From: Paul Hänsch <paul@plutz.net>
Date: Wed, 11 Oct 2023 21:06:04 +0000 (+0200)
Subject: Merge commit '7641c53b7babc7f14976319b835c4d7f82e1ecb7'
X-Git-Url: http://git.plutz.net/?a=commitdiff_plain;h=c2ba4d6a5abd3d50bbb09d44b66b45369395af9c;hp=bb0790fd8ce109fe17a081f6fb61f4a86d96b1ad;p=serve0

Merge commit '7641c53b7babc7f14976319b835c4d7f82e1ecb7'
---

diff --git a/cgilite/cgilite.sh b/cgilite/cgilite.sh
index b51ee8e..b2467c3 100755
--- a/cgilite/cgilite.sh
+++ b/cgilite/cgilite.sh
@@ -1,22 +1,21 @@
 #!/bin/sh
 
-# Copyright 2017 - 2021 Paul Hänsch
-#
 # This is CGIlite.
 # A collection of posix shell functions for writing CGI scripts.
+
+# Copyright 2017 - 2023 Paul Hänsch
 # 
-# CGIlite is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-# 
-# CGIlite is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
 # 
-# You should have received a copy of the GNU Affero General Public License
-# along with CGIlite.  If not, see <http://www.gnu.org/licenses/>. 
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 [ -n "$include_cgilite" ] && return 0
 # guard set after webserver part
@@ -85,8 +84,14 @@ HEX_DECODE(){
   # will be copied to the output literally
 
   while [ "$in" ]; do
+    [ "$pfx" ] || case $in in
+      [0-9a-fA-F][0-9a-fA-F]*):;;
+      ?*) out="${out}${in%%"${in#?}"}"
+          in="${in#?}"; continue;;
+    esac
+
     case $in in
-      "$pfx"[0-9a-fA-F][0-9a-fA-F]*) in="${in#${pfx}}";;
+      "$pfx"[0-9a-fA-F][0-9a-fA-F]*) in="${in#"${pfx}"}";;
       \\*) in="${in#?}"; out="${out}\\\\"; continue;;
        %*) in="${in#?}"; out="${out}%%";  continue;;
         *) att="${in%%"${pfx}"*}"; att="${att%%%*}"; att="${att%%\\*}"
@@ -307,6 +312,7 @@ URL(){
     \&*) out="${out}%26"; str="${str#?}";;
     \"*) out="${out}%22"; str="${str#?}";;
     \'*) out="${out}%27"; str="${str#?}";;
+    \`*) out="${out}%60"; str="${str#?}";;
     \?*) out="${out}%3F"; str="${str#?}";;
     \#*) out="${out}%23"; str="${str#?}";;
     \[*) out="${out}%5B"; str="${str#?}";;
diff --git a/cgilite/common.css b/cgilite/common.css
index 65c28f3..dbaafd1 100644
--- a/cgilite/common.css
+++ b/cgilite/common.css
@@ -47,8 +47,19 @@ b, strong { font-weight: bolder; }
 tt, code, var, samp, kbd { font-family: monospace; }
 kbd { font-style: italic; }
 
-ul, ol { margin-left: 1.125em; }
+blockquote {
+  background-color: #EEE;
+  margin: .5em 0;
+  padding: 1em 2em;
+  white-space: pre-line;
+}
+
+ul, ol { padding-left: 1.5em; }
 dl dt { font-weight: bolder; }
+dl dd {
+  margin: 0 2em;
+  background-color: #EEE;
+}
 table th { font-weight: bold; }
 
 li p + ul, li p + ol {
@@ -68,7 +79,10 @@ h4, h5, h6, form legend {
   margin-bottom: .25em;
 }
 
-h1 { font-size: 1.5em; }
+h1 {
+  text-align: center;
+  font-size: 1.5em;
+}
 h2 { font-size: 1.125em; }
 
 select, input, button, textarea, a.button {
@@ -101,6 +115,7 @@ input + label {
   margin-left: .375em;
 }
 
+input[type="search"] + button.search,
 input.search + button.search {
   width: 2.5em;
   color: transparent;
@@ -109,7 +124,9 @@ input.search + button.search {
   border-left: none;
   border-radius: 0 2pt 2pt 0;
   white-space: nowrap;
+  overflow: hidden;
 }
+input[type="search"] + button.search:before,
 input.search + button.search:before {
   content: '\1f50d';
   color: #000;
@@ -119,8 +136,6 @@ input.search + button.search:before {
 @media print {
   @page { margin: 20mm; }
 
-  h1 { text-align: center; }
-
   h1, h2, h3, h4, h5, h6, form legend {
     page-break-inside: avoid;
     page-break-after: avoid;
@@ -168,4 +183,8 @@ input[type=radio].tab ~ *.tab {
   box-shadow: .125em .125em .125em #888;
 }
 
+/* Markdown line-block */
+.line-block { white-space: pre-wrap; }
+.line-block br { display: none; }
+
 /* ======= End Common Styles ======= */
diff --git a/cgilite/file.sh b/cgilite/file.sh
index 0d1f4ea..20990d3 100755
--- a/cgilite/file.sh
+++ b/cgilite/file.sh
@@ -1,21 +1,18 @@
 #!/bin/sh
 
-# Copyright 2016 - 2019 Paul Hänsch
-#
-# This file is part of cgilite.
+# Copyright 2016 - 2023 Paul Hänsch
 # 
-# cgilite is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
 # 
-# cgilite is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-# 
-# You should have received a copy of the GNU Affero General Public License
-# along with cgilite.  If not, see <http://www.gnu.org/licenses/>. 
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 [ -n "$include_fileserve" ] && return 0
 include_fileserve="$0"
@@ -48,24 +45,32 @@ file_type(){
 }
 
 FILE(){
-  local file file_size file_date http_date cachedate range mime
-  file="$1" mime="$2"
+  local file="$1" mime="$2"
+  local file_size file_date http_date cachedate range
 
   if ! [ -f "$file" ]; then
     printf 'Content-Length: 0\r\nStatus: 404 Not Found\r\n\r\n'
-    exit 0
+    return 0
   elif ! [ -r "$file" ]; then
     printf 'Content-Length: 0\r\nStatus: 403 Forbidden\r\n\r\n'
-    exit 0
+    return 0
   fi
 
-  file_size="$(stat -Lc %s "$file")"
-  file_date="$(stat -Lc %Y "$file")"
+  read file_size file_date <<-EOF
+	$(stat -Lc "%s	%Y" "$file")
+	EOF
   http_date="$(date -ud "@$file_date" +"%a, %d %b %Y %T GMT")"
+
+  [ ! "$HTTP_IF_MODIFIED_SINCE" -a "$cgilite_headers" ] \
+  &&    HTTP_IF_MODIFIED_SINCE="$(HEADER If-Modified-Since)"
+  [ ! "$HTTP_RANGE"             -a "$cgilite_headers" ] \
+  &&    HTTP_RANGE="$(HEADER Range)"
+
   cachedate="$(
     # Parse the allowable date formats from Section 3.3.1 of
     # https://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html
-    HEADER If-Modified-Since \
+    # HEADER If-Modified-Since \
+    printf %s "$HTTP_IF_MODIFIED_SINCE" \
     | sed -E 's;^[^ ]+, ([0-9]{2}) (...) ([0-9]{4}) (..:..:..) GMT$;\3-\2-\1 \4;;
               s;^[^ ]+, ([0-9]{2})-(...)-([789][0-9]) (..:..:..) GMT$;19\3-\2-\1 \4;;
               s;^[^ ]+, ([0-9]{2})-(...)-([0-6][0-9]) (..:..:..) GMT$;20\3-\2-\1 \4;;
@@ -76,14 +81,25 @@ FILE(){
     | xargs -r0 date +%s -ud 2>&-
   )"
 
-  range="$(HEADER Range |sed -nE 's;^bytes=([0-9]+-[0-9]*|-[0-9]+)$;\1;p;q;')"
+  range="${HTTP_RANGE#bytes=}"
   case "$range" in
-    *-) range="${range}$((file_size - 1))";;
-    -*) [ ${range#-} -le $file_size ] \
-        && range="$((file_size - ${range#-}))-$((file_size - 1))" \
-        || range="0-$((file_size - 1))";;
-    *-*) [ ${range#*-} -ge $file_size ] \
-         && range="${range%-*}-$((file_size - 1))";;
+    *[^0-9]*-*|*-*[^0-9]*)
+      range=""
+      ;;
+    *-)
+      range="${range}$((file_size - 1))"
+      ;;
+    -*)
+      [ ${range#-} -le $file_size ] \
+      && range="$((file_size - ${range#-}))-$((file_size - 1))" \
+      || range="0-$((file_size - 1))"
+      ;;
+    *-*)
+      [ ${range#*-} -ge $file_size ] \
+      && range="${range%-*}-$((file_size - 1))"
+      ;;
+    *) range=""
+      ;;
   esac
 
   if [ "$file_date" -lt "$cachedate" ] 2>&-; then
diff --git a/cgilite/html-sh.sed b/cgilite/html-sh.sed
index 8d7b61c..1a0f2b4 100755
--- a/cgilite/html-sh.sed
+++ b/cgilite/html-sh.sed
@@ -1,5 +1,19 @@
 #!/bin/sed -nEf
 
+# Copyright 2018 - 2019 Paul Hänsch
+# 
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+# 
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
 :Escapes
 s,\\\\,\&#92;,g; s,\\&,\&amp;,g;
 s,\\<,\&lt;,g; s,\\>,\&gt;,g;
diff --git a/cgilite/markdown.awk b/cgilite/markdown.awk
index 44d4e0d..7e29c57 100755
--- a/cgilite/markdown.awk
+++ b/cgilite/markdown.awk
@@ -5,6 +5,20 @@
 # Meant to support all features of John Grubers basic Markdown
 # + a number of common extensions, mostly inspired by Pandoc Markdown
 
