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1 " Vim syntax file
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2 " Language: configure.in script: M4 with sh
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3 " Maintainer: Christian Hammesr <ch@lathspell.westend.com>
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4 " Last Change: 2015 Jan 14
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5 " (patch from Yngve Inntjore Levinsen to detect AC_MSG)
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6 " (patch from Khym Chanur to add @Spell)
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7
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7
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8 " Well, I actually even do not know much about m4. This explains why there
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9 " is probably very much missing here, yet !
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10 " But I missed good highlighting when editing my GNU autoconf/automake
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11 " script, so I wrote this quick and dirty patch.
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12
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13
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14 " For version 5.x: Clear all syntax items
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15 " For version 6.x: Quit when a syntax file was already loaded
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16 if version < 600
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17 syntax clear
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18 elseif exists("b:current_syntax")
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19 finish
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20 endif
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21
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22 " define the config syntax
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23 syn match configdelimiter "[()\[\];,]"
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24 syn match configoperator "[=|&\*\+\<\>]"
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25 syn match configcomment "\(dnl.*\)\|\(#.*\)" contains=configDnl,@Spell
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26 syn match configfunction "\<[A-Z_][A-Z0-9_]*\>"
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27 syn match confignumber "[-+]\=\<\d\+\(\.\d*\)\=\>"
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28 syn keyword configDnl dnl contained
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29 syn keyword configkeyword if then else fi test for in do done
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30 syn keyword configspecial cat rm eval
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31
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32 " This shortens the script, see syn-ext-match..
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33 syn region configstring start=+\z(["'`]\)+ skip=+\\\z1+ end=+\z1+ contains=@Spell
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34
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35 " Anything inside AC_MSG_TYPE([...]) and AC_MSG_TYPE(...) is a string.
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36 syn region configstring matchgroup=configfunction start="AC_MSG_[A-Z]*\ze(\[" matchgroup=configdelimiter end="\])" contains=configdelimiter,@Spell
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37 syn region configstring matchgroup=configfunction start="AC_MSG_[A-Z]*\ze([^[]" matchgroup=configdelimiter end=")" contains=configdelimiter,@Spell
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38
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39 " Define the default highlighting.
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40 " For version 5.7 and earlier: only when not done already
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41 " For version 5.8 and later: only when an item doesn't have highlighting yet
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42 if version >= 508 || !exists("did_config_syntax_inits")
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43 if version < 508
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44 let did_config_syntax_inits = 1
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45 command -nargs=+ HiLink hi link <args>
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46 else
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47 command -nargs=+ HiLink hi def link <args>
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48 endif
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49
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50 HiLink configdelimiter Delimiter
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51 HiLink configoperator Operator
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52 HiLink configcomment Comment
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53 HiLink configDnl Comment
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54 HiLink configfunction Function
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55 HiLink confignumber Number
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56 HiLink configkeyword Keyword
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57 HiLink configspecial Special
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58 HiLink configstring String
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59
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60 delcommand HiLink
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61 endif
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62
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63 let b:current_syntax = "config"
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64
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65 " vim: ts=4
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