From: Paul Hänsch <paul@plutz.net>
Date: Mon, 5 Jul 2021 13:19:59 +0000 (+0200)
Subject: md: verbatim html block, md: allow emphasis before punctuation
X-Git-Url: https://git.plutz.net/?p=cgilite;a=commitdiff_plain;h=987f4ef7db8df774e437d36f199be7c2e1396584

md: verbatim html block, md: allow emphasis before punctuation
---

diff --git a/markdown.awk b/markdown.awk
index 98a3e8b..e652be1 100755
--- a/markdown.awk
+++ b/markdown.awk
@@ -24,6 +24,7 @@
 # - [x] Lists (ordered, unordered)
 # - [x] Code blocks (using indention)
 # - [x] Horizontal rules
+# - [x] Verbatim HTML block (gfm)
 #
 # Basic Markdown - Inline elements:
 # ---------------------------------
@@ -34,6 +35,7 @@
 # - [x] Images / reference style images
 # - [x] <automatic links>
 # - [x] backslash escapes
+# - [ ] Verbatim HTML inline
 #
 # Extensions - Block elements:
 # ----------------------------
@@ -197,7 +199,7 @@ function inline( line, LOCAL, len, code, href, guard ) {
     return "<strong>" inline( substr( line, 3, len - 4 ) ) "</strong>" inline( substr( line, len + 1 ) );
 
   #  __strong__
-  } else if ( match(line, "^__(([^_[:space:]]|" ieu ")|([^_[:space:]]|" ieu ")(" nu "|" ieu ")*([^_[:space:]]|" ieu "))__[[:space:]]") ) {
+  } else if ( match(line, "^__(([^_[:space:]]|" ieu ")|([^_[:space:]]|" ieu ")(" nu "|" ieu ")*([^_[:space:]]|" ieu "))__[[:space:][:punct:]]") ) {
     len = RLENGTH;
     return "<strong>" inline( substr( line, 3, len - 5 ) ) "</strong>" inline( substr( line, len) );
 
@@ -212,7 +214,7 @@ function inline( line, LOCAL, len, code, href, guard ) {
     return "<em>" inline( substr( line, 2, len - 2 ) ) "</em>" inline( substr( line, len + 1 ) );
 
   #  _em_
-  } else if ( match(line, "^_(([^_[:space:]]|" isu ")|([^_[:space:]]|" isu ")(" nu "|" isu ")*([^_[:space:]]|" isu "))_[[:space:]]") ) {
+  } else if ( match(line, "^_(([^_[:space:]]|" isu ")|([^_[:space:]]|" isu ")(" nu "|" isu ")*([^_[:space:]]|" isu "))_[[:space:][:punct:]]") ) {
     len = RLENGTH;
     return "<em>" inline( substr( line, 2, len - 3 ) ) "</em>" inline( substr( line, len ) );
 
@@ -233,6 +235,41 @@ function _block( block, LOCAL, st, len, hlvl, htxt, guard, code, indent ) {
   if ( block == "" ) {
     return "";
 
+  # HTML #2
+  } else if ( match( block, /(^|\n) ? ? ?<!--([^-]|-[^-]|--[^>])*(-->|$)/) ) {
+    len = RLENGTH; st = RSTART;
+    return _block(substr(block, 1, st - 1)) substr(block, st, len) _block(substr(block, st + len));
+
+  # HTML #3
+  } else if ( match( block, /(^|\n) ? ? ?<\?([^\?]|\?[^>])*(\?>|$)/) ) {
+    len = RLENGTH; st = RSTART;
+    return _block(substr(block, 1, st - 1)) substr(block, st, len) _block(substr(block, st + len));
+
+  # HTML #4
+  } else if ( match( block, /(^|\n) ? ? ?<![A-Z][^>]*(>|$)/) ) {
+    len = RLENGTH; st = RSTART;
+    return _block(substr(block, 1, st - 1)) substr(block, st, len) _block(substr(block, st + len));
+
+  # HTML #5
+  } else if ( match( block, /(^|\n) ? ? ?<!\[CDATA\[([^\]]|\][^\]]|\]\][^>])*(\]\]>|$)/) ) {
+    len = RLENGTH; st = RSTART;
+    return _block(substr(block, 1, st - 1)) substr(block, st, len) _block(substr(block, st + len));
+
+  # HTML #6
+  } else if ( match( tolower(block), /(^|\n) ? ? ?<\/?(address|article|aside|base|basefont|blockquote|body|caption|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption|figure|footer|form|frame|frameset|h[123456]|head|header|hr|html|iframe|legend|li|link|main|menu|menuitem|nav|noframes|ol|optgroup|option|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr|track|ul)([[:space:]\n>]|\/>)([^\n]|\n[ \t]*[^\n])*(\n[[:space:]]*\n|$)/) ) {
+    len = RLENGTH; st = RSTART;
+    return _block(substr(block, 1, st - 1)) substr(block, st, len) _block(substr(block, st + len));
+
+  # HTML #1
+  } else if ( match( tolower(block), /(^|\n) ? ? ?<(script|pre|style)([[:space:]\n>]).*(<\/script>|<\/pre>|<\/style>|$)/) ) {
+    len = RLENGTH; st = RSTART;
+    return _block(substr(block, 1, st - 1)) substr(block, st, len) _block(substr(block, st + len));
+
+  # HTML #7
+  } else if ( match( block, /^ ? ? ?(<\/[A-Za-z][A-Za-z0-9-]* \t]*>|<[A-Za-z][A-Za-z0-9-]*([ \t]+[A-Za-z_:][A-Za-z0-9_\.:-]*[ \t]*=[ \t]*([[:space:]"'=<>`]+|"[^"]*"|'[^']*'))*[ \t]*\/?>)([[:space:]]*\n).*(\n[[:space:]]*\n|$)/) ) {
+    len = RLENGTH; st = RSTART;
+    return substr(block, st, len) _block(substr(block, st + len));
+
   # Horizontal rule
   } else if ( match( block, /(^|\n) ? ? ?((\* *){3,}|(- *){3,}|(_ *){3,})($|\n)/) ) {
     len = RLENGTH; st = RSTART;