+# Copyright 2021 - 2023 Paul Hänsch
+# 
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+# 
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
 # Supported Features / TODO:
 # ==========================
 # [x] done    [ ] todo    [-] not planned    ? unsure
@@ -38,18 +52,24 @@
 #
 # Extensions - Block elements:
 # ----------------------------
+# - [x] Automatic <section>-wrapping (custom)
 # -  ?  Heading identifiers (php md, pandoc)
+#   - [x] Heading attributes (custom)
+#   - [ ] <hr> terminates section
 # - [x] Automatic heading identifiers (custom)
 # - [x] Fenced code blocks (php md, pandoc)
 #   - [x] Fenced code attributes
+# - [x] Images (as block elements, <figure>-wrapped) (custom)
+#   - [x] reference style block images
 # - [/] Tables
 #   -  ?  Simple table (pandoc)
 #   -  ?  Multiline table (pandoc)
 #   - [x] Grid table (pandoc)
-#   - [x] Pipe table (php md pandoc)
+#     - [x] Headerless
+#   - [x] Pipe table (php md, pandoc)
 # - [x] Line blocks (pandoc)
 # - [x] Task lists (pandoc, custom)
-# - [ ] Definition lists (php md, pandoc)
+# - [x] Definition lists (php md, pandoc)
 # - [-] Numbered example lists (pandoc)
 # - [-] Metadata blocks (pandoc)
 # - [x] Metadata blocks (custom)
@@ -62,7 +82,7 @@
 # - [x] ^Superscript^ ~Subscript~ (pandoc)
 # - [-] Bracketed spans (pandoc)
 #   - [-] Inline attributes (pandoc)
-# - [x] Image attributes (custom, pandoc inspired, inline only)
+# - [x] Image attributes (custom, pandoc inspired, not for reference style)
 # - [x] Wiki style links [[PageName]] / [[PageName|Link Text]]
 # - [-] TEX-Math (pandoc)
 # -  ?  Footnotes (php md)
@@ -72,7 +92,7 @@
 # -  ?  ... three-dot ellipsis (smartypants)
 # - [-] en-dash (smartypants)
 # - [ ] Automatic em-dash / en-dash
-# - [ ] Automatic -> Arrows <-
+# - [x] Automatic -> Arrows <- (custom)
 
 function debug(text) { printf "\n---\n%s\n---\n", text > "/dev/stderr"; }
 
@@ -86,24 +106,32 @@ function HTML ( text ) {
   return text;
 }
 
-function inline( line, LOCAL, len, code, href, guard ) {
-  nu = "(\\\\\\\\|\\\\[^\\\\]|[^\\\\_]|_[[:alnum:]])*"    # not underline (except when escaped)
-  na = "(\\\\\\\\|\\\\[^\\\\]|[^\\\\\\*])*"  # not asterisk (except when escaped)
-  ieu =  "_([^_[:space:]]|[^_[:space:]]" nu "[^_[:space:]])_"                 # inner <em> (underline)
-  isu = "__([^_[:space:]]|[^_[:space:]]" nu "[^_[:space:]])__"                # inner <strong> (underline)
-  iea =    "\\*([^\\*[:space:]]|[^\\*[:space:]]" na "[^\\*[:space:]])\\*"     # inner <em> (asterisk)
-  isa = "\\*\\*([^\\*[:space:]]|[^\\*[:space:]]" na "[^\\*[:space:]])\\*\\*"  # inner <strong> (asterisk)
+function URL ( text, sharp ) {
+  gsub( /&/,  "%26",  text );
+  gsub( /"/,  "%22", text );
+  gsub( /'/,  "%27", text );
+  gsub( /`/,  "%60", text );
+  gsub( /\?/,  "%3F", text );
+  if (sharp) gsub( /#/,  "%23", text );
+  gsub( /\[/,  "%5B", text );
+  gsub( /\]/,  "%5D", text );
+  gsub( / /,  "%20", text );
+  gsub( /	/,  "%09", text );
+  gsub( /\\/, "%5C", text );
+  return text;
+}
 
+function inline( line, LOCAL, len, text, code, href, guard ) {
   if ( line ~ /^$/ ) {  # Recursion End
     return "";
 
-  #  omit processing of escaped characters
-  } else if ( line ~ /^\\[]\\`\*_\{\}\(\)#\+-\.![]/) {
-    return substr(line, 2, 1) inline( substr(line, 3) );
+  # omit processing of escaped characters
+  } else if ( line ~ /^\\./) {
+    return HTML(substr(line, 2, 1)) inline( substr(line, 3) );
 
   # hard brakes
   } else if ( match(line, /^  \n/) ) {
-    return "<br />\n" inline( substr(line, RLENGTH + 1) );
+    return "<br>\n" inline( substr(line, RLENGTH + 1) );
 
   #  ``code spans``
   } else if ( match( line, /^`+/) ) {
@@ -113,43 +141,59 @@ function inline( line, LOCAL, len, code, href, guard ) {
       code = substr( line, len + 1, match( substr(line, len + 1), guard ) - 1)
       len = 2 * length(guard) + length(code)
       #  strip single surrounding white spaces
-      code = gensub( / (.*) /, "\\1", "1" , code)
+      gsub( /^ | $/, "", code)
       #  escape HTML within code span
       gsub( /&/, "\\&amp;", code ); gsub( /</, "\\&lt;", code ); gsub( />/, "\\&gt;", code );
       return "<code>" code "</code>" inline( substr( line, len + 1 ) )
     }
 
+  # Macros
+  } else if ( match( line, /^<<([^>]|>[^>])+>>/ ) ) {
+    len = RLENGTH;
+    return "<code class=\"macro\">" HTML( substr( line, 3, len - 4 ) ) "</code>" inline(substr(line, len + 1));
+
   # Wiki style links
-  } else if ( match( line, /^\[\[([^\]\|]+)(\|([^\]]+))?\]\]/) ) {
+  } else if ( match( line, /^\[\[([^]|]+)(\|[^]]+)?\]\]/) ) {
     len = RLENGTH;
-    href = gensub(/^\[\[([^\]\|]+)(\|([^\]]+))?\]\]/, "\\1", 1, substr(line, 1, len) );
-    text = gensub(/^\[\[([^\]\|]+)(\|([^\]]+))?\]\]/, "\\3", 1, substr(line, 1, len) );
+    href = gensub(/^\[\[([^]|]+)(\|([^]]+))?\]\]/, "\\1", 1, substr(line, 1, len) );
+    text = gensub(/^\[\[([^]|]+)(\|([^]]+))?\]\]/, "\\3", 1, substr(line, 1, len) );
     if ( ! text ) text = href;
-    return "<a href=\"" HTML(href) "\">" HTML(text) "</a>" inline( substr( line, len + 1) );
+    return "<a href=\"" URL(href) "\">" HTML(text) "</a>" inline( substr( line, len + 1) );
 
   #  quick links ("automatic links" in md doc)
   } else if ( match( line, /^<[a-zA-Z]+:\/\/([-\.[:alnum:]]+)(:[0-9]*)?(\/[^>]*)?>/ ) ) {
     len = RLENGTH;
-    href = HTML( substr( line, 2, len - 2) );
+    href = URL( substr( line, 2, len - 2) );
     return "<a href=\"" href "\">" href "</a>" inline( substr( line, len + 1) );
 
   # quick link email
   } else if ( match( line, /^<[a-zA-Z0-9.!#$%&'\''*+\/=?^_`{|}~-]+@[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(\.[a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*>/ ) ) {
     len = RLENGTH;
-    href = HTML( substr( line, 2, len - 2) );
+    href = URL( substr( line, 2, len - 2) );
     return "<a href=\"mailto:" href "\">" href "</a>" inline( substr( line, len + 1) );
 
+  # Verbatim inline HTML
+  } else if ( AllowHTML && match( line, /^(<!--([^-]|-[^-]|--[^>])*-->|<\?([^\?]|\?[^>])*\?>|<![A-Z][^>]*>|<!\[CDATA\[([^\]]|\][^\]]|\]\][^>])*\]\]>|<\/[A-Za-z][A-Za-z0-9-]*[[:space:]]*>|<[A-Za-z][A-Za-z0-9-]*([[:space:]]+[A-Za-z_:][A-Za-z0-9_\.:-]*([[:space:]]*=[[:space:]]*([[:space:]"'=<>`]+|"[^"]*"|'[^']*'))?)*[[:space:]]*\/?>)/) ) {
+    len = RLENGTH;
+    return substr( line, 1, len) inline(substr(line, len + 1));
+
   # inline links
-  } else if ( match(line, /^\[([^]]+)\]\(([^"\)]+)([[:space:]]+"([^"]+)")?\)/) ) {
+  } else if ( match(line, "^" lii "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)") ) {
     len = RLENGTH;
-    text  = gensub(/^\[([^]]+)\]\(([^"\)]+)([[:space:]]+"([^"]+)")?\)/, "\\1", 1, substr(line, 1, len) );
-    href  = gensub(/^\[([^]]+)\]\(([^"\)]+)([[:space:]]+"([^"]+)")?\)/, "\\2", 1, substr(line, 1, len) );
-    title = gensub(/^\[([^]]+)\]\(([^"\)]+)([[:space:]]+"([^"]+)")?\)/, "\\4", 1, substr(line, 1, len) );
-    if ( title ) {
-      return "<a href=\"" HTML(href) "\" title=\"" HTML(title) "\">" inline( text ) "</a>" inline( substr( line, len + 1) );
-    } else {
-      return "<a href=\"" HTML(href) "\">" inline( text ) "</a>" inline( substr( line, len + 1) );
-    }
+    text = href = title = substr( line, 1, len);
+    sub("^\\[", "", text); sub("\\]\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)$", "", text);
+    sub("^" lii "\\([\n\t ]*", "", href); sub("([\n\t ]+" lit ")?[\n\t ]*\\)$", "", href);
+    sub("^" lii "\\([\n\t ]*" lid, "", title); sub("[\n\t ]*\\)$", "", title); sub("^[\n\t ]+", "", title);
+
+    if ( match(href, /^<.*>$/) ) { sub(/^</, "", href); sub(/>$/, "", href); }
+         if ( match(title, /^".*"$/) ) { sub(/^"/, "", title); sub(/"$/, "", title); }
+    else if ( match(title, /^'.*'$/) ) { sub(/^'/, "", title); sub(/'$/, "", title); }
+    else if ( match(title, /^\(.*\)$/) ) { sub(/^\(/, "", title); sub(/\)$/, "", title); }
+
+    gsub(/\\/, "", href); gsub(/\\/, "", title); gsub(/[\n\t]+/, " ", title);
+
+    return "<a href=\"" URL(href) "\"" (title?" title=\"" HTML(title) "\"":"") ">" \
+           inline( text ) "</a>" inline( substr( line, len + 1) );
 
