update `mimeapps.list`

markdown syntax checkpoint

.config/mimeapps.list

@@ -3,3 +3,5 @@ text/plain=nvim.desktop;
 text/markdown=nvim.desktop;
 application/pdf=org.pwmt.zathura.desktop;
 inode/directory=footclient-directory.desktop;
+x-scheme-handler/http=firefox.desktop;
+x-scheme-handler/https=firefox.desktop;

.config/nvim/colors/basic.lua

@@ -277,6 +277,7 @@ local syntax_warn_h = H:new():fg(black_c):bg(orange_c)
 local syntax_italic_h = H:new():attr("italic")
 local syntax_bold_h = H:new():attr("bold")
 local syntax_bolditalic_h = H:new():attr("bold"):attr("italic")
+local syntax_strike_h = H:new():attr("strikethrough")
 
 set_hl("Comment", syntax_comment_h)
 set_hl("Constant", syntax_constant_h)
@@ -317,6 +318,7 @@ set_hl("Todo", syntax_warn_h)
 set_hl("Italic", syntax_italic_h)
 set_hl("Bold", syntax_bold_h)
 set_hl("BoldItalic", syntax_bolditalic_h)
+set_hl("Strike", syntax_strike_h)
 
 -- markdown --------------------------------------------------------------------
 local markdown_label_h = H:new():fg(magenta_c)

.config/nvim/syntax/markdown.vim

@@ -1,231 +1,71 @@
 " Vim syntax file
 " Language:	Markdown
 " Maintainer:	urosm <urosm@kompot.si>
-" Last Change:	2024 Jan 13
+" Last Change:	2024 Feb 14
 
 if exists("b:current_syntax")
   finish
 endif
 
-runtime! syntax/html.vim
-unlet! b:current_syntax
-
 syntax spell toplevel
 
-" block formatting """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
-" setext heading
-syn match markdownSetexHeading /\%(\%^\|\_^\n\).\+\n[=-]\+\n$/ contains=@markdownInline,markdownSetextHeadingDelimiter,markdownHeadingAttribute
-hi def link markdownSetexHeading markdownTitle
-syn match markdownSetextHeadingDelimiter /^[=-]\+$/ contained
-hi def link markdownSetextHeadingDelimiter markdownDelimiter
-
-" atx heading
-syn match markdownAtxHeading /\%(\%^\|\_^\n\)#\{1,6} .*\n$/ contains=@markdownInline,markdownAtxHeadingDelimiter,markdownHeadingAttribute
-hi def link markdownAtxHeading markdownTitle
-syn match markdownAtxHeadingDelimiter /^#\{1,6}/ contained
-hi def link markdownAtxHeadingDelimiter markdownDelimiter
-syn match markdownHeadingAttribute /.*\zs{.\{-}}$/ contained
-hi def link markdownHeadingAttribute markdownDelimiter
-
-" titleblock
-syn region markdownTitleBlock start=/\%^%/ end=/\n$/ contains=@markdownInline,markdownTitleBlockDelimiter
-hi def link markdownTitleBlock markdownTitle
-syn match markdownTitleBlockDelimiter /%\ / contained
-hi def link markdownTitleBlockDelimiter markdownDelimiter
-
-" horizontal rule
-syn match markdownHRule /^\n\s*\*\s*\(\*\s*\)\{2,}\n$/ display
-syn match markdownHRule /^\n\s*\-\s*\(\-\s*\)\{2,}\n$/ display
-syn match markdownHRule /^\n\s*_\s*\(_\s*\)\{2,}\n$/ display
-hi def link markdownHRule markdownDelimiter
-
-" inline formatting """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 " emphasis
-syn region markdownItalic matchgroup=markdownDelimiter start=/\\\@1<!\(\_^\|\s\|[[:punct:]]\)\@<=\*\S\@=/ skip=/\(\*\*\|__\)/ end=/\*\([[:punct:]]\|\s\|\_$\)\@=/ contains=@Spell,markdownNoFormattedInEmphasis,markdownLatexInlineMath,markdownAmpersandEscape
-syn region markdownItalic matchgroup=markdownDelimiter start=/\\\@1<!\(\_^\|\s\|[[:punct:]]\)\@<=_\S\@=/ skip=/\(\*\*\|__\)/ end=/\S\@1<=_\([[:punct:]]\|\s\|\_$\)\@=/ contains=@Spell,markdownNoFormattedInEmphasis,markdownLatexInlineMath,markdownAmpersandEscape
-hi def link markdownItalic htmlItalic
+syn region markdownItalic matchgroup=markdownDelimiter start=/\\\@1<!\(\_^\|\s\|[[:punct:]]\)\@<=\*\S\@=/ skip=/\(\*\*\|__\)/ end=/\*\([[:punct:]]\|\s\|\_$\)\@=/ contains=@Spell
+syn region markdownItalic matchgroup=markdownDelimiter start=/\\\@1<!\(\_^\|\s\|[[:punct:]]\)\@<=_\S\@=/ skip=/\(\*\*\|__\)/ end=/\S\@1<=_\([[:punct:]]\|\s\|\_$\)\@=/ contains=@Spell
 
