LaGriT Syntax file for ViM

lagrit.vim

" Vim syntax file
" Language: LaGriT
" Maintainer: Daniel Livingston
" Latest Revision: 16 November 2017
" To install: copy to ~/.vim/syntax/lagrit.vim
" ---------------------------------------------------- "

" if exists("b:current_syntax")
"   finish
" endif

" Match floating point or integers
syn match LGNumbers '\d\+'
syn match LGNumbers '[-+]\d\+'
syn match LGNumbers '[-+]\d\+\.\d*'

" Capture words with numbers appended, i.e. mo1, to avoid number highlighting
syn match LGNull '[A-Za-z]\+[0-9]\+'
" syn match LGNull '[,/=" "]\+'

" For a command line, first and second entries
syn match argOne '^\zs[^\/]\+\ze' contained
syn match argTwo '\/\zs[^\/]\+\ze\/' contained
syn match argOneTwo '^\zs[^\/]\+\/[^\/]\+\ze\/' contains=argOne,argTwo

" Select keywords that should be highlighted differently
syn keyword argFinish finish
syn keyword argSingle setpts settets connect geniee triangulate quality and
syn keyword argQualifiers rtp xyz all brief seq nod minmax list value node element both le gt ge eq lt imt itetclr

syn keyword argLast minmax quad plane box hex tet tri ascii binary def inclusive 

syn keyword argOneShort rmpoint resetpts
syn keyword argTwoShort compress itp status

" Comments
syn match LGComment "[#*].*$"

" Link matches to highlighting classes
hi def link argQualifiers   Identifier
hi def link argTwo          Statement
hi def link argOne          Type
hi def link argTwoShort     Statement
hi def link argOneShort     Type
hi def link argFinish       PreProc
hi def link argSingle       Type
hi def link LGComment       Comment
hi def link LGNumbers       Constant
hi def link argLast         Statement

let b:current_syntax = "lagrit"

lagrit_2.vim

" IMPORTANT NOTE:
" MUST be renamed 'lagrit.vim'
" Copy into ~/.vim/ftdetect/lagrit.vim

autocmd BufRead,BufNewFile *.lgi      set filetype=lagrit

Copy lagrit.vim to ~/.vim/syntax/lagrit.vim.
Rename lagrit_2.vim to lagrit.vim and copy to ~/.vim/ftdetect/lagrit.vim.

May have to create syntax and ftdetect folders if you don't have any other syntax files installed.