为vim 添加自定义的 Syntax
以C 为例，在 $VIM/vimfiles/syntax/ 里新建一个 c.vim ，加入下面内容：
"========================================================
" Highlight All Function"========================================================
syn match cFunction "\<[a-zA-Z_][a-zA-Z_0-9]*\>[^()]*)("me=e-2
syn match cFunction "\<[a-zA-Z_][a-zA-Z_0-9]*\>\s*("me=e-1
hi cFunction gui=NONE guifg=#B5A1FF
"========================================================
" Highlight All Math Operator
"========================================================
" C math operators
syn match cMathOperator display "[-+\*/%=]"
" C pointer operators
syn match cPointerOperator display "->\|\."
" C logical operators - boolean results
syn match cLogicalOperator display "[!<>]=\="
syn match cLogicalOperator display "=="
" C bit operators
syn match cBinaryOperator display "\(&\||\|\^\|<<\|>>\)=\="
syn match cBinaryOperator display "\~"
syn match cBinaryOperatorError display "\~="
" More C logical operators - highlight in preference to binary
syn match cLogicalOperator display "&&\|||"
syn match cLogicalOperatorError display "\(&&\|||\)="
" Math Operator
hi cMathOperator ctermfg=154 guifg=#ADFF2F
hi cPointerOperator ctermfg=154 guifg=#ADFF2F
hi cLogicalOperator ctermfg=154 guifg=#ADFF2F
hi cBinaryOperator ctermfg=154 guifg=#ADFF2F
hi cBinaryOperatorError ctermfg=154 guifg=#ADFF2F
hi cLogicalOperator ctermfg=154 guifg=#ADFF2F
hi cLogicalOperatorError ctermfg=154 guifg=#ADFF2F
"========================================================
" My Own DataType
"========================================================
syn keyword cType 类甲 类乙 类丙
颜色代码的选取可以对照下面两个网页：
1. 终端字符颜色代码（例如上面的 ctermfg=154）
