would swallow the rest of the file " That group stays cleared. The comment region replaces yats' block " comment, whose "extend" would escape every containing region below. silent! syn clear typescriptTypeArguments silent! syn clear typescriptComment syn region typescriptComment contained start="/\*" end="\*/" contains=@Spell,typescriptCommentTodo " yats claims call arguments, bodies, indexing, arrays, templates and " parenthesized expressions via nextgroup, so the markoTS* pairs below " never see those delimiters. Each row is yats' own definition plus " "contained extend", the one difference from upstream: a multiline group " keeps its containing attribute value open, and a bracketed one shields " the spaces inside, as the parser's group tracking does: " count=Math.max(0, tiers.findIndex((t) => t.featured)) " pair=raw as [string, string] for s:def in [ \ 'typescriptBlock matchgroup=typescriptBraces start=/{/ end=/}/ contains=@typescriptStatement,@typescriptComments fold', \ 'typescriptFuncCallArg matchgroup=typescriptParens start=/(/ end=/)/ contains=@typescriptValue,@typescriptComments,typescriptCastKeyword nextgroup=@typescriptSymbols,typescriptDotNotation skipwhite skipempty skipnl', \ 'typescriptArray matchgroup=typescriptBraces start=/\[/ end=/]/ contains=@typescriptValue,@typescriptComments,typescriptCastKeyword nextgroup=@typescriptSymbols,typescriptDotNotation skipwhite skipempty fold', \ 'typescriptTemplate start=/`/ skip=/\\\\\|\\`\|\n/ end=/`\|$/ contains=typescriptTemplateSubstitution,typescriptSpecial,@Spell nextgroup=@typescriptSymbols skipwhite skipempty', \ 'typescriptObjectLiteral matchgroup=typescriptBraces start=/{/ end=/}/ contains=@typescriptComments,typescriptObjectLabel,typescriptStringProperty,typescriptComputedPropertyName,typescriptObjectAsyncKeyword,typescriptTernary,typescriptCastKeyword fold', \ 'typescriptObjectType matchgroup=typescriptBraces start=/{/ end=/}/ contains=@typescriptTypeMember,typescriptEndColons,@typescriptComments,typescriptAccessibilityModifier,typescriptReadonlyModifier nextgroup=@typescriptTypeOperator skipwhite skipnl fold', \ 'typescriptParenExp matchgroup=typescriptParens start=/(/ end=/)/ contains=@typescriptComments,@typescriptValue,typescriptCastKeyword nextgroup=@typescriptSymbols skipwhite skipempty', \ 'typescriptIndexExpr matchgroup=typescriptProperty start=/\[/ end=/]/ contains=@typescriptValue,typescriptCastKeyword nextgroup=@typescriptSymbols,typescriptDotNotation,typescriptFuncCallArg skipwhite skipempty', \ 'typescriptCall matchgroup=typescriptParens start=/(/ end=/)/ contains=typescriptDecorator,@typescriptParameterList,@typescriptComments nextgroup=typescriptTypeAnnotation,typescriptBlock skipwhite skipnl', \ 'typescriptTupleType matchgroup=typescriptBraces start=/\[/ end=/\]/ contains=@typescriptType,@typescriptComments,typescriptRestOrSpread,typescriptTupleLable skipwhite', \ 'typescriptParenthesizedType matchgroup=typescriptParens start=/(/ end=/)/ contains=@typescriptType nextgroup=@typescriptTypeOperator skipwhite skipempty fold', \ 'typescriptFuncType matchgroup=typescriptParens start=/($\k\+:\|)$\@=/ end=/)\s*=>/me=e-2 contains=@typescriptParameterList nextgroup=typescriptFuncTypeArrow skipwhite skipnl oneline', \ 'typescriptStringLiteralType start=/\z(["'']\)/ skip=/\\\\\|\\\z1\|\\\n/ end=/\z1\|$/ nextgroup=typescriptUnion skipwhite skipempty', \ 'typescriptTemplateLiteralType start=/`/ skip=/\\\\\|\\`\|\n/ end=/`\|$/ contains=typescriptTemplateSubstitutionType nextgroup=typescriptTypeOperator skipwhite skipempty', \ ] silent! exe 'syn clear ' . matchstr(s:def, '^\S\+') exe 'syn region ' . s:def . ' contained extend' endfor unlet s:def " yats' own arrow-function definitions, restated to stay last-defined at " a "(": params eaten as a parenthesized expression turn the arrow's "{" " body into an object literal, whose ternary region has no closing bound: " f((x) => { value = x ?? other; }) syntax match typescriptArrowFuncDef contained /\K\k*\s*=>/ \ contains=typescriptArrowFuncArg,typescriptArrowFunc \ nextgroup=@typescriptExpression,typescriptBlock \ skipwhite skipempty syntax match typescriptArrowFuncDef contained /(\%(\_[^()]\+\|(\_[^()]*)\)*)\_s*=>/ \ contains=typescriptArrowFuncArg,typescriptArrowFunc,@typescriptCallSignature \ nextgroup=@typescriptExpression,typescriptBlock \ skipwhite skipempty syntax region typescriptArrowFuncDef contained start=/(\%(\_[^()]\+\|(\_[^()]*)\)*):/ matchgroup=typescriptArrowFunc end=/=>/ \ contains=typescriptArrowFuncArg,typescriptTypeAnnotation,@typescriptCallSignature \ nextgroup=@typescriptExpression,typescriptBlock \ skipwhite skipempty keepend " The bracket pairs keep an outer region open across nested delimiters " and shield the spaces inside groupings from value termination: " a={ b: { c: 1 } } d=2 " markoTSDelim is deliberately unlinked: delimiters render plain. syn cluster markoExpr contains=@markoTS,markoTSBraces,markoTSParens,markoTSBrackets for [s:pair, s:open, s:close] in [["Braces", '{', '}'], ["Parens", '(', ')'], ["Brackets", '\[', ']']] exe 'syn region markoTS' . s:pair . ' contained transparent matchgroup=markoTSDelim' \ . ' start="' . s:open . '" end="' . s:close . '"' \ . ' contains=@markoExpr extend' endfor unlet s:pair s:open s:close " html-mode "//" and "/* */" comments open wherever whitespace precedes " the slash (a URL's "//" follows ":", so it stays plain); concise context " takes only the line-anchored forms, defined second so they win at a line " start and keep their fold and indent handling: " // note