   # reference style links
   } else if ( match(line, /^\[([^]]+)\] ?\[([^]]*)\]/ ) ) {
@@ -158,40 +202,54 @@ function inline( line, LOCAL, len, code, href, guard ) {
       id = gensub(/^\[([^\n]+)\] ?\[([^\n]*)\].*/, "\\2", 1, substr(line, 1, len) );
     if ( ! id ) id = text;
     if ( rl_href[id] && rl_title[id] ) {
-      return "<a href=\"" HTML(rl_href[id]) "\" title=\"" HTML(rl_title[id]) "\">" inline(text) "</a>" inline( substr( line, len + 1) );
+      return "<a href=\"" URL(rl_href[id]) "\" title=\"" HTML(rl_title[id]) "\">" inline(text) "</a>" inline( substr( line, len + 1) );
     } else if ( rl_href[id] ) {
-      return "<a href=\"" HTML(rl_href[id]) "\">" inline(text) "</a>" inline( substr( line, len + 1) );
+      return "<a href=\"" URL(rl_href[id]) "\">" inline(text) "</a>" inline( substr( line, len + 1) );
     } else {
       return "" HTML(substr(line, 1, len)) inline( substr(line, len + 1) );
     }
 
   # inline images
-  } else if ( match(line, /^!\[([^]]+)\]\(([^"\)]+)([ \t]+"([^"]+)")?\)(\{([a-zA-Z \t-]*)\})?/) ) {
-    len = RLENGTH;
-    text   = gensub(/^!\[([^]]+)\]\(([^"\)]+)([ \t]+"([^"]+)")?\)(\{([a-zA-Z \t-]*)\})?/, "\\1", "g", substr(line, 1, len) );
-    href   = gensub(/^!\[([^]]+)\]\(([^"\)]+)([ \t]+"([^"]+)")?\)(\{([a-zA-Z \t-]*)\})?/, "\\2", "g", substr(line, 1, len) );
-    title  = gensub(/^!\[([^]]+)\]\(([^"\)]+)([ \t]+"([^"]+)")?\)(\{([a-zA-Z \t-]*)\})?/, "\\4", "g", substr(line, 1, len) );
-    attrib = gensub(/^!\[([^]]+)\]\(([^"\)]+)([ \t]+"([^"]+)")?\)(\{([a-zA-Z \t-]*)\})?/, "\\6", "g", substr(line, 1, len) );
-    if ( title && attrib ) {
-      return "<img src=\"" HTML(href) "\" alt=\"" HTML(text) "\" title=\"" HTML(title) "\" class=\"" HTML(attrib) "\"/>" inline( substr( line, len + 1) );
-    } else if ( title ) {
-      return "<img src=\"" HTML(href) "\" alt=\"" HTML(text) "\" title=\"" HTML(title) "\" />" inline( substr( line, len + 1) );
-    } else if ( attrib ) {
-      return "<img src=\"" HTML(href) "\" alt=\"" HTML(text) "\" class=\"" HTML(attrib) "\" />" inline( substr( line, len + 1) );
-    } else {
-      return "<img src=\"" HTML(href) "\" alt=\"" HTML(text) "\" />" inline( substr( line, len + 1) );
-    }
+  } else if ( match(line, "^!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?") ) {
+    len = RLENGTH; text = href = title = attrib = substr( line, 1, len);
+
+    sub("^!\\[", "", text);
+    sub("\\]\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?$", "", text);
+
+    sub("^!" lix "\\([\n\t ]*", "", href);
+    sub("([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?$", "", href);
+
+    sub("^!" lix "\\([\n\t ]*" lid, "", title);
+    sub("[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?$", "", title);
+    sub("^[\n\t ]+", "", title);
+
+    sub("^!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)", "", attrib);
+    sub(/^\{[ \t]*/, "", attrib); sub(/[ \t]*\}$/, "", attrib); gsub(/[ \t]+/, " ", attrib);
+
+    if ( match(href, /^<.*>$/) ) { sub(/^</, "", href); sub(/>$/, "", href); }
+         if ( match(title, /^".*"$/) ) { sub(/^"/, "", title); sub(/"$/, "", title); }
+    else if ( match(title, /^'.*'$/) ) { sub(/^'/, "", title); sub(/'$/, "", title); }
+    else if ( match(title, /^\(.*\)$/) ) { sub(/^\(/, "", title); sub(/\)$/, "", title); }
+
+    gsub(/^[\t ]+$/, "", text); gsub(/\\/, "", href);
+    gsub(/\\/, "", title); gsub(/[\n\t]+/, " ", title);
+
+    return "<img src=\"" URL(href, 1) "\" alt=\"" HTML(text?text:title?title:href) "\"" \
+           (title?" title=\"" HTML(title) "\"":"") (attrib?" class=\"" HTML(attrib) "\"":"") \
+           ">" inline( substr( line, len + 1) );
 
   # reference style images
-  } else if ( match(line, /^!\[([^]]+)\] ?\[([^]]*)\]/ ) ) {
+  } else if ( match(line, /^!\[([^]]*)\] ?\[([^]]*)\]/ ) ) {
     len = RLENGTH;
-    text = gensub(/^!\[([^\n]+)\] ?\[([^\n]*)\].*/, "\\1", 1, substr(line, 1, len) );
-      id = gensub(/^!\[([^\n]+)\] ?\[([^\n]*)\].*/, "\\2", 1, substr(line, 1, len) );
+    text = gensub(/^!\[([^\n]*)\] ?\[([^\n]*)\].*/, "\\1", 1, substr(line, 1, len) );
+      id = gensub(/^!\[([^\n]*)\] ?\[([^\n]*)\].*/, "\\2", 1, substr(line, 1, len) );
     if ( ! id ) id = text;
     if ( rl_href[id] && rl_title[id] ) {
-      return "<img src=\"" HTML(rl_href[id]) "\" alt=\"" HTML(text) "\" title=\"" HTML(rl_title[id]) "\" />" inline( substr( line, len + 1) );
+      return "<img src=\"" URL(rl_href[id], 1) "\" alt=\"" HTML(text) "\" title=\"" HTML(rl_title[id]) "\">" \
+             inline( substr( line, len + 1) );
     } else if ( rl_href[id] ) {
-      return "<img src=\"" HTML(rl_href[id]) "\" alt=\"" HTML(text) "\" />" inline( substr( line, len + 1) );
+      return "<img src=\"" URL(rl_href[id], 1) "\" alt=\"" HTML(text) "\">" \
+             inline( substr( line, len + 1) );
     } else {
       return "" HTML(substr(line, 1, len)) inline( substr(line, len + 1) );
     }
@@ -245,21 +303,19 @@ function inline( line, LOCAL, len, code, href, guard ) {
     len = RLENGTH;
     return "<em>" inline( substr( line, 2, len - 2 ) ) "</em>" inline( substr( line, len + 1 ) );
 
-  # Macros
-  } else if ( AllowMacros && match( line, /^<<([^>]|>[^>])+>>/) ) {
-    len = RLENGTH;
-    return macro( substr( line, 3, len - 4 ) ) inline(substr(line, len + 1));
-
-  # Verbatim inline HTML
-  } else if ( AllowHTML && match( line, /^(<!--([^-]|-[^-]|--[^>])*-->|<\?([^\?]|\?[^>])*\?>|<![A-Z][^>]*>|<!\[CDATA\[([^\]]|\][^\]]|\]\][^>])*\]\]>|<\/[A-Za-z][A-Za-z0-9-]*[[:space:]]*>|<[A-Za-z][A-Za-z0-9-]*([[:space:]]+[A-Za-z_:][A-Za-z0-9_\.:-]*([[:space:]]*=[[:space:]]*([[:space:]"'=<>`]+|"[^"]*"|'[^']*'))?)*[[:space:]]*\/?>)/) ) {
-    len = RLENGTH;
-    return substr( line, 1, len) inline(substr(line, len + 1));
-
   # Literal HTML entities
   } else if ( match( line, /^&([a-zA-Z]{2,32}|#[0-9]{1,7}|#[xX][0-9a-fA-F]{1,6});/) ) {
     len = RLENGTH;
     return substr( line, 1, len ) inline(substr(line, len + 1));
 
+  # Arrows
+  } else if ( line ~ /^-->( |$)/) {  # ignore multidash-arrow
+    return "--&gt;" inline( substr(line, 4) );
+  } else if ( line ~ /^<-( |$)/) {
+    return "&larr;" inline( substr(line, 3) );
+  } else if ( line ~ /^->( |$)/) {
+    return "&rarr;" inline( substr(line, 3) );
+
   # Escape lone HTML character
   } else if ( match( line, /^[&<>"']/) ) {
     return HTML(substr(line, 1, 1)) inline(substr(line, 2));
@@ -270,8 +326,43 @@ function inline( line, LOCAL, len, code, href, guard ) {
   }
 }
 
