Feature: Markdown: Support SetExt Heading (Issue #209)

Like these
==========

See: https://spec.commonmark.org/0.29/#setext-headings

Note: work for follow_link and VimwikiTOC

test/command_toc.vader

@@ -10,7 +10,7 @@
 # -- 2. remove anything that is not a letter, number, space or hyphen (see the source for how Unicode is handled) => from 'bad characters'
 # -- 3. changes any space to a hyphen => OK: from previous big
 # -- 4. If that is not unique, add "-1", "-2", "-3",... to make it unique => TODO not implemented
-# 
+#
 #
 # TODO if link in heading
 #Given vimwiki (Two same heading {{{1):
@@ -29,6 +29,60 @@
 # Start {{{1
 
 
+Given vimwiki (Underline header (SetExt) (#209) {{{1):
+  First with spaces
+  =====
+
+  toto
+
+  Second
+  -------
+  toto
+
+  Third
+  -----
+  toto
+
+  Four
+  =====
+  toto
+  Last
+  ----
+
+Execute (Set syntax markdown && Set sw=8):
+  call SetSyntax('markdown')
+  set sw=8
+  VimwikiTOC
+
+Expect (Heading SetExt created):
+  # Contents
+
+  - [First with spaces](#first-with-spaces)
+          - [Second](#second)
+          - [Third](#third)
+  - [Four](#four)
+          - [Last](#last)
+
+  First with spaces
+  =====
+
+  toto
+
+  Second
+  -------
+  toto
+
+  Third
+  -----
+  toto
+
+  Four
+  =====
+  toto
+  Last
+  ----
+
+
 
 Given vimwiki (Two same heading (#968) {{{1):
   # One
@@ -69,10 +123,10 @@ Execute (Set syntax markdown && VimwikiTOC):
 
 Expect (Bad characters are removed):
   # Contents
-  
+
   - [One !@#@#(!%#&$^(!@](#one-)
           - [Two !!~!!:"@!>@!>?<](#two-)
-  
+
   # One !@#@#(!%#&$^(!@
   ## Two !!~!!:"@!>@!>?<
 

test/link_markdown_multiple_per_file.vader

@@ -1,8 +1,58 @@
 # Link internal to a file
 # See issue #666 for anchor support (then internal links)
+# Preambule set file onces and for all {{{1
+# Otherwise the bash script is freezing
+Given vimwiki (a):
+  a
 
+Execute (Set filename wiki_test.md):
+  file wiki_test.md
 
-# Link to anchor with spaces {{{!
+Expect (a):
+  a
+
+# Link to anchor in SetExt {{{1
+# Like that
+# -----
+# Issue: #209
+
+Given vimwiki (Anchor SetExt):
+  [jump](#frst-one)
+
+  F!rst    One
+  =========
+
+Execute (Set filename wiki_test.md):
+  call SetSyntax('markdown')
+
+Do (Enter link):
+  \<Cr>
+  A__HERE__\<Esc>
+
+Expect (Cursor jumped SetExt):
+  [jump](#frst-one)
+
+  F!rst    One__HERE__
+  =========
+
+Given vimwiki (Bad Anchor SetExt):
+  [jump](#frst-one)
+
+  F!rst    One
+
+Execute (Set filename wiki_test.md):
+  call SetSyntax('markdown')
+
+Do (Enter link):
+  \<Cr>
+  A__HERE__\<Esc>
+
+Expect (Cursor stayed (not jumped) SetExt):
+  [jump](#frst-one)__HERE__
+
+  F!rst    One
+
+# Link to anchor with spaces {{{1
 # PR #840
 # Issues: #831
 
@@ -10,12 +60,11 @@ Given vimwiki (Internal links zith spaces):
   [Any ! apparent name @#$](#basic-heading-many-spaces)
   One line here
 
-  ## Basic HeAding Many SpacES
+  ##    Basic  HeAding Many   SpacES
 
   One line here
 
 Execute (Set filename wiki_test.md):
-  file wiki_test.md
   call SetSyntax('markdown')
 
 Do (Enter link):
@@ -26,7 +75,7 @@ Expect (Cursor at heading position):
   [Any ! apparent name @#$](#basic-heading-many-spaces)
   One line here
 
-  ## Basic HeAding Many SpacES__HERE__
+  ##    Basic  HeAding Many   SpacES__HERE__
 
   One line here
 

test/syntax.vader

@@ -328,6 +328,20 @@ Execute (Assert Syntax link):
 
 # 3 Header {{{1
 ###############
+Given vimwiki (Markdown SetExt Headers):
+  One
+  ===
+  two
+  ---
+
+Execute (Set syntax markdown):
+  call SetSyntax('markdown')
+
+Execute (Assert Syntax Header SetExt):
+  AssertEqual 'VimwikiHeader1', SyntaxAt(1, 1)
+  AssertEqual 'VimwikiHeader1', SyntaxAt(2, 1)
+  AssertEqual 'VimwikiHeader2', SyntaxAt(3, 1)
+  AssertEqual 'VimwikiHeader2', SyntaxAt(4, 1)
 
 Given vimwiki (Wiki Headers):
   = Header level 1 =