/usr/share/vim/vim74/syntax/lhaskell.vim is in vim-runtime 2:7.4.052-1ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | " Vim syntax file
" Language: Haskell with literate comments, Bird style,
" TeX style and plain text surrounding
" \begin{code} \end{code} blocks
" Maintainer: Haskell Cafe mailinglist <haskell-cafe@haskell.org>
" Original Author: Arthur van Leeuwen <arthurvl@cs.uu.nl>
" Last Change: 2010 Apr 11
" Version: 1.04
"
" Thanks to Ian Lynagh for thoughtful comments on initial versions and
" for the inspiration for writing this in the first place.
"
" This style guesses as to the type of markup used in a literate haskell
" file and will highlight (La)TeX markup if it finds any
" This behaviour can be overridden, both glabally and locally using
" the lhs_markup variable or b:lhs_markup variable respectively.
"
" lhs_markup must be set to either tex or none to indicate that
" you always want (La)TeX highlighting or no highlighting
" must not be set to let the highlighting be guessed
" b:lhs_markup must be set to eiterh tex or none to indicate that
" you want (La)TeX highlighting or no highlighting for
" this particular buffer
" must not be set to let the highlighting be guessed
"
"
" 2004 February 18: New version, based on Ian Lynagh's TeX guessing
" lhaskell.vim, cweb.vim, tex.vim, sh.vim and fortran.vim
" 2004 February 20: Cleaned up the guessing and overriding a bit
" 2004 February 23: Cleaned up syntax highlighting for \begin{code} and
" \end{code}, added some clarification to the attributions
" 2008 July 1: Removed % from guess list, as it totally breaks plain
" text markup guessing
" 2009 April 29: Fixed highlighting breakage in TeX mode,
" thanks to Kalman Noel
"
" 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
" First off, see if we can inherit a user preference for lhs_markup
if !exists("b:lhs_markup")
if exists("lhs_markup")
if lhs_markup =~ '\<\%(tex\|none\)\>'
let b:lhs_markup = matchstr(lhs_markup,'\<\%(tex\|none\)\>')
else
echohl WarningMsg | echo "Unknown value of lhs_markup" | echohl None
let b:lhs_markup = "unknown"
endif
else
let b:lhs_markup = "unknown"
endif
else
if b:lhs_markup !~ '\<\%(tex\|none\)\>'
let b:lhs_markup = "unknown"
endif
endif
" Remember where the cursor is, and go to upperleft
let s:oldline=line(".")
let s:oldcolumn=col(".")
call cursor(1,1)
" If no user preference, scan buffer for our guess of the markup to
" highlight. We only differentiate between TeX and plain markup, where
" plain is not highlighted. The heuristic for finding TeX markup is if
" one of the following occurs anywhere in the file:
" - \documentclass
" - \begin{env} (for env != code)
" - \part, \chapter, \section, \subsection, \subsubsection, etc
if b:lhs_markup == "unknown"
if search('\\documentclass\|\\begin{\(code}\)\@!\|\\\(sub\)*section\|\\chapter|\\part','W') != 0
let b:lhs_markup = "tex"
else
let b:lhs_markup = "plain"
endif
endif
" If user wants us to highlight TeX syntax or guess thinks it's TeX, read it.
if b:lhs_markup == "tex"
if version < 600
source <sfile>:p:h/tex.vim
set isk+=_
else
runtime! syntax/tex.vim
unlet b:current_syntax
" Tex.vim removes "_" from 'iskeyword', but we need it for Haskell.
setlocal isk+=_
endif
syntax cluster lhsTeXContainer contains=tex.*Zone,texAbstract
else
syntax cluster lhsTeXContainer contains=.*
endif
" Literate Haskell is Haskell in between text, so at least read Haskell
" highlighting
if version < 600
syntax include @haskellTop <sfile>:p:h/haskell.vim
else
syntax include @haskellTop syntax/haskell.vim
endif
syntax region lhsHaskellBirdTrack start="^>" end="\%(^[^>]\)\@=" contains=@haskellTop,lhsBirdTrack containedin=@lhsTeXContainer
syntax region lhsHaskellBeginEndBlock start="^\\begin{code}\s*$" matchgroup=NONE end="\%(^\\end{code}.*$\)\@=" contains=@haskellTop,beginCodeBegin containedin=@lhsTeXContainer
syntax match lhsBirdTrack "^>" contained
syntax match beginCodeBegin "^\\begin" nextgroup=beginCodeCode contained
syntax region beginCodeCode matchgroup=texDelimiter start="{" end="}"
" 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_tex_syntax_inits")
if version < 508
let did_tex_syntax_inits = 1
command -nargs=+ HiLink hi link <args>
else
command -nargs=+ HiLink hi def link <args>
endif
HiLink lhsBirdTrack Comment
HiLink beginCodeBegin texCmdName
HiLink beginCodeCode texSection
delcommand HiLink
endif
" Restore cursor to original position, as it may have been disturbed
" by the searches in our guessing code
call cursor (s:oldline, s:oldcolumn)
unlet s:oldline
unlet s:oldcolumn
let b:current_syntax = "lhaskell"
" vim: ts=8
|