 " bold
-syn region markdownBold matchgroup=markdownDelimiter start=/\(\\\@<!\*\)\{2}/ end=/\(\\\@<!\*\)\{2}/ contains=@Spell,markdownNoFormattedInStrong,markdownLatexInlineMath,markdownAmpersandEscape
-syn region markdownBold matchgroup=markdownDelimiter start=/__/ end=/__/ contains=@Spell,markdownNoFormattedInStrong,markdownLatexInlineMath,markdownAmpersandEscape
-hi def link markdownBold htmlBold
+syn region markdownBold matchgroup=markdownDelimiter start=/\(\\\@<!\*\)\{2}/ end=/\(\\\@<!\*\)\{2}/ contains=@Spell
+syn region markdownBold matchgroup=markdownDelimiter start=/__/ end=/__/ contains=@Spell
 
 " bold italic
-syn region markdownBoldItalic matchgroup=markdownDelimiter start=/\*\{3}\(\S[^*]*\(\*\S\|\n[^*]*\*\S\)\)\@=/ end=/\S\@<=\*\{3}/ contains=@Spell,markdownAmpersandEscape
-syn region markdownBoldItalic matchgroup=markdownDelimiter start=/\(___\)\S\@=/ end=/\S\@<=___/ contains=@Spell,markdownAmpersandEscape
-hi def link markdownBoldItalic htmlBoldItalic
-syn region markdownBoldInItalic matchgroup=markdownDelimiter start=/\*\*/ end=/\*\*/ contained containedin=markdownItalic contains=@Spell,markdownAmpersandEscape
-syn region markdownBoldInItalic matchgroup=markdownDelimiter start=/__/ end=/__/ contained containedin=markdownItalic contains=@Spell,markdownAmpersandEscape
-syn region markdownItalicInBold matchgroup=markdownDelimiter start=/\\\@1<!\(\_^\|\s\|[[:punct:]]\)\@<=\*\S\@=/ skip=/\(\*\*\|__\)/ end=/\S\@<=\*\([[:punct:]]\|\s\|\_$\)\@=/ contained containedin=markdownBold contains=@Spell,markdownAmpersandEscape
-syn region markdownItalicInBold matchgroup=markdownDelimiter start=/\\\@<!\(\_^\|\s\|[[:punct:]]\)\@<=_\S\@=/ skip=/\(\*\*\|__\)/ end=/\S\@<=_\([[:punct:]]\|\s\|\_$\)\@=/ contained containedin=markdownBold contains=@Spell,markdownAmpersandEscape
+syn region markdownBoldItalic matchgroup=markdownDelimiter start=/\*\{3}\(\S[^*]*\(\*\S\|\n[^*]*\*\S\)\)\@=/ end=/\S\@<=\*\{3}/ contains=@Spell
+syn region markdownBoldItalic matchgroup=markdownDelimiter start=/\(___\)\S\@=/ end=/\S\@<=___/ contains=@Spell
+
+syn region markdownBoldInItalic matchgroup=markdownDelimiter start=/\*\*/ end=/\*\*/ contained containedin=markdownItalic contains=@Spell
+syn region markdownBoldInItalic matchgroup=markdownDelimiter start=/__/ end=/__/ contained containedin=markdownItalic contains=@Spell
 hi def link markdownBoldInItalic markdownBoldItalic
+
+syn region markdownItalicInBold matchgroup=markdownDelimiter start=/\\\@1<!\(\_^\|\s\|[[:punct:]]\)\@<=\*\S\@=/ skip=/\(\*\*\|__\)/ end=/\S\@<=\*\([[:punct:]]\|\s\|\_$\)\@=/ contained containedin=markdownBold contains=@Spell
+syn region markdownItalicInBold matchgroup=markdownDelimiter start=/\\\@<!\(\_^\|\s\|[[:punct:]]\)\@<=_\S\@=/ skip=/\(\*\*\|__\)/ end=/\S\@<=_\([[:punct:]]\|\s\|\_$\)\@=/ contained containedin=markdownBold contains=@Spell
 hi def link markdownItalicInBold markdownBoldItalic
 
