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{{ define "main" -}}
{{ $emoji := cond (.Page.Params.showlinkemoji | default true) (emojify ":link: ") "" -}}
=> {{ .Site.Home.RelPermalink | replaceRE `(?m)index.gmi$` "" }} {{ emojify ":link:" | safeHTML }} {{ i18n "returnHome" -}}
{{ if (.Page.Params.pageinfo | default true) }}
{{ partial "pageinfo.gmi" . -}}
{{ end }}
# {{ .Name | safeHTML }}
{{ $content := chomp (.RawContent) -}}
{{ $scratch := newScratch -}}
{{/* if content begins with a heading, add an extra space */ -}}
{{ if (findRE `(?)^#{1,3}` $content) }}
{{ end -}}
{{/* split text into chunks, with each chunk containing 3 parts: above, within, and below preformatted text */ -}}
{{/* the regex matching below the preformatted text matches exactly once in the entire text */ -}}
{{ $chunks := findRESubmatch `(?sm)(?:(.+?)(^\x60{3}[^\x60].*?^\x60{3}$))|(.+$)` $content -}}
{{ $ref_index := 0 -}}
{{ range $chunks -}}
{{ $above_pre := index . 1 -}}
{{ $pre := index . 2 -}}
{{ $below_pre := index . 3 -}}
{{/* mux regex matches above and below preformatted text for rendering (the matches are mutually exclusive) */ -}}
{{ $rendered_text := print $above_pre $below_pre -}}
{{ if ($.Page.Params.makerefs | default true) -}}
{{/* find all the links within a chunk */ -}}
{{ $chunk_refs := findRESubmatch `!?\[\s*(.+?)\s*\]\(\s*(.+?)(?:\s+"(.+?)")?\s*\)` $rendered_text -}}
{{ $scratch.Add "refs" $chunk_refs -}}
{{ range $chunk_refs -}}
{{ $ref_index = add $ref_index 1 -}}
{{ $ref_text := index . 1 -}}
{{/* create superscript of $ref_index */ -}}
{{ $ref_index := replace $ref_index "0" "⁰" -}}
{{ $ref_index = replace $ref_index "1" "¹" -}}
{{ $ref_index = replace $ref_index "2" "²" -}}
{{ $ref_index = replace $ref_index "3" "³" -}}
{{ $ref_index = replace $ref_index "4" "⁴" -}}
{{ $ref_index = replace $ref_index "5" "⁵" -}}
{{ $ref_index = replace $ref_index "6" "⁶" -}}
{{ $ref_index = replace $ref_index "7" "⁷" -}}
{{ $ref_index = replace $ref_index "8" "⁸" -}}
{{ $ref_index = replace $ref_index "9" "⁹" -}}
{{/* replace Markdown links with link text and their superscripted reference numbers */ -}}
{{ $rendered_text = replace $rendered_text (index . 0) (print $ref_text $ref_index) 1 -}}
{{ end -}}
{{ else -}}
{{/* render all links directly */ -}}
{{ $rendered_text = $rendered_text | replaceRE `(?m)^!?\[\s*(.+?)\s*\]\(\s*(.+?)(?:\s+"(.+?)")?\s*\)$` (print "=> $2 " $emoji "$1") -}}
{{ end -}}
{{/* trim extra heading symbols */ -}}
{{ $rendered_text = $rendered_text | replaceRE `(?m)^####{1,3}` "###" -}}
{{/* convert alternative heading syntax to number signs */ -}}
{{ $rendered_text = $rendered_text | replaceRE `(?m)^[\t ]*(\S.+?)[\t ]*\n\=+$` "# $1" -}}
{{ $rendered_text = $rendered_text | replaceRE `(?m)^[\t ]*(\S.+?)[\t ]*\n\-+$` "## $1" -}}
{{/* remove bold and italics asterisk symbols */ -}}
{{ $rendered_text = $rendered_text | replaceRE `\*{3}(\S|\S.*?\S)\*{3}` "$1" -}}
{{ $rendered_text = $rendered_text | replaceRE `\*{2}(\S|\S.*?\S)\*{2}` "$1" -}}
{{ $rendered_text = $rendered_text | replaceRE `\*{1}(\S|\S.*?\S)\*{1}` "$1" -}}
{{/* convert alternative unordered lists symbols to asterisks */ -}}
{{ $rendered_text = $rendered_text | replaceRE `(?m)^[-+] ` "* " -}}
{{/* convert Markdown ordered list item to gemtext unordered list item */ -}}
{{ $rendered_text = $rendered_text | replaceRE `(?m)^[1-9]\d*\.[\t ]+(.*?)[\t ]*$` "* $1" -}}
{{ $rendered_text = $rendered_text | emojify -}}
{{/* demux regex matches above and below preformatted text */ -}}
{{ if $above_pre -}}
{{ $rendered_text | safeHTML -}}
{{ $pre | safeHTML -}}
{{ else -}}
{{ $pre | safeHTML -}}
{{ $rendered_text | safeHTML -}}
{{ end -}}
{{ end -}}
{{ $refs := $scratch.Get "refs" -}}
{{ if and (.Page.Params.makerefs | default true) $refs -}}
{{ $ref_index := 0 }}
## {{ i18n "refs" }}
{{ range $refs -}}
{{ $ref_index = add $ref_index 1 -}}
{{ $ref_text := index . 1 -}}
{{ $ref_link := index . 2 -}}
{{ $ref_title := index . 3 -}}
{{/* render referenced links */}}
{{ print "=> " $ref_link (emojify " :link: [") $ref_index "]: " (cond (ne (len $ref_title) 0) $ref_title $ref_text) | safeHTML -}}
{{ end -}}
{{ end -}}
{{ end }}
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