTIONS\|BULK_ROWCOUNT\|ISOPEN\|FOUND\|NOTFOUND\|ROWCOUNT\)\>"
+
+" Catch errors caused by wrong parentheses and brackets
+" 20010723az: significantly more powerful than the values -- commented out
+" below the replaced values. This adds the C functionality to PL/SQL.
+syn cluster pl1ParenGroup contains=pl1ParenError,@pl1CommentGroup,pl1CommentSkip,pl1IntLiteral,pl1FloatLiteral,pl1NumbersCom
+if exists("c_no_bracket_error")
+    syn region pl1Paren transparent start='(' end=')' contains=ALLBUT,@pl1ParenGroup
+    syn match pl1ParenError ")"
+    syn match pl1ErrInParen contained "[{}]"
+else
+    syn region pl1Paren transparent start='(' end=')' contains=ALLBUT,@pl1ParenGroup,pl1ErrInBracket
+    syn match pl1ParenError "[\])]"
+    syn match pl1ErrInParen contained "[{}]"
+    syn region pl1Bracket transparent start='\[' end=']' contains=ALLBUT,@pl1ParenGroup,pl1ErrInParen
+    syn match pl1ErrInBracket contained "[);{}]"
+endif
+" syn region pl1Paren       transparent start='(' end=')' contains=ALLBUT,pl1ParenError
+" syn match pl1ParenError   ")"
+
+" Syntax Synchronizing
+syn sync minlines=10 maxlines=100
+
+" Define the default highlighting.
+" For version 5.x and earlier, only when not done already.
+" For version 5.8 and later, only when and item doesn't have highlighting
+" yet.
+if version >= 508 || !exists("did_pl1_syn_inits")
+    if version < 508
+        let did_pl1_syn_inits = 1
+        command -nargs=+ HiLink hi link <args>
+    else
+        command -nargs=+ HiLink hi def link <args>
+    endif
+
+    HiLink pl1Attribute       Macro
+    HiLink pl1BlockError      Error
+    HiLink pl1BooleanLiteral  Boolean
+    HiLink pl1CharLiteral     Character
+    HiLink pl1Comment         Comment
+    HiLink pl1CommentL        Comment
+    HiLink pl1Conditional     Conditional
+    HiLink pl1Error           Error
+    HiLink pl1ErrInBracket    Error
+    HiLink pl1ErrInBlock      Error
+    HiLink pl1ErrInParen      Error
+    HiLink pl1Exception       Function
+    HiLink pl1FloatLiteral    Float
+    HiLink pl1Function        Function
+    HiLink pl1Garbage         Error
+    HiLink pl1HostIdentifier  Label
+    HiLink pl1Identifier      Normal
+    HiLink pl1IntLiteral      Number
+    HiLink pl1Operator        Operator
+    HiLink pl1Paren           Normal
+    HiLink pl1ParenError      Error
+    HiLink pl1SpaceError      Error
+    HiLink pl1Pseudo          PreProc
+    HiLink pl1PreProc         PreProc
+    HiLink pl1PreProcSym      PreProc
+    HiLink pl1Keyword         Keyword
+    HiLink pl1Other           Keyword
+    HiLink pl1Repeat          Repeat
+    HiLink pl1Statement       Keyword
+    HiLink pl1Storage         StorageClass
+    HiLink pl1StringError     Error
+    HiLink pl1StringLiteral   String
+    HiLink pl1CommentString   String
+    HiLink pl1Comment2String  String
+    HiLink pl1Symbol          Normal
+    HiLink pl1Trigger         Function
+    HiLink pl1TypeAttribute   StorageClass
+    HiLink pl1Todo            Todo
+
+    delcommand HiLink
+endif
+
+let b:current_syntax = "pl1"