-function _block( block, LOCAL, st, len, hlvl, htxt, guard, code, indent, attrib ) {
-  gsub( /^\n+|\n+$/, "", block );
+function headline( hlvl, htxt, attrib, LOCAL, sec, n, HL) {
+  match(hstack, /([0-9]+( [0-9]+){5})$/); split( substr(hstack, RSTART),  HL);
+
+  for ( n = hlvl; n <= 6; n++ ) { sec = sec (HL[n]?"</section>":""); }
+  HL[hlvl]++; for ( n = hlvl + 1; n <= 6; n++) { HL[n] = 0;}
+
+  hid = ""; for ( n = 2; n <= blvl; n++) { hid = hid BL[n] "/"; }
+  hid = hid HL[1]; for ( n = 2; n <= hlvl; n++) { hid = hid "." HL[n] ; }
+  hid = hid ":" URL(htxt, 1);
+
+  sub(/([0-9]+( [0-9]+){5})$/, "", hstack);
+  hstack = hstack HL[1] " " HL[2] " " HL[3] " " HL[4] " " HL[5] " " HL[6];
+
+  return sec "<section class=\"" (attrib ? "h" hlvl " " attrib : "h" hlvl)  "\" id=\"" hid "\">" \
+         "<h" hlvl (attrib ? " class=\"" attrib "\"" : "") ">" inline( htxt ) \
+         "<a class=\"anchor\" href=\"#" hid "\"></a>" \
+         "</h" hlvl ">\n";
+}
+
+# Nested Block, resets heading counters
+function _nblock( block, LOCAL, sec, n ) {
+  hstack = hstack " 0 0 0 0 0 0";
+
+  # Block Level
+  blvl++; BL[blvl]++;
+  for ( n = blvl + 1; n in BL; n++) { delete BL[n]; }
+
+  block = _block( block );
+  match(hstack, /([0-9]+( [0-9]+){5})$/); split( substr(hstack, RSTART),  HL);
+  sec = ""; for ( n = 1; n <= 6; n++ ) { sec = sec (HL[n]?"</section>":""); }
+
+  sub("( +[0-9]+){6} *$", "", hstack); blvl--;
+  return block sec;
+}
+
+function _block( block, LOCAL, st, len, text, title, attrib, href, guard, code, indent, list ) {
+  gsub( "(^\n+|\n+$)", "", block );
 
   if ( block == "" ) {
     return "";
@@ -308,12 +399,13 @@ function _block( block, LOCAL, st, len, hlvl, htxt, guard, code, indent, attrib
   } else if ( match( block, /^> /) ) {
     match( block, /(^|\n)[[:space:]]*(\n|$)/ ) || match(block, /$/);
     len = RLENGTH; st = RSTART;
-    return "<blockquote>\n" _block( gensub( /(^|\n)> /, "\n", "g", substr(block, 1, st - 1) ) ) "</blockquote>\n\n" \
-           _block( substr(block, st + len) );
+    text = substr(block, 1, st - 1); gsub( /(^|\n)> /, "\n", text );
+    text = _nblock( text ); gsub( /^\n|\n$/, "", text )
+    return "<blockquote>" text "</blockquote>\n\n" _block( substr(block, st + len) );
 
   # Pipe Tables (pandoc / php md / gfm )
   } else if ( match(block, "^((\\|)?([^\n]+\\|)+[^\n]+(\\|)?)\n" \
-                           "((\\|)?:?(-+:?[\\|+])+:?-+:?(\\|)?)\n" \
+                           "((\\|)?(:?-+:?[\\|+])+:?-+:?(\\|)?)\n" \
                            "((\\|)?([^\n]+\\|)+[^\n]+(\\|)?(\n|$))+" ) ) {
     len = RLENGTH; st = RSTART;
     #initialize empty arrays
@@ -359,46 +451,65 @@ function _block( block, LOCAL, st, len, hlvl, htxt, guard, code, indent, attrib
     return "<table>" ttext "</tbody></table>\n" _block(block);
 
   # Grid Tables (pandoc)
-  } else if ( match(block, "^\\+(-+\\+)+\n" \
-                       "(\\|([^\n]+\\|)+\n)+" \
-                        "\\+(:?=+:?\\+)+\n" \
-                      "((\\|([^\n]+\\|)+\n)+" \
-                            "\\+(-+\\+)+(\n|$))+" \
-            ) ) {
+  # (with, and without header)
+  } else if ( match( block, "^\\+(-+\\+)+\n" \
+                            "(\\|([^\n]+\\|)+\n)+" \
+                            "(\\+(:?=+:?\\+)+)\n" \
+                           "((\\|([^\n]+\\|)+\n)+" \
+                             "\\+(-+\\+)+(\n|$))+" \
+                   ) || \
+              match( block, "^()()()" \
+                            "(\\+(:?-+:?\\+)+)\n" \
+                           "((\\|([^\n]+\\|)+\n)+" \
+                             "\\+(-+\\+)+(\n|$))+" \
+  ) ) {
     len = RLENGTH; st = RSTART;
     #initialize empty arrays
     split("", talign); split("", tarray); split("", tread);
     cols = 0; cnt=0; ttext = "";
 
-    # table header and alignment
-    block = substr(block, match(block, /(\n|$)/) + 1 );
-    while ( match(block, "^\\|([^\n]+\\|)+\n") ) {
-      cols = split( gensub( /(^\||\|$)/, "", "g", \
-             gensub( /(^|[^\\])\\\|/, "\\1\\&#x7C;", "g", \
-             substr(block, 1, match(block, /(\n|$)/)) \
-      )), tread, /\|/);
-      block = substr(block, match(block, /(\n|$)/) + 1 );
-      for (cnt = 1; cnt < cols; cnt++)
-        tarray[cnt] = tarray[cnt] "\n" tread[cnt];
-    }
+    # Column Count
+    cols = split(   gensub( "^(\\+(:?-+:?\\+)+)(\n.*)*$", "\\1", 1, block), tread, /\+/) - 2;
+    # debug(" Cols: " gensub( "^(\\+(:?-+:?\\+)+)(\n.*)*$", "\\1", 1, block ));
 
-    cols = split( \
-           gensub( /(^\+|\+$)/, "", "g", \
-           substr(block, 1, match(block, /(\n|$)/)) \
-    ), talign, /\+/);
-    block = substr(block, match(block, /(\n|$)/) + 1 );
+    # table alignment
+    split( gensub( "^(.*\n)?\\+((:?=+:?\\+|(:-+|-+:|:-+:)\\+)+)(\n.*)$", "\\2", "g", block ), talign, /\+/ );
+    # debug("Align: " gensub( "^(.*\n)?\\+((:?=+:?\\+|(:-+|-+:|:-+:)\\+)+)(\n.*)$", "\\2", "g", block ));
 
-    for (cnt = 1; cnt < cols; cnt++) {
-           if (match(talign[cnt], /:=+:/)) talign[cnt]="center";
-      else if (match(talign[cnt],  /=+:/)) talign[cnt]="right";
-      else if (match(talign[cnt], /:=+/ )) talign[cnt]="left";
+    for (cnt = 1; cnt <= cols; cnt++) {
+           if (match(talign[cnt], /:(-+|=+):/)) talign[cnt]="center";
+      else if (match(talign[cnt],  /(-+|=+):/)) talign[cnt]="right";
+      else if (match(talign[cnt], /:(-+|=+)/ )) talign[cnt]="left";
       else talign[cnt]="";
     }
 
-    ttext = "<thead>\n<tr>"
-    for (cnt = 1; cnt < cols; cnt++)
-      ttext = ttext "<th align=\"" talign[cnt] "\">" _block(tarray[cnt]) "</th>"
-    ttext = ttext "</tr>\n</thead><tbody>\n"
+    if ( match(block, "^\\+(-+\\+)+\n" \
+                      "(\\|([^\n]+\\|)+\n)+" \
+                       "\\+(:?=+:?\\+)+\n" \
+                     "((\\|([^\n]+\\|)+\n)+" \
+                       "\\+(-+\\+)+(\n|$))+" \
+    ) ) {
+      # table header
+      block = substr(block, match(block, /(\n|$)/) + 1 );
+      while ( match(block, "^\\|([^\n]+\\|)+\n") ) {
+        split( gensub( /(^\||\|$)/, "", "g", \
+                 gensub( /(^|[^\\])\\\|/, "\\1\\&#x7C;", "g", \
+                   substr(block, 1, match(block, /(\n|$)/)) \
+        )), tread, /\|/);
+        block = substr(block, match(block, /(\n|$)/) + 1 );
+        for (cnt = 1; cnt <= cols; cnt++)
+          tarray[cnt] = tarray[cnt] "\n" tread[cnt];
+      }
+
+      ttext = "<thead>\n<tr>"
+      for (cnt = 1; cnt <= cols; cnt++)
+        ttext = ttext "<th align=\"" talign[cnt] "\">" _nblock(tarray[cnt]) "</th>"
+      ttext = ttext "</tr>\n</thead>"
+    }
+
+    # table body
+    block = substr(block, match(block, /(\n|$)/) + 1 );
+    ttext = ttext "<tbody>\n"
 
     while ( match(block, /^((\|([^\n]+\|)+\n)+\+(-+\+)+(\n|$))+/ ) ){
       split("", tarray);
@@ -408,27 +519,27 @@ function _block( block, LOCAL, st, len, hlvl, htxt, guard, code, indent, attrib
                substr(block, 1, match(block, /(\n|$)/)) \
         )), tread, /\|/);
         block = substr(block, match(block, /(\n|$)/) + 1 );
-        for (cnt = 1; cnt < cols; cnt++)
+        for (cnt = 1; cnt <= cols; cnt++)
           tarray[cnt] = tarray[cnt] "\n" tread[cnt];
       }
       block = substr(block, match(block, /(\n|$)/) + 1 );
 
       ttext = ttext "<tr>"
-      for (cnt = 1; cnt < cols; cnt++)
-        ttext = ttext "<td align=\"" talign[cnt] "\">" _block(tarray[cnt]) "</td>"
+      for (cnt = 1; cnt <= cols; cnt++)
+        ttext = ttext "<td align=\"" talign[cnt] "\">" _nblock(tarray[cnt]) "</td>"
       ttext = ttext "</tr>\n"
     }
-    return "<table>" ttext "</tbody></table>\n" _block(block);
+    return "<table>" ttext "</tbody></table>\n" _nblock(block);
 
   # Line Blocks (pandoc)
   } else if ( match(block, /^\| [^\n]*(\n|$)(\| [^\n]*(\n|$)|[ \t]+[^\n[:space:]][^\n]*(\n|$))*/) ) {
     len = RLENGTH; st = RSTART;
-    code = substr(block, 1, len);
-    gsub(/\n[[:space:]]+/, " ", code);
-    gsub(/\n\| /, "\n", code);
-    gsub(/^\| |\n$/, "", code);
-    return "<div class=\"line-block\">" gensub(/\n/, "<br />\n", "g", inline( code )) "</div>\n" \
-           _block( substr( block, len + 1) );
+
+    text = substr(block, 1, len); gsub(/\n[[:space:]]+/, " ", text);
+    gsub(/\n\| /, "\n", text); gsub(/^\| |\n$/, "", text);
+    text = inline(text); gsub(/\n/, "<br>\n", text);
+
+    return "<div class=\"line-block\">" text "</div>\n" _block( substr( block, len + 1) );
 
