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+" Vim syntax file
+" Language: FORM
+" Maintainer: Michael M. Tung <michael.tung@uni-mainz.de>
+" Last Change: 2001 May 10
+
+" First public release based on 'Symbolic Manipulation with FORM'
+" by J.A.M. Vermaseren, CAN, Netherlands, 1991.
+" This syntax file is still in development. Please send suggestions
+" to the maintainer.
+
+" For version 5.x: Clear all syntax items
+" For version 6.x: Quit when a syntax file was already loaded
+if version < 600
+ syntax clear
+elseif exists("b:current_syntax")
+ finish
+endif
+
+syn case ignore
+
+" A bunch of useful FORM keywords
+syn keyword formType global local
+syn keyword formHeaderStatement symbol symbols cfunction cfunctions
+syn keyword formHeaderStatement function functions vector vectors
+syn keyword formHeaderStatement set sets index indices
+syn keyword formHeaderStatement dimension dimensions unittrace
+syn keyword formStatement id identify drop skip
+syn keyword formStatement write nwrite
+syn keyword formStatement format print nprint load save
+syn keyword formStatement bracket brackets
+syn keyword formStatement multiply count match only discard
+syn keyword formStatement trace4 traceN contract symmetrize antisymmetrize
+syn keyword formConditional if else endif while
+syn keyword formConditional repeat endrepeat label goto
+
+" some special functions
+syn keyword formStatement g_ gi_ g5_ g6_ g7_ 5_ 6_ 7_
+syn keyword formStatement e_ d_ delta_ theta_ sum_ sump_
+
+" pattern matching for keywords
+syn match formComment "^\ *\*.*$"
+syn match formComment "\;\ *\*.*$"
+syn region formString start=+"+ end=+"+
+syn region formString start=+'+ end=+'+
+syn match formPreProc "^\=\#[a-zA-z][a-zA-Z0-9]*\>"
+syn match formNumber "\<\d\+\>"
+syn match formNumber "\<\d\+\.\d*\>"
+syn match formNumber "\.\d\+\>"
+syn match formNumber "-\d" contains=Number
+syn match formNumber "-\.\d" contains=Number
+syn match formNumber "i_\+\>"
+syn match formNumber "fac_\+\>"
+syn match formDirective "^\=\.[a-zA-z][a-zA-Z0-9]*\>"
+
+" hi User Labels
+syn sync ccomment formComment minlines=10
+
+" Define the default highlighting.
+" For version 5.7 and earlier: only when not done already
+" For version 5.8 and later: only when an item doesn't have highlighting yet
+if version >= 508 || !exists("did_form_syn_inits")
+ if version < 508
+ let did_form_syn_inits = 1
+ command -nargs=+ HiLink hi link <args>
+ else
+ command -nargs=+ HiLink hi def link <args>
+ endif
+
+ HiLink formConditional Conditional
+ HiLink formNumber Number
+ HiLink formStatement Statement
+ HiLink formComment Comment
+ HiLink formPreProc PreProc
+ HiLink formDirective PreProc
+ HiLink formType Type
+ HiLink formString String
+
+ if !exists("form_enhanced_color")
+ HiLink formHeaderStatement Statement
+ else
+ " enhanced color mode
+ HiLink formHeaderStatement HeaderStatement
+ " dark and a light background for local types
+ if &background == "dark"
+ hi HeaderStatement term=underline ctermfg=LightGreen guifg=LightGreen gui=bold
+ else
+ hi HeaderStatement term=underline ctermfg=DarkGreen guifg=SeaGreen gui=bold
+ endif
+ " change slightly the default for dark gvim
+ if has("gui_running") && &background == "dark"
+ hi Conditional guifg=LightBlue gui=bold
+ hi Statement guifg=LightYellow
+ endif
+ endif
+
+ delcommand HiLink
+endif
+
+ let b:current_syntax = "form"
+
+" vim: ts=8