Syntax: Stricter typeface and fix preCode (alias inline) nested in bold

Fix: Syntax bug precode nested in bold apperead bold

Problem:
1. `that_ HERE _was` italic
2. `__that ``HERE`` was__  bold => PreCode should not receive typeface
region changes

Solution:
1. Stricter regex (and add \* to VimwikiError)
2. Add VikiError and WikiPre to nestables syntaxes

autoload/vimwiki/emoji.vim

@@ -1768,7 +1768,6 @@ endfunction
 
 " Conceal
 function! vimwiki#emoji#apply_conceal() abort
-  syn iskeyword 0-9,a-z,A-Z,:-:
   for [name, emoji] in items(s:emoji_single)
     exe 'syn keyword VimwikiEmoji :' . name . ': conceal cchar=' . emoji
   endfor

autoload/vimwiki/u.vim

@@ -273,11 +273,11 @@ endfunction
 " Helper: Expand regex from reduced typeface delimiters
 " :param: list<list,delimiters>> with reduced regex
 " Return: list with extended regex delimiters (not inside a word)
-"   -- [['\*_', '_\*']] -> [['\*_\S\@=', '\S\@<=_\*']]
+"   -- [['\*_', '_\*']] -> [['\*_\S\@=', '\S\@<=_\*\%(\s\|$\)\@=']]
 function! vimwiki#u#hi_expand_regex(lst) abort
   let res = []
   for delimiters in a:lst
-    call add(res, [delimiters[0] . '\S\@=', '\S\@<=' . delimiters[1]])
+    call add(res, [delimiters[0] . '\S\@=', '\S\@<=' . delimiters[1] . '\%(\s\|\n\)\@='])
   endfor
   return res
 endfunction
@@ -400,5 +400,5 @@ function! vimwiki#u#hi_typeface(dic) abort
 
   " Prevent var_with_underscore to trigger italic text
   " -- See $VIMRUNTIME/syntax/markdown.vim
-  syn match VimwikiError "\w\@<=_\w\@="
+  syn match VimwikiError "\w\@<=[_*]\w\@="
 endfunction

syntax/vimwiki.vim

@@ -25,7 +25,7 @@ let syntax_dic = g:vimwiki_syntax_variables[s:current_syntax]
 
 " Declare nesting capabilities
 " -- to be embeded in standard: bold, italic, underline
-let syntax_dic.nested_extended = 'VimwikiCode,VimwikiEqIn,VimwikiSuperScript,VimwikiSubScript,textSnipTEX'
+let syntax_dic.nested_extended = 'VimwikiError,VimwikiPre,VimwikiCode,VimwikiEqIn,VimwikiSuperScript,VimwikiSubScript,textSnipTEX'
 " -- to be embeded in exetended (the one above)
 let syntax_dic.nested_typeface = 'VimwikiBold,VimwikiItalic,VimwikiUmderline,VimwikiDelText'
 let syntax_dic.nested = syntax_dic.nested_extended . ',' . syntax_dic.nested_typeface

test/list_move.vader

@@ -0,0 +1,45 @@
+# Move and edit a list (autocommand, config_
+
+# Test J {{{1
+############################################################
+
+Given vimwiki (Markdown * [ ] list {{{2):
+  * [ ] Top Level
+    * [o] Child 1
+    * [X] Child 2
+
+    * [X] Post space
+
+
+Execute (Set syntax markdown):
+  call SetSyntax('markdown')
+
+Do (JJJJ):
+  JJJJ
+  0y$
+  :call AssertIfVersion(704, '* [ ] Top Level Child 1 Child 2 Post space', @")\<Cr>
+
+
+
+Given vimwiki (Markdown * and - list {{{2):
+  * one
+  * two
+  - three
+  - for
+
+
+Execute (Set syntax markdown):
+  call SetSyntax('markdown')
+
+Do (JjJ):
+  JjJ
+  gg
+  0y$
+  :call AssertIfVersion(704, '* one two', @")\<Cr>
+  G
+  0y$
+  :call AssertIfVersion(704, '- three for', @")\<Cr>
+
+
+
+# vim: sw=2:foldlevel=30:foldmethod=indent:

test/syntax.vader

@@ -1,12 +1,59 @@
 # Syntax and Highlight
 
+#Given vimwiki (bold and pre):
 