   # Indented Code Block
   } else if ( match(block, /^(    |\t)( *\t*[^ \t\n]+ *\t*)+(\n|$)((    |\t)[^\n]+(\n|$)|[ \t]*(\n|$))*/) ) {
@@ -442,13 +553,13 @@ function _block( block, LOCAL, st, len, hlvl, htxt, guard, code, indent, attrib
   # Fenced Divs (pandoc, custom)
   } else if ( match( block, /^(:::+)/ ) ) {
     guard = substr( block, 1, RLENGTH );
-    code = gensub(/^[^\n]+\n/, "", 1, block);
+    code = block; sub(/^[^\n]+\n/, "", code);
     attrib = gensub(/^:::+[ \t]*\{?[ \t]*([^\}\n]*)\}?[ \t]*\n.*$/, "\\1", 1, block);
     gsub(/[^a-zA-Z0-9_-]+/, " ", attrib);
     gsub(/(^ | $)/, "", attrib);
     if ( match(code, "(^|\n)" guard "+(\n|$)" ) ) {
       len = RLENGTH; st = RSTART;
-      return "<div class=\"" attrib "\">" _block( substr(code, 1, st - 1) ) "</div>\n" \
+      return "<div class=\"" attrib "\">" _nblock( substr(code, 1, st - 1) ) "</div>\n" \
              _block( substr( code, st + len ) );
     } else {
       match( block, /(^|\n)[[:space:]]*(\n|$)/ ) || match( block, /$/ );
@@ -475,60 +586,147 @@ function _block( block, LOCAL, st, len, hlvl, htxt, guard, code, indent, attrib
              _block( substr(block, st + len) );
     }
 
-  # Unordered list
-  } else if ( match( block, "^ ? ? ?[-+*][ \t]+[^\n]+(\n|$)" \
-                            "(([ \t]*\n)* ? ? ?[-+*][ \t]+[^\n]+(\n|$)" \
-                            "|([ \t]*\n)*( ? ? ?\t|  +)[^\n]+(\n|$)" \
-                            "|[^\n]+(\n|$))*" ) ) {
-  list = substr( block, 1, RLENGTH);
-  block = substr( block, RLENGTH + 1);
-  indent = length( gensub(/[-+*][ \t]+[^\n]+.*$/, "", 1, list) );
-
-  gsub("(^|\n) {0," indent "}", "\n", list);
-  return "\n<ul>\n" _list( substr(list, 2) ) "</ul>\n" _block( block );
-
-  # Ordered list
-  } else if ( match( block, "^ ? ? ?([0-9]+|#)\\.[ \t]+[^\n]+(\n|$)" \
-                            "(([ \t]*\n)* ? ? ?([0-9]+|#)\\.[ \t]+[^\n]+(\n|$)" \
-                            "|([ \t]*\n)*( ? ? ?\t|  +)[^\n]+(\n|$)" \
-                            "|[^\n]+(\n|$))*" ) ) {
-  list = substr( block, 1, RLENGTH);
-  block = substr( block, RLENGTH + 1);
-  indent = length( gensub(/([0-9]+|#)\.[ \t]+[^\n]+.*$/, "", 1, list) );
-
-  gsub("(^|\n) {0," indent "}", "\n", list);
-  return "\n<ol>\n" _list( substr(list, 2) ) "</ol>\n" _block( block );
-
-  # First Order Heading
-  } else if ( match( block, /^[^\n]+\n===+(\n|$)/ ) ) {
-    len = RLENGTH;
-    HL[1]++; HL[2] = 0; HL[3] = 0; HL[4] = 0; HL[5] = 0; HL[6] = 0;
-    return "<h1 id=\"" HL[1] " - " HTML(gensub( /\n.*$/, "", "g", block )) "\">" \
-           inline( gensub( /\n.*$/, "", "g", block ) ) \
-           "<a class=\"anchor\" href=\"#" HL[1] " - " \
-           HTML(gensub( /\n.*$/, "", "g", block )) "\"></a></h1>\n\n" \
-           _block( substr( block, len + 1 ) );
+  # First Order Heading H1 + Attrib
+  } else if ( match( block, /^([^\n]+)([ \t]*\{([^\}\n]+)\})\n===+(\n|$)/ ) ) {
+    len = RLENGTH; text = attrib = block;
+    sub(/([ \t]*\{([^\}\n]+)\})\n===+(\n.*)?$/, "", text);
+    sub(/\}\n===+(\n.*)?$/, "", attrib); sub(/^([^\n]+)[ \t]*\{/, "", attrib);
+    gsub(/[^a-zA-Z0-9_-]+/, " ", attrib); gsub(/(^ | $)/, "", attrib);
 
-  # Second Order Heading
-  } else if ( match( block, /^[^\n]+\n---+(\n|$)/ ) ) {
-    len = RLENGTH;
-    HL[2]++; HL[3] = 0; HL[4] = 0; HL[5] = 0; HL[6] = 0;
-    return "<h2 id=\"" HL[1] "." HL[2] " - " HTML(gensub( /\n.*$/, "", "g", block )) "\">" \
-           inline( gensub( /\n.*$/, "", "g", block ) ) \
-           "<a class=\"anchor\" href=\"#" HL[1] "." HL[2] " - " \
-           HTML(gensub( /\n.*$/, "", "g", block )) "\"></a></h2>\n\n" \
+    return headline(1, text, attrib) _block( substr( block, len + 1 ) );
+
+  # First Order Heading H1
+  } else if ( match( block, /^([^\n]+)\n===+(\n|$)/ ) ) {
+    len = RLENGTH; text = substr(block, 1, len);
+    sub(/\n===+(\n.*)?$/, "", text);
+
+    return headline(1, text, 0) _block( substr( block, len + 1 ) );
+
+  # Second Order Heading H2 + Attrib
+  } else if ( match( block, /^([^\n]+)([ \t]*\{([^\}\n]+)\})\n---+(\n|$)/ ) ) {
+    len = RLENGTH; text = attrib = block;
+    sub(/([ \t]*\{([^\}\n]+)\})\n---+(\n.*)?$/, "", text);
+    sub(/\}\n---+(\n.*)?$/, "", attrib); sub(/^([^\n]+)[ \t]*\{/, "", attrib);
+    gsub(/[^a-zA-Z0-9_-]+/, " ", attrib); gsub(/(^ | $)/, "", attrib);
+
+    return headline(2, text, attrib) _block( substr( block, len + 1) );
+
+  # Second Order Heading H2
+  } else if ( match( block, /^([^\n]+)\n---+(\n|$)/ ) ) {
+    len = RLENGTH; text = substr(block, 1, len);
+    sub(/\n---+(\n.*)?$/, "", text);
+
+    return headline(2, text, 0) _block( substr( block, len + 1) );
+
+  # Nth Order Heading H1 H2 H3 H4 H5 H6 + Attrib
+  } else if ( match( block, /^(#{1,6})[ \t]*(([^ \t\n]+|[ \t]+[^ \t\n#]|[ \t]+#+[ \t]*[^ \t\n#])+)[ \t]*#*([ \t]*\{([a-zA-Z \t-]*)\})(\n|$)/ ) ) {
+    len = RLENGTH; text = attrib = substr(block, 1, len);
+    match(block, /^#{1,6}/); n = RLENGTH;
+
+    sub(/^(#{1,6})[ \t]*/, "", text);   sub(/[ \t]*#*([ \t]*\{([a-zA-Z \t-]*)\})(\n.*)?$/, "", text);
+    sub(/^(#{1,6})[ \t]*(([^ \t\n]+|[ \t]+[^ \t\n#]|[ \t]+#+[ \t]*[^ \t\n#])+)[ \t]*#*[ \t]*\{/, "", attrib);
+    sub(/\})(\n.*)?$/, "", attrib);
+    gsub(/[^a-zA-Z0-9_-]+/, " ", attrib); gsub(/(^ | $)/, "", attrib);
+
+    return headline( n, text, attrib ) _block( substr( block, len + 1) );
+
+  # Nth Order Heading H1 H2 H3 H4 H5 H6
+  } else if ( match( block, /^(#{1,6})[ \t]*(([^ \t\n]+|[ \t]+[^ \t\n#]|[ \t]+#+[ \t]*[^ \t\n#])+)[ \t]*#*(\n|$)/ ) ) {
+    len = RLENGTH; text = substr(block, 1, len);
+    match(block, /^#{1,6}/); n = RLENGTH;
+    sub(/^(#{1,6})[ \t]*/, "", text); sub(/[ \t]*#*(\n.*)?$/, "", text);
+
+    return headline( n, text, 0 ) _block( substr( block, len + 1) );
+
+  # block images (wrapped in <figure>)
+  } else if ( match(block, "^!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?(\n|$)") ) {
+    len = RLENGTH; text = href = title = attrib = substr( block, 1, len);
+
+    sub("^!\\[", "", text);
+    sub("\\]\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?(\n.*)?$", "", text);
+
+    sub("^!" lix "\\([\n\t ]*", "", href);
+    sub("([\n\t ]+" lit ")?[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?(\n.*)?$", "", href);
+
+    sub("^!" lix "\\([\n\t ]*" lid, "", title);
+    sub("[\n\t ]*\\)(\\{[a-zA-Z \t-]*\\})?(\n.*)?$", "", title);
+    sub("^[\n\t ]+", "", title);
+
+    sub("^!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\)", "", attrib);
+    sub("(\n.*)?$", "", attrib);
+    sub(/^\{[ \t]*/, "", attrib); sub(/[ \t]*\}$/, "", attrib); gsub(/[ \t]+/, " ", attrib);
+
+    if ( match(href, /^<.*>$/) ) { sub(/^</, "", href); sub(/>$/, "", href); }
+         if ( match(title, /^".*"$/) ) { sub(/^"/, "", title); sub(/"$/, "", title); }
+    else if ( match(title, /^'.*'$/) ) { sub(/^'/, "", title); sub(/'$/, "", title); }
+    else if ( match(title, /^\(.*\)$/) ) { sub(/^\(/, "", title); sub(/\)$/, "", title); }
+
+    gsub(/^[\t ]+$/, "", text); gsub(/\\/, "", href);
+
+    return "<figure data-src=\"" URL(href, 1) "\"" (attrib?" class=\"" HTML(attrib) "\"":"") ">" \
+           "<img src=\"" URL(href, 1) "\" alt=\"" HTML(text?text:title?title:href) "\"" \
+           (attrib?" class=\"" HTML(attrib) "\"":"") ">" \
+           (title?"<figcaption>" inline(title) "</figcaption>":"") \
+           "</figure>\n\n" \
            _block( substr( block, len + 1) );
 