 " link
-syn match markdownLink /!\=\[\_.\{-}\](\_.\{-})/ contains=markdownLinkLabel
-hi def link markdownLink markdownUnderlined
-syn match markdownLinkLabel /\[\@1<=[^\]]\+/ contained contains=@markdownInline
+syn match markdownLink /!\=\[\_.\{-}\](\_.\{-})/ contains=markdownLinkLabel,markdownLinkURL
+syn match markdownLinkLabel /\[\zs.*\ze\]/ contained
 hi def link markdownLinkLabel markdownLabel
+syn match markdownLinkURL /.*(\zs.*\ze)/ contained
+hi def link markdownLinkURL markdownUnderlined
 
 " automatic link
-syn match markdownAutomaticLink /<\(https\{0,1}.\{-}\|[A-Za-z0-9!#$%&'*+\-/=?^_`{|}~.]\{-}@[A-Za-z0-9\-]\{-}\.\w\{-}\)>/ contains=NONE
+syn match markdownAutomaticLink /<\(https\{0,1}.\{-}\|[A-Za-z0-9!#$%&'*+\-/=?^_`{|}~.]\{-}@[A-Za-z0-9\-]\{-}\.\w\{-}\)>/
 hi def link markdownAutomaticLink markdownUnderlined
 
 " wikilink
-syn match markdownWikilink /\[\[.*\]\]/ contains=markdownWikilinkLabel
-hi def link markdownWikilink markdownUnderlined
-
-syn region markdownWikilink start=/\[\[/ end=/\]\]/ contains=markdownWikilinkLabel,markdownWikilinkURL keepend display
-syn match markdownWikilinkLabel /\(\[\[\)\@2<=[^\|\[\]]\+/ contained
+" NOTE: update to support newlines in titles
+syn match markdownWikilink /\[\[.*\]\]/ contains=markdownWikilinkLabel,markdownWikilinkURL
+syn match markdownWikilinkLabel /\[\[\zs.\{-}\ze|.*\]\]/ contained
 hi def link markdownWikilinkLabel markdownLabel
-syn match markdownWikilinkURL /|\@1<=[^\]]\+/ contained
+syn match markdownWikilinkURL /\%(\[\[\||\)\zs[^|]*\ze\]\]/ contained
 hi def link markdownWikilinkURL markdownUnderlined
 
-" definition
-syn region markdownReferenceDefinition start=/\[.\{-}\]:/ end=/\(\n\s*".*"$\|$\)/ keepend
-hi def link markdownReferenceDefinition markdownDelimiter
-syn match markdownReferenceDefinitionLabel /\[\zs.\{-}\ze\]:/ contained containedin=markdownReferenceDefinition display
-hi def link markdownReferenceDefinitionLabel markdownLabel
-syn match markdownReferenceDefinitionURL /:\s*\zs.*/ contained containedin=markdownReferenceDefinition
-hi def link markdownReferenceDefinitionURL markdownUnderlined
-syn match markdownReferenceDefinitionTitle /\s*".\{-}"/ contained containedin=markdownReferenceDefinition,markdownReferenceDefinitionURL contains=@Spell,markdownAmpersandEscape
-hi def link markdownReferenceDefinitionTitle markdownTitle
+" footnote reference
+syn match markdownFootnoteReference /\[\zs\^.\{-}\ze\]/
+hi def link markdownFootnoteReference markdownLabel
 
