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1 " Vim syntax file
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2 " Language: PROLOG
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3 " Maintainers: Ralph Becket <rwab1@cam.sri.co.uk>,
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4 " Thomas Koehler <jean-luc@picard.franken.de>
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5 " Last Change: 2003 May 11
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6 " URL: http://jeanluc-picard.de/vim/syntax/prolog.vim
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7
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8 " There are two sets of highlighting in here:
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9 " If the "prolog_highlighting_clean" variable exists, it is rather sparse.
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10 " Otherwise you get more highlighting.
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11
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12 " Quit when a syntax file was already loaded
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13 if version < 600
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14 syntax clear
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15 elseif exists("b:current_syntax")
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16 finish
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17 endif
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18
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19 " Prolog is case sensitive.
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20 syn case match
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21
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22 " Very simple highlighting for comments, clause heads and
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23 " character codes. It respects prolog strings and atoms.
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24
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25 syn region prologCComment start=+/\*+ end=+\*/+
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26 syn match prologComment +%.*+
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27
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28 syn keyword prologKeyword module meta_predicate multifile dynamic
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29 syn match prologCharCode +0'\\\=.+
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30 syn region prologString start=+"+ skip=+\\"+ end=+"+
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31 syn region prologAtom start=+'+ skip=+\\'+ end=+'+
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32 syn region prologClauseHead start=+^[a-z][^(]*(+ skip=+\.[^ ]+ end=+:-\|\.$\|\.[ ]\|-->+
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33
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34 if !exists("prolog_highlighting_clean")
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35
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36 " some keywords
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37 " some common predicates are also highlighted as keywords
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38 " is there a better solution?
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39 syn keyword prologKeyword abolish current_output peek_code
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40 syn keyword prologKeyword append current_predicate put_byte
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41 syn keyword prologKeyword arg current_prolog_flag put_char
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42 syn keyword prologKeyword asserta fail put_code
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43 syn keyword prologKeyword assertz findall read
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44 syn keyword prologKeyword at_end_of_stream float read_term
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45 syn keyword prologKeyword atom flush_output repeat
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46 syn keyword prologKeyword atom_chars functor retract
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47 syn keyword prologKeyword atom_codes get_byte set_input
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48 syn keyword prologKeyword atom_concat get_char set_output
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49 syn keyword prologKeyword atom_length get_code set_prolog_flag
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50 syn keyword prologKeyword atomic halt set_stream_position
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51 syn keyword prologKeyword bagof integer setof
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52 syn keyword prologKeyword call is stream_property
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53 syn keyword prologKeyword catch nl sub_atom
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54 syn keyword prologKeyword char_code nonvar throw
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55 syn keyword prologKeyword char_conversion number true
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56 syn keyword prologKeyword clause number_chars unify_with_occurs_check
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57 syn keyword prologKeyword close number_codes var
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58 syn keyword prologKeyword compound once write
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59 syn keyword prologKeyword copy_term op write_canonical
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60 syn keyword prologKeyword current_char_conversion open write_term
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61 syn keyword prologKeyword current_input peek_byte writeq
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62 syn keyword prologKeyword current_op peek_char
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63
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64 syn match prologOperator "=\\=\|=:=\|\\==\|=<\|==\|>=\|\\=\|\\+\|<\|>\|="
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65 syn match prologAsIs "===\|\\===\|<=\|=>"
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66
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67 syn match prologNumber "\<[0123456789]*\>"
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68 syn match prologCommentError "\*/"
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69 syn match prologSpecialCharacter ";"
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70 syn match prologSpecialCharacter "!"
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71 syn match prologQuestion "?-.*\." contains=prologNumber
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72
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73
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74 endif
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75
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76 syn sync ccomment maxlines=50
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77
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78
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79 " Define the default highlighting.
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80 " For version 5.7 and earlier: only when not done already
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81 " For version 5.8 and later: only when an item doesn't have highlighting yet
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82 if version >= 508 || !exists("did_prolog_syn_inits")
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83 if version < 508
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84 let did_prolog_syn_inits = 1
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85 command -nargs=+ HiLink hi link <args>
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86 else
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87 command -nargs=+ HiLink hi def link <args>
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88 endif
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89
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90 " The default highlighting.
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91 HiLink prologComment Comment
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92 HiLink prologCComment Comment
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93 HiLink prologCharCode Special
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94
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95 if exists ("prolog_highlighting_clean")
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96
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97 HiLink prologKeyword Statement
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98 HiLink prologClauseHead Statement
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99
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100 else
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101
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102 HiLink prologKeyword Keyword
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103 HiLink prologClauseHead Constant
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104 HiLink prologQuestion PreProc
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105 HiLink prologSpecialCharacter Special
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106 HiLink prologNumber Number
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107 HiLink prologAsIs Normal
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108 HiLink prologCommentError Error
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109 HiLink prologAtom String
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110 HiLink prologString String
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111 HiLink prologOperator Operator
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112
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113 endif
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114
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115 delcommand HiLink
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116 endif
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117
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118 let b:current_syntax = "prolog"
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119
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120 " vim: ts=8
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