-  # Nth Order Heading
-  } else if ( match( block, /^#{1,6}[ \t]*[^\n]+([ \t]*#*)(\n|$)/ ) ) {
+  # reference style images (block)
+  } else if ( match(line, /^!\[([^]]*)\] ?\[([^]]*)\](\n|$)/ ) ) {
     len = RLENGTH;
-    hlvl = length( gensub( /^(#{1,6}).*$/, "\\1", "g", block ) );
-    htxt = gensub(/^#{1,6}[ \t]*(([^ \t\n]+|[ \t]+[^ \t\n#]|[ \t]+#+[^\n#])+)([ \t]*#*)(\n.*)?$/, "\\1", 1, block);
-    HL[hlvl]++; for ( n = hlvl + 1; n < 7; n++) { HL[n] = 0;}
-    hid = HL[1]; for ( n = 2; n <= hlvl; n++) { hid = hid "." HL[n] ; }
-    return "<h" hlvl " id=\"" hid " - " HTML(htxt) "\">" inline( htxt ) \
-           "<a class=\"anchor\" href=\"#" hid "\"></a></h" hlvl ">\n\n" \
-           _block( substr( block, len + 1) );
+    text = gensub(/^!\[([^\n]*)\] ?\[([^\n]*)\](\n.*)?$/, "\\1", 1, block);
+      id = gensub(/^!\[([^\n]*)\] ?\[([^\n]*)\](\n.*)?$/, "\\2", 1, block);
+    if ( ! id ) id = text;
+    if ( rl_href[id] && rl_title[id] ) {
+      return "<figure data-src=\"" URL(rl_href[id], 1) "\">" \
+               "<img src=\"" URL(rl_href[id], 1) "\" alt=\"" HTML(text) "\">" \
+               "<figcaption>" inline(rl_title[id]) "</figcaption>" \
+             "</figure>\n\n" \
+             _block( substr( block, len + 1) );
+    } else if ( rl_href[id] ) {
+      return "<figure data-src=\"" URL(rl_href[id], 1) "\">" \
+               "<img src=\"" URL(rl_href[id], 1) "\" alt=\"" HTML(text) "\">" \
+             "</figure>\n\n" \
+             _block( substr( block, len + 1) );
+    } else {
+      return "<p>" HTML(substr(block, 1, len)) "</p>\n" _block( substr(block, len + 1) );
+    }
+
+  # Macros (standalone <<macro>> calls handled as block, so they are not wrapped in paragraph)
+  } else if ( match( block, /^<<(([^>]|>[^>])+)>>(\n|$)/ ) ) {
+    len = RLENGTH;
+    text = gensub(/^<<(([^>]|>[^>])+)>>(\n.*)?$/, "\\1", 1, block);
+    return "<code class=\"macro\">" HTML(text) "</code>" _block(substr(block, len + 1) );
+
+  # Definition list
+  } else if (match( block, "^(([ \t]*\n)*[^:\n \t][^\n]+\n" \
+                           "([ \t]*\n)* ? ? ?:[ \t][^\n]+(\n|$)" \
+                          "(([ \t]*\n)* ? ? ?:[ \t][^\n]+(\n|$)" \
+                           "|[^:\n \t][^\n]+(\n|$)" \
+                           "|( ? ? ?\t|  +)[^\n]+(\n|$)" \
+                           "|([ \t]*\n)+( ? ? ?\t|  +)[^\n]+(\n|$))*)+" \
+  )) {
+    list = substr( block, 1, RLENGTH); block = substr( block, RLENGTH + 1);
+    return "\n<dl>\n" _dlist( list ) "</dl>\n" _block( block );
+
+  # Unordered list types
+  } else if ( text = _startlist( block, "ul", "-",   "([+*•]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) {
+    return text;
+  } else if ( text = _startlist( block, "ul", "\\+", "([-*•]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) {
+    return text;
+  } else if ( text = _startlist( block, "ul", "\\*", "([-+•]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) {
+    return text;
+  } else if ( text = _startlist( block, "ul", "•", "([-+*]|[0-9]+\\.|#\\.|[0-9]+\\)|#\\))") ) {
+    return text;
+
+  # Ordered list types
+  } else if ( text = _startlist( block, "ol", "[0-9]+\\.", "([-+*•]|#\\.|[0-9]+\\)|#\\))") ) {
+    return text;
+  } else if ( text = _startlist( block, "ol", "[0-9]+\\)", "([-+*•]|[0-9]+\\.|#\\.|#\\))") ) {
+    return text;
+  } else if ( text = _startlist( block, "ol", "#\\.", "([-+*•]|[0-9]+\\.|[0-9]+\\)|#\\))") ) {
+    return text;
+  } else if ( text = _startlist( block, "ol", "#\\)", "([-+*•]|[0-9]+\\.|#\\.|[0-9]+\\))") ) {
+    return text;
 
   # Split paragraphs
   } else if ( match( block, /(^|\n)[[:space:]]*(\n|$)/) ) {
@@ -539,7 +737,7 @@ function _block( block, LOCAL, st, len, hlvl, htxt, guard, code, indent, attrib
   # Horizontal rule
   } else if ( match( block, /(^|\n) ? ? ?((\* *){3,}|(- *){3,}|(_ *){3,})($|\n)/) ) {
     len = RLENGTH; st = RSTART;
-    return _block(substr(block, 1, st - 1)) "<hr />\n" _block(substr(block, st + len));
+    return _block(substr(block, 1, st - 1)) "<hr>\n" _block(substr(block, st + len));
 
   # Plain paragraph
   } else {
@@ -547,52 +745,78 @@ function _block( block, LOCAL, st, len, hlvl, htxt, guard, code, indent, attrib
   }
 }
 
-function _list( block, last, LOCAL, p) {
-  if ( ! length(block) ) return "";
-  gsub(/^([-+*]|[0-9]+\.|#\.)(  ? ? ?|\t)/, "", block)
+function _startlist(block, type, mark, exclude, LOCAL, st, len, list, indent, text) {
+  if (match( block, "(^|\n) ? ? ?" mark "[ \t][^\n]+(\n|$)" \
+                                   "(([ \t]*\n)* ? ? ?" mark "[ \t][^\n]+(\n|$)" \
+                                   "|([ \t]*\n)*( ? ? ?\t|  +)[^\n]+(\n|$)" \
+                                   "|[^\n \t][^\n]+(\n|$))*" ) ) {
+    st = RSTART; len = RLENGTH; list = substr( block, st, len);
+
+    sub("^\n", "", list); match(list, "^ ? ? ?"); indent = RLENGTH;
+    gsub( "(^|\n) {0," indent "}", "\n", list); sub("^\n", "", list);
+
+    text = substr(block, 1, st - 1); block = substr(block, st + len);
+    if (match(text, /\n[[:space:]]*\n/)) return 0;
+    if (match(text, "(^|\n) ? ? ?" exclude "[ \t][^\n]+")) return 0;
+    if (match( list, "\n" exclude "[ \t]" )) {
+      block = substr(list, RSTART + 1) block;
+      list = substr(list, 1, RSTART);
+    }
 
-  # slice next list item from input
-  if ( match( block, /\n([-+*]|[0-9]+\.|#\.)[ \t]+[^\n]+/) ) {
-    p = substr( block, 1, RSTART);
-    block = substr( block, RSTART + 1);
-  } else {
-    p = block; block = "";
-  }
-  sub( /\n +([-+*]|[0-9]+\.|#\.)/, "\n&", p );
+    return _block( text ) "<" type ">\n" _list( list, mark ) "</" type ">\n" _block( block );
+  } else return 0;
+}
 
