1" Vim syntax file 2" Language: PROLOG 3" Maintainer: Anton Kochkov <[email protected]> 4" Last Change: 2021 Jan 05 5 6" There are two sets of highlighting in here: 7" If the "prolog_highlighting_clean" variable exists, it is rather sparse. 8" Otherwise you get more highlighting. 9" 10" You can also set the "prolog_highlighting_no_keyword" variable. If set, 11" keywords will not be highlighted. 12 13" quit when a syntax file was already loaded 14if exists("b:current_syntax") 15 finish 16endif 17 18" Prolog is case sensitive. 19syn case match 20 21" Very simple highlighting for comments, clause heads and 22" character codes. It respects prolog strings and atoms. 23 24syn region prologCComment start=+/\*+ end=+\*/+ contains=@Spell 25syn match prologComment +%.*+ contains=@Spell 26 27if !exists("prolog_highlighting_no_keyword") 28 syn keyword prologKeyword module meta_predicate multifile dynamic 29endif 30syn match prologCharCode +0'\\\=.+ 31syn region prologString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=@Spell 32syn region prologAtom start=+'+ skip=+\\\\\|\\'+ end=+'+ 33syn region prologClause matchgroup=prologClauseHead start=+^\s*[a-z]\w*+ matchgroup=Normal end=+\.\s\|\.$+ contains=ALLBUT,prologClause contains=@NoSpell 34 35if !exists("prolog_highlighting_clean") 36 37 " some keywords 38 " some common predicates are also highlighted as keywords 39 " is there a better solution? 40 if !exists("prolog_highlighting_no_keyword") 41 syn keyword prologKeyword abolish current_output peek_code 42 syn keyword prologKeyword append current_predicate put_byte 43 syn keyword prologKeyword arg current_prolog_flag put_char 44 syn keyword prologKeyword asserta fail put_code 45 syn keyword prologKeyword assertz findall read 46 syn keyword prologKeyword at_end_of_stream float read_term 47 syn keyword prologKeyword atom flush_output repeat 48 syn keyword prologKeyword atom_chars functor retract 49 syn keyword prologKeyword atom_codes get_byte set_input 50 syn keyword prologKeyword atom_concat get_char set_output 51 syn keyword prologKeyword atom_length get_code set_prolog_flag 52 syn keyword prologKeyword atomic halt set_stream_position 53 syn keyword prologKeyword bagof integer setof 54 syn keyword prologKeyword call is stream_property 55 syn keyword prologKeyword catch nl sub_atom 56 syn keyword prologKeyword char_code nonvar throw 57 syn keyword prologKeyword char_conversion number true 58 syn keyword prologKeyword clause number_chars unify_with_occurs_check 59 syn keyword prologKeyword close number_codes var 60 syn keyword prologKeyword compound once write 61 syn keyword prologKeyword copy_term op write_canonical 62 syn keyword prologKeyword current_char_conversion open write_term 63 syn keyword prologKeyword current_input peek_byte writeq 64 syn keyword prologKeyword current_op peek_char 65 endif 66 67 syn match prologOperator "=\\=\|=:=\|\\==\|=<\|==\|>=\|\\=\|\\+\|=\.\.\|<\|>\|=" 68 syn match prologAsIs "===\|\\===\|<=\|=>" 69 70 syn match prologNumber "\<\d*\>'\@!" 71 syn match prologNumber "\<0[xX]\x*\>'\@!" 72 syn match prologCommentError "\*/" 73 syn match prologSpecialCharacter ";" 74 syn match prologSpecialCharacter "!" 75 syn match prologSpecialCharacter ":-" 76 syn match prologSpecialCharacter "-->" 77 syn match prologQuestion "?-.*\." contains=prologNumber 78 79 80endif 81 82syn sync maxlines=50 83 84 85" Define the default highlighting. 86" Only when an item doesn't have highlighting yet 87 88" The default highlighting. 89hi def link prologComment Comment 90hi def link prologCComment Comment 91hi def link prologCharCode Special 92 93if exists ("prolog_highlighting_clean") 94 95hi def link prologKeyword Statement 96hi def link prologClauseHead Statement 97hi def link prologClause Normal 98 99else 100 101hi def link prologKeyword Keyword 102hi def link prologClauseHead Constant 103hi def link prologClause Normal 104hi def link prologQuestion PreProc 105hi def link prologSpecialCharacter Special 106hi def link prologNumber Number 107hi def link prologAsIs Normal 108hi def link prologCommentError Error 109hi def link prologAtom String 110hi def link prologString String 111hi def link prologOperator Operator 112 113endif 114 115 116let b:current_syntax = "prolog" 117 118" vim: ts=8 119