-" citation
-syn match markdownPCite "\^\@<!\[[^\[\]]\{-}-\{0,1}@[[:alnum:]_][[:digit:][:lower:][:upper:]_:.#$%&\-+?<>~/]*.\{-}\]" contains=markdownItalic,markdownBold,markdownLatex,markdownCiteKey,@Spell,markdownAmpersandEscape
-syn match markdownICite "@[[:alnum:]_][[:digit:][:lower:][:upper:]_:.#$%&\-+?<>~/]*\s\[.\{-1,}\]" contains=markdownCiteKey,@Spell display
-syn match markdownCiteKey /\(-\=@[[:alnum:]_][[:digit:][:lower:][:upper:]_:.#$%&\-+?<>~/]*\)/ containedin=markdownPCite,markdownICite contains=@NoSpell display
-hi def link markdownCiteKey markdownLabel
-syn match markdownCiteLocator /[\[\]]/ contained containedin=markdownPCite,markdownICite
-hi def link markdownCiteLocator markdownDelimiter
-
-
-" strikeout
-syn region markdownStrike start=/\~\~/ end=/\~\~/ contains=markdownStrikeout,@Spell keepend
-hi def link markdownStrike htmlStrike
-syn match markdownStrikeDelimiter /\~\~/ contained
-hi def link markdownStrikeDelimiter markdownDelimiter
-
-" subscript
-syn region markdownSubscript start=/\~\(\([[:graph:]]\(\\ \)\=\)\{-}\~\)\@=/ end=/\~/ contains=markdownSubscriptDelimiter keepend
-syn match markdownSubscriptDelimiter /\~/ contained
-hi def link markdownSubscriptDelimiter markdownDelimiter
-
-" superscript
-syn region markdownSuperscript start=/\^\(\([[:graph:]]\(\\ \)\=\)\{-}\^\)\@=/ skip=/\\ / end=/\^/ contains=markdownSuperscriptDelimiter keepend
-syn match markdownSuperscriptDelimiter /\^/ contained
-hi def link markdownSuperscriptDelimiter markdownDelimiter
-
-" line block
-syn region markdownLineBlock start=/^|/ end=/\(^|\(.*\n|\@!\)\@=.*\)\@<=\n/ transparent
-syn match markdownLineBlockDelimiter /^|/ contained containedin=markdownLineBlock
-hi def link markdownLineBlockDelimiter markdownDelimiter
-
-" simple table
-syn region markdownSimpleTable start=/\%#=2\(^.*[[:graph:]].*\n\)\@<!\(^.*[[:graph:]].*\n\)\(-\{2,}\s*\)\+\n\n\@!/ end=/\n\n/ containedin=ALLBUT,markdownDelimitedCodeBlock,markdownDelimitedCodeBlockStart,markdownYAMLHeader keepend
-syn match markdownSimpleTableDelims /\-/ contained containedin=markdownSimpleTable
-syn match markdownSimpleTableHeader /\%#=2\(^.*[[:graph:]].*\n\)\@<!\(^.*[[:graph:]].*\n\)/ contained containedin=markdownSimpleTable
-hi def link markdownSimpleTableDelims markdownDelimiter
-hi def link markdownSimpleTableHeader markdownBold
-
-syn region markdownTable start=/\%#=2^\(-\{2,}\s*\)\+\n\n\@!/ end=/\%#=2^\(-\{2,}\s*\)\+\n\n/ containedin=ALLBUT,markdownDelimitedCodeBlock,markdownYAMLHeader keepend
-syn match markdownTableDelims /\-/ contained containedin=markdownTable
-syn region markdownTableMultilineHeader start=/\%#=2\(^-\{2,}\n\)\@<=./ end=/\%#=2\n-\@=/ contained containedin=markdownTable
-hi def link markdownTableMultilineHeader markdownBold
-hi def link markdownTableDelims markdownDelimiter
-
-" grid table
-syn region markdownGridTable start=/\%#=2\n\@1<=+-/ end=/+\n\n/ containedin=ALLBUT,markdownDelimitedCodeBlock,markdownYAMLHeader keepend
-syn match markdownGridTableDelims /[\|=]/ contained containedin=markdownGridTable
-syn match markdownGridTableDelims /\%#=2\([\-+][\-+=]\@=\|[\-+=]\@1<=[\-+]\)/ contained containedin=markdownGridTable