-  # if this should be a paragraph item
-  # either previous item (last) or current item (p) contains blank lines
-  if (match(last, /\n[[:space:]]*\n/) || match(p, /\n[[:space:]]*\n/) ) {
-    last = p; p = _block(p);
-  } else {
-    last = p; p = _block(p);
-    sub( /^<p>/, "", p );
-    sub( /<\/p>\n/, "", p );
+function _list (block, mark, p, LOCAL, len, st, text, indent, task) {
+  if ( match(block, "^([ \t]*\n)*$")) return;
+
+  match(block, "^" mark "[ \t]"); indent = RLENGTH;
+  sub("^" mark "[ \t]", "", block);
+
+  if (match(block, /\n[ \t]*\n/)) p = 1;
+
+  match( block, "\n" mark "[ \t][^\n]+(\n|$)" );
+  st = (RLENGTH == -1) ? length(block) + 1 : RSTART;
+  text = substr(block, 1, st); block = substr(block, st + 1);
+
+  gsub("\n {0," indent "}", "\n", text);
+
+  task = match( text, /^\[ \]/   ) ? "<li class=\"task pending\"><input type=checkbox disabled>"      : \
+         match( text, /^\[-\]/   ) ? "<li class=\"task negative\"><input type=checkbox disabled>"     : \
+         match( text, /^\[\/\]/  ) ? "<li class=\"task partial\"><input type=checkbox disabled>"      : \
+         match( text, /^\[\?\]/  ) ? "<li class=\"task unsure\"><input type=checkbox disabled>"       : \
+         match( text, /^\[[xX]\]/) ? "<li class=\"task done\"><input type=checkbox disabled checked>" : "<li>";
+  sub(/^\[[-? \/xX]\]/, "", text);
+
+  text = _nblock( text );
+  if ( ! p && match( text, "^<p>(</p[^>]|</[^p]|<[^/]|[^<])*</p>\n$" ))
+     gsub( "(^<p>|</p>\n$)", "", text);
+
+  return task text "</li>\n" _list(block, mark, p);
+}
+
+function _dlist (block, LOCAL, len, st, text, indent, p) {
+  if (match( block, "^([ \t]*\n)*[^:\n \t][^\n]+\n" )) {
+    len = RLENGTH; text = substr(block, 1, len);
+    gsub( "(^\n*|\n*$)", "", text );
+    return "<dt>" inline( text ) "</dt>\n" _dlist( substr(block, len + 1) );
+  } else if (match( block, "^([ \t]*\n)* ? ? ?:[ \t][^\n]+(\n|$)" \
+                         "([^:\n \t][^\n]+(\n|$)" \
+                         "|( ? ? ?\t|  +)[^\n]+(\n|$)" \
+                         "|([ \t]*\n)+( ? ? ?\t|  +)[^\n]+(\n|$))*" \
+  )) {
+    len = RLENGTH; text = substr(block, 1, len);
+    sub( "^([ \t]*\n)*", "", text);
+    match(text, "^ ? ? ?:(\t| +)"); indent = RLENGTH;
+    sub( "^ ? ? ?:(\t| +)", "", text);
+    gsub( "(^|\n) {0," indent "}", "\n", text );
+
+    text = _nblock(text);
+    if (match( text, "^<p>(</p[^>]|</[^p]|<[^/]|[^<])*</p>\n$" ))
+       gsub( "(^<p>|</p>\n$)", "", text);
+
+    return "<dd>" text "</dd>\n" _dlist( substr(block, len + 1) );
   }
-  sub( /\n$/, "", p );
-
-  # Task List (pandoc, custom)
-         if ( p ~ /^\[ \].*/ )       { return "<li class=\"task pending\"><input type=checkbox disabled />" \
-                                              substr(p, 4) "</li>\n" _list( block, last );
-  } else if ( p ~ /^\[-\].*/ )       { return "<li class=\"task negative\"><input type=checkbox disabled />" \
-                                              substr(p, 4) "</li>\n" _list( block, last );
-  } else if ( p ~ /^\[\?\].*/ )      { return "<li class=\"task unsure\"><input type=checkbox disabled />" \
-                                              substr(p, 4) "</li>\n" _list( block, last );
-  } else if ( p ~ /^\[\/\].*/ )      { return "<li class=\"task partial\"><input type=checkbox disabled />" \
-                                              substr(p, 4) "</li>\n" _list( block, last );
-  } else if ( p ~ /^\[[xX]\].*/ )    { return "<li class=\"task done\"><input type=checkbox disabled checked />" \
-                                            substr(p, 4) "</li>\n" _list( block, last );
-  } else if ( p ~ /^<p>\[ \].*/ )    { return "<li class=\"task pending\"><p><input type=checkbox disabled />" \
-                                              substr(p, 7) "</li>\n" _list( block, last );
-  } else if ( p ~ /^<p>\[-\].*/ )    { return "<li class=\"task negative\"><p><input type=checkbox disabled />" \
-                                              substr(p, 7) "</li>\n" _list( block, last );
-  } else if ( p ~ /^<p>\[\?\].*/ )   { return "<li class=\"task unsure\"><p><input type=checkbox disabled />" \
-                                              substr(p, 7) "</li>\n" _list( block, last );
-  } else if ( p ~ /^<p>\[\/\].*/ )   { return "<li class=\"task partial\"><p><input type=checkbox disabled />" \
-                                              substr(p, 7) "</li>\n" _list( block, last );
-  } else if ( p ~ /^<p>\[[xX]\].*/ ) { return "<li class=\"task done\"><p><input type=checkbox disabled checked />" \
-                                              substr(p, 7) "</li>\n" _list( block, last );
-  } else { return "<li>" p "</li>\n" _list( block, last ); }
 }
 
 BEGIN {
@@ -600,6 +824,21 @@ BEGIN {
   file = ""; rl_href[""] = ""; rl_title[""] = "";
   if (ENVIRON["MD_HTML"] == "true") { AllowHTML = "true"; }
   HL[1] = 0; HL[2] = 0; HL[3] = 0; HL[4] = 0; HL[5] = 0; HL[6] = 0;
+  # hls = "0 0 0 0 0 0";
+
+  # Universal Patterns
+  nu = "(\\\\\\\\|\\\\[^\\\\]|[^\\\\_]|_[[:alnum:]])*"    # not underline (except when escaped)
+  na = "(\\\\\\\\|\\\\[^\\\\]|[^\\\\\\*])*"  # not asterisk (except when escaped)
+  ieu =  "_([^_[:space:]]|[^_[:space:]]" nu "[^_[:space:]])_"                 # inner <em> (underline)
+  isu = "__([^_[:space:]]|[^_[:space:]]" nu "[^_[:space:]])__"                # inner <strong> (underline)
+  iea =    "\\*([^\\*[:space:]]|[^\\*[:space:]]" na "[^\\*[:space:]])\\*"     # inner <em> (asterisk)
+  isa = "\\*\\*([^\\*[:space:]]|[^\\*[:space:]]" na "[^\\*[:space:]])\\*\\*"  # inner <strong> (asterisk)
+
+  lix="\\[(\\\\[^\n]|[^]\n\\\\[])*\\]"  # link text
+  lid="(<(\\\\[^\n]|[^\n<>\\\\])*>|(\\\\.|[^()\"'\\\\])+|([^<\n\t ()\\\\]|\\\\[^\n])(\\\\[\n]|[^\n\t \\(\\)\\\\])*)"  # link dest
+  lit="(\"(\\\\.|[^\"\\\\])*\"|'(\\\\.|[^'\\\\])*'|\\((\\\\.|[^\\(\\)\\\\])*\\))"  # link text
+  # link text with image def
+  lii="\\[(\\\\[^\n]|[^]\n\\\\[])*(!" lix "\\([\n\t ]*" lid "([\n\t ]+" lit ")?[\n\t ]*\\))?(\\\\[^\n]|[^]\n\\\\[])*\\]"
 
   # Buffering of full file ist necessary, e.g. to find reference links
   while (getline) { file = file $0 "\n"; }
@@ -623,5 +862,5 @@ BEGIN {
   # for (n in rl_href) { debug(n " | " rl_href[n] " | " rl_title[n] ); }
 
   # Run Block Processing -> The Actual Markdown!
-  printf "%s", _block( file );
+  printf "%s", _nblock( file );
 }
diff --git a/cgilite/session.sh b/cgilite/session.sh
index 1f4699e..c3a44e8 100755
--- a/cgilite/session.sh
+++ b/cgilite/session.sh
@@ -1,9 +1,23 @@
 #!/bin/sh
 
+# Copyright 2018 - 2022 Paul Hänsch
+# 
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+# 
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
 [ -n "$include_session" ] && return 0
 include_session="$0"
 
-_DATE="$(date +%s)"
+export _DATE="$(date +%s)"
 SESSION_TIMEOUT="${SESSION_TIMEOUT:-7200}"
 
 if ! which uuencode >/dev/null; then
diff --git a/cgilite/storage.sh b/cgilite/storage.sh
index 22e6acc..17ea0d0 100755
--- a/cgilite/storage.sh
+++ b/cgilite/storage.sh
@@ -1,21 +1,18 @@
 #!/bin/sh
 
-# Copyright 2018, 2019, 2021 Paul Hänsch
-#
-# This is a file format helper, part of CGIlite.
+# Copyright 2018 - 2021 Paul Hänsch
 # 
-# CGIlite is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
 # 
-# CGIlite is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU Affero General Public License for more details.
-# 
-# You should have received a copy of the GNU Affero General Public License
-# along with CGIlite.  If not, see <http://www.gnu.org/licenses/>. 
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 [ -n "$include_storage" ] && return 0
 include_storage="$0"
diff --git a/cgilite/users.sh b/cgilite/users.sh
index 6a6833e..d738ee9 100755
--- a/cgilite/users.sh
+++ b/cgilite/users.sh
@@ -1,5 +1,19 @@
 #!/bin/sh
 
+# Copyright 2021 - 2023 Paul Hänsch
+# 
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+# 
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
 [ -n "$include_users" ] && return 0
 include_users="$0"
 
@@ -36,6 +50,10 @@ LOCAL_USER='local \
   USER_EXPIRE USER_DEVICES USER_FUTUREUSE
 '
 
+# == TRANSLATIONS ==
+# override all functions marked with "TRANSLATION"
+# sed -n '/TRANSLATION$/,/^}/p;' <cgilite/users.sh
+
 unset USER_IDMAP
 eval "$UNSET_USER"
 
@@ -218,6 +236,30 @@ user_pwhash(){
   printf '%s\n' "${hash%% *}"
 }
 
+user_register_email() {  # TRANSLATION
+  "$SENDMAIL" -t -f "$MAILFROM" <<-EOF
+	From: ${MAILFROM}
+	To: ${email}
+	Subject: Your account registration at ${HTTP_HOST%:*}
+
+	Someone tried to sign up for a user account using this email address.
+
+	You can activate your account using this link:
+
+	    ${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")
+
+	This registration link will expire after $((USER_CONFIRMEXPIRE / 3600)) hours.
+
+	If you did not request an account at ${HTTP_HOST%:*}, then someone else
+	probably entered your email address by accident. In this case you shoud
+	simply ignore this message and we will remove your email address from
+	our database within the next day.
+
+	This is an automatic email. Any direct reply will not be received.
+	Your Account Registration Robot.
+	EOF
+}
+
 user_register(){
   # reserve account, send registration mail
   # preliminary uid, expiration, signature
@@ -239,27 +281,7 @@ user_register(){
     elif new_user "$uid" status=pending email="$email" expire="$((_DATE + USER_CONFIRMEXPIRE))"; then
       debug "Sending Activation Link:" \
             "${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")"
-      "$SENDMAIL" -t -f "$MAILFROM" <<-EOF
-	From: ${MAILFROM}
-	To: ${email}
-	Subject: Your account registration at ${HTTP_HOST%:*}
-
-	Someone tried to sign up for a user account using this email address.
-
-	You can activate your account using this link:
-
-	    ${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")
-
-	This registration link will expire after $((USER_CONFIRMEXPIRE / 3600)) hours.
-
-	If you did not request an account at ${HTTP_HOST%:*}, then someone else
-	probably entered your email address by accident. In this case you shoud
-	simply ignore this message and we will remove your email address from
-	our database within the next day.
-
-	This is an automatic email. Any direct reply will not be received.
-	Your Account Registration Robot.
-	EOF
+      user_register_email
       REDIRECT "${_BASE}${PATH_INFO}#USER_REGISTER_CONFIRM"
     else
       REDIRECT "${_BASE}${PATH_INFO}#ERROR_USER_NOLOCK"
@@ -289,19 +311,8 @@ user_register(){
   fi
 }
 