 # 1 Typeface {{{1
 #################
 
+Given vimwiki (Markdown bad __this_not_it__ {{{2):
+  See here  14 |
+  s2n_error
+  s*n*er_r_
+  n4rmal_aaaaaaaaaaaaaaaaaaaa_text_
+  n5t_italiccccccccccccccccccccc_no
+  n6t_italiccccccccccccccccccccccno
+  n7t*italiccccccccccccccccccccc_no
+  n8t*italiccccccccccccccccccccc*no
+  __not_italicccccccccc_but_boldd__
+  _a_asdasda_asdas_asdas_asdasda_a_
+  _jitaliccccccccccccccccccccccccc_
+  n12ormalllllllllllllllllllllllll_
+  _italic if at end of file unfortunately
+  Note: The decision to start a region is only based on a matching start
+  pattern.  There is no check for a matching end pattern.  This does NOT
+  work: (:h syn-region)
+
+Execute (Set syntax markdown):
+  call SetSyntax('markdown')
+
+Execute (Assert Syntax extended types x 1):
+  AssertEqual 'VimwikiError2'     , SyntaxAt(2, 4) . 2
+  AssertEqual 'VimwikiError3'     , SyntaxAt(3, 4) . 3
+  AssertEqual '4'                 , SyntaxAt(4, 14) . 4
+  AssertEqual '5'                 , SyntaxAt(5, 14) . 5
+  AssertEqual '6'                 , SyntaxAt(6, 14) . 6
+  AssertEqual '7'                 , SyntaxAt(7, 14) . 7
+  AssertEqual '8'                 , SyntaxAt(8, 14) . 8
+  AssertEqual 'VimwikiBold9'      , SyntaxAt(9, 14) . 9
+  AssertEqual 'VimwikiItalic10'   , SyntaxAt(10, 14) . 10
+  AssertEqual 'VimwikiItalic11'   , SyntaxAt(11, 14) . 11
+  AssertEqual '12'                , SyntaxAt(12, 14) . 12
+
+Given vimwiki (bold and pre {{{2):
+  __startbold
+  ```
+  pre
+  ```
+  __endbold
+
+Execute (Set syntax markdown):
+  call SetSyntax('markdown')
+
+Execute (Assert Syntax extended types x 1):
+  AssertEqual 'VimwikiPre'        , SyntaxAt(3, 1)
+
 # Emphasis stricker {{{2
 # See: https://github.github.com/gfm/#emphasis-and-strong-emphasis
-
 Given vimwiki (Emphasis and not):
   this __bold__ ok
   this _italic_ ok
@@ -23,7 +70,6 @@ Execute (Assert Syntax extended types x 1):
   AssertEqual ''                   , SyntaxAt(4, 9)
 
 # With vimwiki_hl_cb_checked {{{2
-
 Given vimwiki (task list with code):
   Normal syntax
   - [X] Lorem __sit__  `sed do eiusmod
@@ -116,11 +162,11 @@ Execute (Assert Syntax extended types nested in extended):
   AssertEqual 'VimwikiSubScript'   , SyntaxAt(5, 23)
 
 Given vimwiki (Basic Types nested in extended):
-  From ^super t__bold          __ is crazy but^  morF
-  From ,,sub to _italic with en_  aaaaaaa,,      morF
+  From ^super  __bold          __ is crazy but^  morF
+  From ,,sub    _italic with en_  aaaaaaa,,      morF
   From $eq to  **boldboldboldbo** aaaaaaaaa         $
-  From ^super t *italic aaaaaaa*aaaaaaaaaaaaaaaaaaaaa
-  From ~~strike__bbbbbbbbbbbbb__ssssssssssssssssss~~
+  From ^super   *italic aaaaaaa*aaaaaaaaaaaaaaaaaaaaa
+  From ~~strik __bbbbbbbbbbbbb__ssssssssssssssssss~~
 
 Execute (Set syntax markdown):
   call SetSyntax('markdown')

test/vimrc

@@ -268,4 +268,10 @@
     return synIDattr(synIDtrans(l:s), 'name')
   endfun
 
+  " Run Assert only if vim version higth enough
+  function! AssertIfVersion(version, one, two)
+    if v:version < a:version | return | endif
+    AssertEqual a:one, a:two
+  endfunction
+
 " vim: ft=vim:sw=2