vim help file BNF

/icons/注意.icon 消すのも勿体無かったのでメモまで。不完全です

code-block のところが先頭スペース(タブ)でない場合に code-block を抜けるようにできていない

code:text

<vimhelp> = line*

<line> = section-head / code-block / heading / divider / text

EOL = #'(\r\n|$)'

(* ---- TEXT BLOCK ---- *)

text = tokens (<EOL>|<beginning-of-code-block>)

<token> = tag / ref / code / constant / url / char

<tokens> = token*

tag = <'*'> #'^*\r\n+' <'*'>

ref = <'|'> #'^|\r\n+' <'|'>

code = <''> #'[^\r\n]+' <'`'>

constant = <'{'> #'^{}\r\n+' <'}'>

<char> = #'(?! >(\r\n|$)).'

(* ---- SECTION HEAD ---- *)

<section-title> = #'A-Z -+'

section-head = section-title tag <EOL>

(* ---- CODE BLOCK ---- *)

beginning-of-code-block = #'(?= >(\r\n|$)).'

code-block-open = ' '? '>' <EOL>

code-block-close = <EOL> '<' <EOL>

<code-block-char> = #'((?!<(\r\n|$)).|\r|\n)'

code-block = <code-block-open> code-block-char* <code-block-close>

(* ---- HEADING ---- *)

<heading-char> = #'(?!~(\r\n|$)).'

heading = heading-char+ <'~'> <EOL>

(* ---- DIVIDER ---- *)