-syn match markdownGridTableHeader /\%#=2\(^.*\n\)\(+=.*\)\@=/ contained containedin=markdownGridTable
-hi def link markdownGridTableDelims markdownDelimiter
-hi def link markdownGridTableHeader markdownDelimiter
-
-" pipe table
-syn region markdownPipeTable start=/\%#=2\([+|]\n\)\@<!\n\@1<=|\(.*|\)\@=/ end=/|.*\n\(\n\|{\)/ containedin=ALLBUT,markdownDelimitedCodeBlock,markdownYAMLHeader keepend
-syn region markdownPipeTable start=/\%#=2^.*\n-.\{-}|/ end=/|.*\n\n/ keepend
-syn match markdownPipeTableDelims /[\|\-:+]/ contained containedin=markdownPipeTable
-syn match markdownPipeTableHeader /\(^.*\n\)\(|-\)\@=/ contained containedin=markdownPipeTable
-syn match markdownPipeTableHeader /\(^.*\n\)\(-\)\@=/ contained containedin=markdownPipeTable
-hi def link markdownPipeTableDelims markdownDelimiter
-hi def link markdownPipeTableHeader markdownDelimiter
-
-syn match markdownTableHeaderWord /\<.\{-}\>/ contained containedin=markdownGridTableHeader,markdownPipeTableHeader contains=@Spell
-hi def link markdownTableHeaderWord markdownBold
-
-
-" delimited code blocks
-syn region markdownDelimitedCodeBlock start=/^\(>\s\)\?\z(\([ ]\+\|\t\)\=\~\{3,}\~*\)/ end=/^\z1\~*/ skipnl contains=markdownDelimitedCodeBlockStart,markdownDelimitedCodeBlockEnd keepend
-syn region markdownDelimitedCodeBlock start=/^\(>\s\)\?\z(\([ ]\+\|\t\)\=`\{3,}`*\)/ end=/^\z1`*/ skipnl contains=markdownDelimitedCodeBlockStart,markdownDelimitedCodeBlockEnd keepend
-syn match markdownDelimitedCodeBlockStart /\(\(\_^\n\_^\|\%^\)\(>\s\)\?\( \+\|\t\)\=\)\@<=\(\~\{3,}\~*\|`\{3,}`*\)/ contained containedin=markdownDelimitedCodeBlock nextgroup=markdownDelimitedCodeBlockLanguage
-syn match markdownDelimitedCodeBlockLanguage /\(\s\?\)\@<=.\+\(\_$\)\@=/ contained
-syn match markdownDelimitedCodeBlockEnd /\(`\{3,}`*\|\~\{3,}\~*\)\(\_$\n\(>\s\)\?\_$\)\@=/ contained containedin=markdownDelimitedCodeBlock
-syn match markdownBlockquoteinDelimitedCodeBlock '^>' contained containedin=markdownDelimitedCodeBlock
-syn match markdownCodePre /<pre>.\{-}<\/pre>/ skipnl
-syn match markdownCodePre /<code>.\{-}<\/code>/ skipnl
-hi def link markdownDelimitedCodeBlock markdownSpecial
-hi def link markdownDelimitedCodeBlockStart markdownDelimiter
-hi def link markdownDelimitedCodeBlockEnd markdownDelimiter
-hi def link markdownDelimitedCodeBlockLanguage markdownComment
-hi def link markdownBlockquoteinDelimitedCodeBlock markdownBlockquote
-hi def link markdownCodePre markdownString
-
-" footnote
-syn match markdownFootnoteID /\[\^[^\]]\+\]/ nextgroup=markdownFootnoteDef
-hi def link markdownFootnoteID markdownLabel
-
-" inline footnote
-syn region markdownFootnoteDef start=/\^\[/ skip=/\[.\{-}]/ end=/\]/ contains=markdownLink,markdownLatex,markdownPCite,markdownCiteKey,markdownBold,markdownItalic,markdownBoldItalic,markdownNoFormatted,markdownSuperscript,markdownSubscript,markdownStrike,markdownEnDash,markdownEmDash,markdownEllipses,markdownBeginQuote,markdownEndQuote,@Spell,markdownAmpersandEscape skipnl keepend
-hi def link markdownFootnoteDef markdownComment
-syn match markdownFootnoteDefHead /\^\[/ contained containedin=markdownFootnoteDef
-hi def link markdownFootnoteDefHead markdownDelimiter
-syn match markdownFootnoteDefTail /\]/ contained containedin=markdownFootnoteDef
