Fix bug with double underscores

Double underscore inside doesn't make bold.
We also fix asterisk and bold italic.
Fix #267

diff --git a/syntax/markdown.vim b/syntax/markdown.vim
index d27145c8f2c780496609050c19cda329ac2dafe5..0dbf49a228f57284815fefee34984f550b9158dd 100644 (file)
--- a/syntax/markdown.vim
+++ b/syntax/markdown.vim
@@ -49,10 +49,10 @@ else
 endif
 execute 'syn region htmlItalic start="\%(^\|\s\)\zs\*\ze[^\\\*\t ]\%(\%([^*]\|\\\*\|\n\)*[^\\\*\t ]\)\?\*\_W" end="[^\\\*\t ]\zs\*\ze\_W" keepend' . s:oneline
 execute 'syn region htmlItalic start="\%(^\|\s\)\zs_\ze[^\\_\t ]" end="[^\\_\t ]\zs_\ze\_W" keepend' . s:oneline
-execute 'syn region htmlBold start="\*\*\ze\S" end="\S\zs\*\*" keepend' . s:oneline
-execute 'syn region htmlBold start="__\ze\S" end="\S\zs__" keepend' . s:oneline
-execute 'syn region htmlBoldItalic start="\*\*\*\ze\S" end="\S\zs\*\*\*" keepend' . s:oneline
-execute 'syn region htmlBoldItalic start="___\ze\S" end="\S\zs___" keepend' . s:oneline
+execute 'syn region htmlBold start="\%(^\|\s\)\*\*\ze\S" end="\S\zs\*\*" keepend' . s:oneline
+execute 'syn region htmlBold start="\%(^\|\s\)\zs__\ze\S" end="\S\zs__" keepend' . s:oneline
+execute 'syn region htmlBoldItalic start="\%(^\|\s\)\zs\*\*\*\ze\S" end="\S\zs\*\*\*" keepend' . s:oneline
+execute 'syn region htmlBoldItalic start="\%(^\|\s\)\zs___\ze\S" end="\S\zs___" keepend' . s:oneline
 
 " [link](URL) | [link][id] | [link][] | ![image](URL)
 syn region mkdFootnotes matchgroup=mkdDelimiter start="\[^"    end="\]"

diff --git a/test/syntax.vader b/test/syntax.vader
index 9559ee3fb4898018c69741205fb5b89bb8232822..e36c835774ad69eeaf5d119200f31c7636c0f8e3 100644 (file)
--- a/test/syntax.vader
+++ b/test/syntax.vader
@@ -154,6 +154,14 @@ Given markdown;
 Execute (not italic with an asterisk):
   AssertNotEqual SyntaxOf('a'), 'htmlItalic'
 
+Given markdown;
+[__](a) b
+
+Execute (not bold with double underscores):
+  AssertNotEqual SyntaxOf('_'), 'htmlBold'
+  AssertNotEqual SyntaxOf('a'), 'htmlBold'
+  AssertNotEqual SyntaxOf('b'), 'htmlBold'
+
 # Links
 
 Given markdown;