-user_invite(){
-  local uid="$(timeid)"
-  local email="$(POST email |user_checkemail)"
-  local message="$(POST message)"
-
-  if [ ! "email" ]; then
-    REDIRECT "${_BASE}${PATH_INFO}#ERROR_EMAIL_INVALID"
-  elif user_emailexist "$email"; then
-    REDIRECT "${_BASE}${PATH_INFO}#ERROR_EMAIL_EXISTS"
-  elif new_user "$uid" status=pending email="$email" expire="$((_DATE + USER_CONFIRMEXPIRE))"; then
-    debug "Sending Invitation Link:" \
-          "${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")"
-    "$SENDMAIL" -t -f "$MAILFROM" <<-EOF
+user_invite_email(){  # TRANSLATION
+  "$SENDMAIL" -t -f "$MAILFROM" <<-EOF
 	From: ${MAILFROM}
 	To: ${email}
 	Subject: You have been invited to ${HTTP_HOST%:*}
@@ -324,6 +335,21 @@ user_invite(){
 	This is an automatic email. Any direct reply will not be received.
 	Your Account Registration Robot.
 	EOF
+}
+
+user_invite(){
+  local uid="$(timeid)"
+  local email="$(POST email |user_checkemail)"
+  local message="$(POST message)"
+
+  if [ ! "email" ]; then
+    REDIRECT "${_BASE}${PATH_INFO}#ERROR_EMAIL_INVALID"
+  elif user_emailexist "$email"; then
+    REDIRECT "${_BASE}${PATH_INFO}#ERROR_EMAIL_EXISTS"
+  elif new_user "$uid" status=pending email="$email" expire="$((_DATE + USER_CONFIRMEXPIRE))"; then
+    debug "Sending Invitation Link:" \
+          "${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")"
+    user_invite_email
     REDIRECT "${_BASE}${PATH_INFO}#USER_REGISTER_CONFIRM"
   else
     REDIRECT "${_BASE}${PATH_INFO}#ERROR_USER_NOLOCK"
@@ -474,17 +500,15 @@ w_user_update(){
   fi
 }
 
-w_user_register(){
-  if [ "$(GET user_confirm)" ]; then
-    w_user_confirm
-  elif [ "$USER_REGISTRATION" != true -a -s "$user_db" ]; then
-    cat <<-EOF
+w_user_register_disabled(){  # TRANSLATION
+  cat <<-EOF
 	[div #user_register .disabled
 	User Registration is disabled.
 	]
 	EOF
-  elif [ "$USER_REQUIREEMAIL" = true ]; then
-    cat <<-EOF
+}
+w_user_register_sendmail(){  # TRANSLATION
+  cat <<-EOF
 	[form #user_register .registeremail method=POST
 	  [p We will send an activation mail to your email address.
 	    You can continue the signup process when you click on the
@@ -493,8 +517,9 @@ w_user_register(){
 	  [submit "action" "user_register" Sign Up]
 	]
 	EOF
-  elif [ "$USER_REQUIREEMAIL" != true ]; then
-    cat <<-EOF
+}
+w_user_register_direct(){  # TRANSLATION
+  cat <<-EOF
 	[form #user_register .registername method=POST
           [input name=uname placeholder="Choose Username" tooltip="Your username may contain any character but the @ sign. It must be at least 3 characters long, and it must start with a letter." pattern="^\[\\\\p{L}\]\[\\\\p{L}0-9 -~\]{2,127}$" autocomplete=off]
 	  [input type=password name=pw placeholder="Choose Passphrase" pattern=".{6,}"]
@@ -502,20 +527,22 @@ w_user_register(){
 	  [submit "action" "user_register" Sign Up]
 	]
 	EOF
-  fi
 }
 
-w_user_confirm(){
-  local UID_	UNAME	STATUS	EMAIL	PWSALT	PWHASH	EXPIRE	DEVICES FUTUREUSE
-  local user_confirm="$(GET user_confirm)"
-  local uid="${user_confirm% *}" signature="${user_confirm#* }"
+w_user_register(){
+  if [ "$(GET user_confirm)" ]; then
+    w_user_confirm
+  elif [ "$USER_REGISTRATION" != true -a -s "$user_db" ]; then
+    w_user_register_disabled
+  elif [ "$USER_REQUIREEMAIL" = true ]; then
+    w_user_register_sendmail
+  elif [ "$USER_REQUIREEMAIL" != true ]; then
+    w_user_register_direct
+  fi
+}
 
-  if [ "$signature" = "$(session_mac "$uid")" ]; then
-    read -r UID_	UNAME	STATUS	EMAIL	PWSALT	PWHASH	EXPIRE	DEVICES FUTUREUSE <<-EOF
-	$(grep "^${uid}	" "$user_db")
-	EOF
-    if [ "$STATUS" = pending -a "$EXPIRE" -gt "$_DATE" ]; then
-      cat <<-EOF
+w_user_confirm_proceed(){  # TRANSLATION
+  cat <<-EOF
 	[form #user_confirm method=POST
 	  [input type=hidden name=uid value="${uid}"]
 	  [input type=hidden name=signature value="${signature}"]
@@ -528,41 +555,52 @@ w_user_confirm(){
 	  [submit "action" "user_confirm" Finish Registration]
 	]
 	EOF
-    else
-      cat <<-EOF
+}
+w_user_confirm_expired(){  # TRANSLATION
+  cat <<-EOF
 	[div #user_confirm .expired
 	  [p This activation link is not valid anymore.]
 	]
 	EOF
-    fi
-  else
-    cat <<-EOF
+}
+w_user_confirm_invalid(){  # TRANSLATION
+  cat <<-EOF
 	[div #user_confirm .invalid
 	  [p This activation link is invalid. Make sure you copied the whole activation link from your email and be careful not to include any line breaks.]
 	]
 	EOF
-  fi
 }
 
-w_user_invite(){
-  local uid invlink
+w_user_confirm(){
+  local UID_	UNAME	STATUS	EMAIL	PWSALT	PWHASH	EXPIRE	DEVICES FUTUREUSE
+  local user_confirm="$(GET user_confirm)"
+  local uid="${user_confirm% *}" signature="${user_confirm#* }"
 
-  if [ "$(GET user_confirm)" ]; then
-    w_user_confirm
-  elif [ "$USER_ID" -a "$SENDMAIL" ]; then
-    cat <<-EOF
+  if [ "$signature" = "$(session_mac "$uid")" ]; then
+    read -r UID_	UNAME	STATUS	EMAIL	PWSALT	PWHASH	EXPIRE	DEVICES FUTUREUSE <<-EOF
+	$(grep "^${uid}	" "$user_db")
+	EOF
+    if [ "$STATUS" = pending -a "$EXPIRE" -gt "$_DATE" ]; then
+      w_user_confirm_proceed
+    else
+      w_user_confirm_expired
+    fi
+  else
+    w_user_confirm_invalid
+  fi
+}
+
+w_user_invite_email(){  # TRANSLATION
+  cat <<-EOF
 	[form #user_invite method=POST
 	  [input placeholder="Email Recipient" name=email autocomplete=off]
 	  [textarea name="message" placeholder="Message to recipient" . ]
 	  [submit "action" "user_invite" Send Invitation]
 	]
 	EOF
-  elif [ "$USER_ID" ]; then
-    uid="$(timeid)"
-    new_user "$uid" status=pending expire="$((_DATE + USER_CONFIRMEXPIRE))"
-    invlink="${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")"
-    debug "New Invitation Link: $invlink"
-    cat <<-EOF
+}
+w_user_invite_link(){  # TRANSLATION
+  cat <<-EOF
 	[div #user_invite .link
           [p An anonymous user account has been set up. Send the following link to the intended user, so they may claim their account. The link will remain valid for $((USER_CONFIRMEXPIRE / 3600)) hours.]
           [a href="$(HTML "$invlink")" . $(HTML "$invlink")]
@@ -570,30 +608,55 @@ w_user_invite(){
           [p [a href="#" . Set up another account]]
 	]
 	EOF
-  else
-    cat <<-EOF
+}
+w_user_invite_deny(){  # TRANSLATION
+  cat <<-EOF
 	[div #user_invite .notallowed
 	  Only registered users may send an invitation to another user.
 	]
 	EOF
+}
+
+w_user_invite(){
+  local uid invlink
+
+  if [ "$(GET user_confirm)" ]; then
+    w_user_confirm
+  elif [ "$USER_ID" -a "$SENDMAIL" ]; then
+    w_user_invite_email
+  elif [ "$USER_ID" ]; then
+    uid="$(timeid)"
+    new_user "$uid" status=pending expire="$((_DATE + USER_CONFIRMEXPIRE))"
+    invlink="${SCHEMA}://${HTTP_HOST}${_BASE}${PATH_INFO}?user_confirm=${uid}+$(session_mac "$uid")"
+    debug "New Invitation Link: $invlink"
+    w_user_invite_link
+  else
+    w_user_invite_deny
   fi
 }
 
-w_user_login(){
-  if [ ! "$USER_ID" ]; then
-    cat <<-EOF
+w_user_login_logon(){  # TRANSLATION
+  cat <<-EOF
 	[form #user_login .login method=POST
 	  [input name=uname placeholder="Username or Email" autocomplete=off]
 	  [input type=password name=pw placeholder="Passphrase"]
 	  [submit "action" "user_login" Login]
 	]
 	EOF
-  elif [ "$USER_ID" ]; then
-    cat <<-EOF
+}
+w_user_login_logoff(){  # TRANSLATION
+  cat <<-EOF
 	[form #user_login .logout method=POST
 	  [p Logged in as [span . $(HTML ${USER_NAME})]]
 	  [submit "action" "user_logout" Logout]
 	]
 	EOF
+}
+
+w_user_login(){
+  if [ ! "$USER_ID" ]; then
+    w_user_login_logon
+  elif [ "$USER_ID" ]; then
+    w_user_login_logoff
   fi
 }