-hi def link markdownFootnoteDefTail markdownDelimiter
-
-" regular footnotes
-syn region markdownFootnoteBlock start=/\[\^.\{-}\]:\s*\n*/ end=/^\n^\s\@!/ contains=markdownLink,markdownLatex,markdownPCite,markdownCiteKey,markdownBold,markdownItalic,markdownNoFormatted,markdownSuperscript,markdownSubscript,markdownStrike,markdownEnDash,markdownEmDash,markdownNewLine,markdownBoldItalic,markdownEllipses,markdownBeginQuote,markdownEndQuote,markdownLaTeXInlineMath,markdownEscapedDollar,markdownLaTeXCommand,markdownLaTeXMathBlock,markdownLaTeXRegion,markdownAmpersandEscape,@Spell skipnl
-syn match markdownFootnoteBlockSeparator /:/ contained containedin=markdownFootnoteBlock
-hi def link markdownFootnoteBlockSeparator markdownDelimiter
-syn match markdownFootnoteID /\[\^.\{-}\]/ contained containedin=markdownFootnoteBlock
-syn match markdownFootnoteIDHead /\[\^/ contained containedin=markdownFootnoteID
-hi def link markdownFootnoteIDHead markdownDelimiter
-syn match markdownFootnoteIDTail /\]/ contained containedin=markdownFootnoteID
-hi def link markdownFootnoteIDTail markdownDelimiter
-
-" unordered list
-syn match markdownUListItem /^>\=\s*[*+-]\s\+-\@!.*$/ nextgroup=markdownUListItem,markdownLaTeXMathBlock,markdownLaTeXInlineMath,markdownEscapedDollar,markdownDelimitedCodeBlock,markdownListItemContinuation contains=@Spell,markdownItalic,markdownBold,markdownNoFormatted,markdownStrike,markdownSubscript,markdownSuperscript,markdownBoldItalic,markdownBoldItalic,markdownPCite,markdownICite,markdownCiteKey,markdownLinkText,markdownLaTeXCommand,markdownLaTeXMathBlock,markdownLaTeXInlineMath,markdownEscapedDollar,markdownLinkURL,markdownAutomaticLink,markdownFootnoteDef,markdownFootnoteBlock,markdownFootnoteID,markdownAmpersandEscape skipempty display
-syn match markdownUListItemBullet /^>\=\s*\zs[*+-]/ contained containedin=markdownUListItem
-hi def link markdownUListItemBullet markdownOperator
-
-" ordered list
-syn match markdownListItem /^\s*(\?\(\d\+\|\l\|\#\|@\)[.)].*$/ nextgroup=markdownListItem,markdownLaTeXMathBlock,markdownLaTeXInlineMath,markdownEscapedDollar,markdownDelimitedCodeBlock,markdownListItemContinuation contains=@Spell,markdownItalic,markdownBold,markdownNoFormatted,markdownStrike,markdownSubscript,markdownSuperscript,markdownBoldItalic,markdownBoldItalic,markdownPCite,markdownICite,markdownCiteKey,markdownLinkText,markdownLaTeXCommand,markdownLaTeXMathBlock,markdownLaTeXInlineMath,markdownEscapedDollar,markdownAutomaticLink,markdownFootnoteDef,markdownFootnoteBlock,markdownFootnoteID,markdownAmpersandEscape skipempty display
-syn match markdownListItem /^\s*(\?x\=l\=\(i\{,3}[vx]\=\)\{,3}c\{,3}[.)].*$/ nextgroup=markdownListItem,markdownMathBlock,markdownLaTeXInlineMath,markdownEscapedDollar,markdownDelimitedCodeBlock,markdownListItemContinuation,markdownAutomaticLink skipempty display
-syn match markdownListItemBullet /^(\?.\{-}[.)]/ contained containedin=markdownListItem
-syn match markdownListItemBulletId /\(\d\+\|\l\|\#\|@.\{-}\|x\=l\=\(i\{,3}[vx]\=\)\{,3}c\{,3}\)/ contained containedin=markdownListItemBullet
-hi def link markdownListItemBullet markdownOperator
-hi def link markdownListItemBulletId markdownIdentifier