done // for now

plain " No comment item may take "display": a match skipped during offscreen " state computation exposes its text, and a " syn region markoDeclaration start="" syn region markoDeclaration start="" syn region markoCData start="" " Placeholders interpolate into text; backslashes escape pairwise: " ${user.name} $!{rawHtml} \${literal} \\${live} " markoEscape must never take "display" (it exists to suppress " markoPlaceholder); it consumes an escaped "$", or stops before a "${" " an even backslash run leaves live. syn match markoEscape "\%(\\\\\)*\%(\\\$!\={\|\\\\\ze\$!\={\)" syn region markoPlaceholder matchgroup=markoPlaceholderDelim \ start="\$!\={" end="}" \ contains=@markoExpr extend " The no-"extend" variant for keepend parsed-text bodies and the CSS " contexts: an unterminated "\${" must stop at the container's close. syn region markoPlaceholderText contained matchgroup=markoPlaceholderDelim \ start="\$!\={" end="}" \ contains=@markoExpr \ containedin=cssDefinition,cssAttrRegion,cssStringQ,cssStringQQ syn match markoEntity "&\%(#\d\+\|#[xX]\x\+\|\w\+\);" display " Scriptlets; the whitespace after "$" keeps line-start placeholders out. " No keepend: an open bracket continues, as the parser's group tracking " does. The "$ {" block form is second, so it wins where both start: " $ count += 1 $ { let total = 0; } " $ const rows = [ " "a", " ] syn region markoScriptlet matchgroup=markoScriptletDelim \ start="^\s*\$\s\+" end="$" \ contains=@markoExpr syn region markoScriptlet matchgroup=markoScriptletDelim \ start="^\s*\$\s\+{" end="};\=" \ contains=@markoExpr " "--" marks the rest of the line as text; at end of line it opens an " indented block instead: " p -- some text " p -- " A block of text, html mode. " The inline form is a one-line html region, so later dash runs on the " line sit inside it and are never delimiters (the parser's rule), and " keepend bounds what the line opens. Both forms stand down on a line " whose first non-blank is "<" (html content, where dashes are text). " They overlap at a trailing "--": the nextgroup form is second and wins, " and must not take "display". A bare "--" line belongs to the " later-defined markoTextDelimBlock. syn region markoInlineText oneline keepend matchgroup=markoBlockDelim \ start="\%#=1\%(^\s*<.\{-}\)\@200 " An unquoted value ends at whitespace or the mode's terminators, except " that the parser continues across whitespace flanked by an operator: " if=tag === "select" content=a.desc ?? b.desc onClick=(e) => go(e) syn match markoAttrName contained "\%#=1\%(\$!\={\)\@![[:alnum:]_$@]\%(\k\|[$.]\|:=\@!\)*" display syn match markoSpread contained "\.\.\." display syn region markoString contained start=+\z(["']\)+ skip=+\\\z1+ end=+\z1+ contains=@Spell " Regions so an interpolation can sit inside one (no keepend: the " placeholder carries the region past its "}"): "

syn region markoShorthandId contained oneline \ start="#[-[:alnum:]_$]\@=" end="[-[:alnum:]_$]\@!" \ contains=markoPlaceholder syn region markoShorthandClass contained oneline \ start="\.[-[:alnum:]_$]\@=" end="[-[:alnum:]_$]\@!" \ contains=markoPlaceholder " Tag variables, arguments, |parameters|, and method bodies: " " >