linux vim下如何让类似txt的文本，呈现出某种语言的高亮形式？

[hair_man]

linux vim下如何让类似txt的文本，或者无后缀的文本文件，呈现出某种语言的高亮形式？
例如：一个简单的C的helloword程序，写在了helloword.mycs文件中，怎么让他显示C的高亮语法？

[赵4老师]

cp helloword.mycs helloword.mycs.c

[hongwenjun]

http://srgb.vicp.net/srgb/vim/txt.vim 复制一份 txt.vim 到 VIM的高亮文件夹里 ，

"Script_name: txt.vim
"Author: [e-mail]
"Date: 2011/08/07
"Release: 1.3.5
"Description: syntax for plain/text.
"Language: text/plain :)
"Location: $HOME/.vim/syntax or $VIMRUNTIME/syntax/
"Install_detail:
        "1. put this file in $HOME/.vim/syntax or $VIMRUNTIME/syntax/ 
        "2. Add the following line in your .vimrc:
        "syntax on "syntax highlighting on
        "filetype plugin on
        "au BufRead,BufNewFile *.txt setlocal ft=txt "syntax highlight for txt.vim 

"set case insensitive.
syn case ignore

"This script is encoded as utf8, and will convert to appropriate value when running.
scriptencoding utf-8

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" key words definition.
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"Keywords
syn keyword txtTodo todo fixme note debug comment notice
syn keyword txtError error bug caution dropped

"txtComment: Lines that start with '#'
"以#号打头的行为注释文本
syn match   txtComment '^#.*$' contains=txtTodo

"txtTitle: Lines start with digit and '.'
"标题文本: 前面有任意个空格,数字.[数字.]打头, 并且该行里不含有,.。，等标点符号
"
syn match txtTitle "^\(\d\+ \)\+\s*[^,。，]\+$"
syn match txtTitle "^\(\d\+ \)\+\s*[^,。，]\+$"
"
syn match txtTitle "^\(\d\+\.\)\+\s*[^,。，]\+$"
syn match txtTitle "^\(\d\+\.\)\+\s*[^,。，]\+,"

"txtTitle: Lines start with Chinese digit and '.'
"标题文本: 汉字数字加'.、'打头，且该行不含,.。，标点符号
syn match txtTitle "^\([一二三四五六七八九十][、.]\)\+\s*[^,。，]\+$"
syn match txtTitle "^\([一二三四五六七八九十][、.]\)\+\s*[^,。，]\+,"

"txtTitle: Lines start with digit
"标题文本: 以数字打头, 中间有空格, 后跟任意文字. 且该行不含有,.。，标点符号
syn match txtTitle "^\d\s\+.\+\s*[^,。，]$"
syn match txtTitle "^\d\s\+.\+\s*[^,。，],"

"txtList: Lines start with space and then '-+*.'
"列表文本: 任意空格打头, 后跟一个[-+*.]
syn match txtList    '^\s*\zs[-+*.] [^ ]'me=e-1

"txtList: Lines start with space and then digit
"列表文本: 任意空格打头, 后跟一个(数字) 或 (字母) 打头的文本行
syn match txtList    '^\s*\zs(\=\([0-9]\+\|[a-zA-Z]\))'

"txtList: Lines start with space and then digit and '.'
"列表文本: 至少一个空格打头, [数字.]打头, 但随后不能跟数字(排除把5.5这样的文
"本当成列表) 
syn match txtList "^\s\+\zs\d\+\.\d\@!"