-
-syn match markdownListItemContinuation /^\s\+\([-+*]\s\+\|(\?.\+[).]\)\@<!\([[:upper:][:lower:]_"[]\|\*\S\)\@=.*$/ nextgroup=markdownLaTeXMathBlock,markdownLaTeXInlineMath,markdownEscapedDollar,markdownDelimitedCodeBlock,markdownListItemContinuation,markdownListItem contains=@Spell,markdownItalic,markdownBold,markdownNoFormatted,markdownStrike,markdownSubscript,markdownSuperscript,markdownBoldItalic,markdownBoldItalic,markdownPCite,markdownICite,markdownCiteKey,markdownLink,markdownLaTeXCommand,markdownLaTeXMathBlock,markdownLaTeXInlineMath,markdownEscapedDollar,markdownAutomaticLink,markdownFootnoteDef,markdownFootnoteBlock,markdownFootnoteID,markdownAmpersandEscape contained skipempty display
-
-" definition list
-syn region markdownDefinitionBlock start=/^\%(\_^\s*\([`~]\)\1\{2,}\)\@!.*\n\(^\s*\n\)\=\s\{0,2}\([:~]\)\(\3\{2,}\3*\)\@!/ skip=/\n\n\zs\s/ end=/\n\n/ contains=markdownDefinitionBlockDelimiter,markdownDefinitionBlockTerm,markdownCodeBlockInsideIndent,markdownItalic,markdownBold,markdownBoldItalic,markdownNoFormatted,markdownStrike,markdownSubscript,markdownSuperscript,markdownFootnoteID,markdownLinkURL,markdownLinkText,markdownLaTeXMathBlock,markdownLaTeXInlineMath,markdownEscapedDollar,markdownAutomaticLink,markdownEmDash,markdownEnDash,markdownFootnoteDef,markdownFootnoteBlock,markdownFootnoteID
-syn match markdownDefinitionBlockTerm /^.*\n\(^\s*\n\)\=\(\s*[:~]\)\@=/ contained contains=markdownNoFormatted,markdownItalic,markdownBold,markdownLaTeXInlineMath,markdownEscapedDollar,markdownFootnoteDef,markdownFootnoteBlock,markdownFootnoteID nextgroup=markdownDefinitionBlockDelimiter
-syn match markdownDefinitionBlockDelimiter /^\s*[:~]/ contained
-hi def link markdownDefinitionBlockTerm markdownIdentifier
-hi def link markdownDefinitionBlockDelimiter markdownDelimiter
-
-" new line
-syn match markdownNewLine /\%(\%(\S\)\@<= \{2,}\|\\\)$/ display containedin=markdownItalic,markdownBold,markdownBoldItalic,markdownBoldInItalic,markdownItalicInBold
-hi def link markdownNewLine markdownError
+" reference key
+syn match markdownReferenceKey /@[[:alnum:]_][[:digit:][:lower:][:upper:]_:.#$%&-+?<>~\/]*/
+hi def link markdownReferenceKey markdownLabel
 
+" html comment
+syn region markdownHTMLcomment start=/<!--/ end=/-->/ keepend contains=@Spell
+hi def link markdownHTMLcomment markdownComment
 
 " yaml
 syn include @YAML syntax/yaml.vim
 unlet! b:current_syntax
 syn region markdownYAMLHeader start=/\%(\%^\|\_^\s*\n\)\@<=\_^-\{3}\ze\n.\+/ end=/^\([-.]\)\1\{2}$/ keepend contains=@YAML containedin=TOP
 
-" Styling
+" styling
 hi def link markdownComment Comment
 hi def link markdownConstant Constant
 hi def link markdownString String
@@ -261,10 +101,10 @@ hi def link markdownUnderlined Underlined
 hi def link markdownIgnore Ignore
 hi def link markdownError Error
 
-hi def link markdownItalic htmlItalic
-hi def link markdownBold htmlBold
-hi def link markdownItalicBold htmlItalicBold
-hi def link markdownStrike htmlStrike
+hi def link markdownItalic Italic
+hi def link markdownBold Bold
+hi def link markdownBoldItalic BoldItalic
+hi def link markdownStrike Strike
 hi def link markdownTitle Title
 
 let b:current_syntax = "markdown"