"txtApostrophe: text in the apostrophe
"单引号内文字, 作用范围最多两行.
syn match   txtApostrophe  '\(\n\|[^a-zA-Z]\)\'[^\']\+\(\n\)\=[^\']\+\'\(\n\|[^a-zA-Z]\)' contains=txtUrl,txtReference

"txtQuotes: text in the quotoes
"双引号内文字, 包括全角半角, 作用范围最多两行
syn match   txtQuotes     '["“][^"”]\+\(\n\)\=[^"”]*["”]' contains=txtUrl,txtReference

"txtParentesis: text in the parentesis
"括号内文字, 不在行首(为了和txtList区别), 作用范围最多两行
syn match   txtParentesis "[(（][^)）]\+\(\n\)\=[^)）]*[)）]" contains=txtUrl,txtReference

"txtBrackets: text in the brackets
"其它括号内文字, 作用范围最多两行, 大括号无行数限制
syn match txtBrackets     '<[^<]\+\(\n\)\=[^<]*>' contains=txtUrl,txtReference
syn match txtBrackets     '\[[^\[]\+\(\n\)\=[^\[]*\]' contains=txtUrl,txtReference
"syn region txtBrackets    matchgroup=txtOperator start="{"        end="}" contains=txtUrl,txtReference

"link url
syn match txtUrl '\<[A-Za-z0-9_.-]\+@\([A-Za-z0-9_-]\+\.\)\+[A-Za-z]\{2,4}\>\(?[A-Za-z0-9%&=+.,@*_-]\+\)\='
syn match txtUrl   '\<\(\(https\=\|ftp\|news\|telnet\|gopher\|wais\)://\([A-Za-z0-9._-]\+\(:[^ @]*\)\=@\)\=\|\(www[23]\=\.\|ftp\.\)\)[A-Za-z0-9%._/~:,=$@-]\+\>/*\(?[A-Za-z0-9/%&=+.,@*_-]\+\)\=\(#[A-Za-z0-9%._-]\+\)\='

"email text:
syn match txtEmailMsg '^\s*\(From\|De\|Sent\|To\|Para\|Date\|Data\|Assunto\|Subject\):.*'
"reference from reply email, quotes, etc.
syn match   txtReference '^[|>:]\(\s*[|>:]\)*'

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"类html文本
"syn match   txtBold       '\*[^*[:blank:]].\{-}\*'hs=s+1,he=e-1
"syn match txtItalic "^\s\+.\+$" "斜体文本

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" color definitions (specific)
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"hi txtUrl        term=bold        cterm=bold  ctermfg=blue    gui=underline     guifg=blue
"hi txtTitle     term=bold       cterm=bold      ctermfg=black   gui=bold        guifg=black
hi link txtUrl      Underlined"ModeMsg"Tabline"PmenuSbar
hi link txtTitle      Title"ModeMsg"Tabline"PmenuSbar
hi link txtList         SignColumn"Pmenu"DiffText"Statement
hi link txtComment      Special "Comment
hi link txtReference    DiffAdd "Comment
hi link txtQuotes       MoreMsg"String
hi link txtApostrophe    MoreMsg"Special
hi link txtParentesis   Special "Comment
hi link txtBrackets  Special
hi link txtError  ErrorMsg
hi link txtTodo  Todo
hi link txtEmailMsg     Structure


" Read the C++ syntax to start with
if version < 600
  so <sfile>:p:h/cpp.vim
else
  runtime! syntax/cpp.vim
  unlet b:current_syntax
endif



let b:current_syntax = 'txt'
" vim:tw=0:et

[hongwenjun]

VIM里类似效果，这个html是 VIM里转的

[hair_man]

vim里面应该可以利用后缀去重定向的吧，类似好几种后缀使用同一种语法，应该是可以实现的吧。 就是因为有某种需求才会使用自定义后缀名啊，修改了后缀为.c还有什么意义呢。

[hair_man]

hongwenjun 方法我试试

[hair_man]

最后查找到结果，其实很简单 （red hat7.0下）对所有用户有效则 修改 /usr/share/vim/vim74/filetype.vim 文件即可。需要把自己的自定义扩展名定义为某一种语法则直接搜索，复制并修改为 au BufNewFile,BufRead *（.mycs自定义后缀名称） setf （目标语法）即可。